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|00000000| 00 08 48 46 49 45 4c 44 | 2e 43 00 00 00 00 00 00 |..HFIELD|.C......|
|00000010| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000050| 00 00 00 00 00 b4 da 00 | 00 01 ac a9 6f 76 6a a9 |........|....ovj.|
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|00000070| 00 00 00 00 00 00 00 00 | 00 00 81 81 48 9b 00 00 |........|....H...|
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|000000c0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 0d 2a 20 |********|*****.* |
|000000d0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
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|000000f0| 20 20 54 68 69 73 20 66 | 69 6c 65 20 69 6d 70 6c |  This f|ile impl|
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|000003d0| 2d 2d 0d 2a 20 20 4e 4f | 54 49 43 45 3a 20 54 68 |--.*  NO|TICE: Th|
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|00000430| 73 20 74 6f 20 50 4f 56 | 2d 52 61 79 20 61 6e 64 |s to POV|-Ray and|
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|000005e0| 20 46 6f 72 75 6d 2e 20 | 20 54 68 65 20 6c 61 74 | Forum. | The lat|
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|00000630| 72 61 6d 20 69 73 20 62 | 61 73 65 64 20 6f 6e 20 |ram is b|ased on |
|00000640| 74 68 65 20 70 6f 70 75 | 6c 61 72 20 44 4b 42 20 |the popu|lar DKB |
|00000650| 72 61 79 74 72 61 63 65 | 72 20 76 65 72 73 69 6f |raytrace|r versio|
|00000660| 6e 20 32 2e 31 32 2e 0d | 2a 20 44 4b 42 54 72 61 |n 2.12..|* DKBTra|
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|000006d0| 6b 20 26 20 41 61 72 6f | 6e 20 41 2e 20 43 6f 6c |k & Aaro|n A. Col|
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|00000730| 2a 2a 2a 2a 2a 2f 0d 0d | 23 69 6e 63 6c 75 64 65 |*****/..|#include|
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|00000750| 75 64 65 20 22 76 65 63 | 74 6f 72 2e 68 22 0d 23 |ude "vec|tor.h".#|
|00000760| 69 6e 63 6c 75 64 65 20 | 22 70 6f 76 70 72 6f 74 |include |"povprot|
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|00000780| 67 6e 28 78 29 20 28 28 | 28 78 29 20 3e 20 30 2e |gn(x) ((|(x) > 0.|
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|000007f0| 0d 23 65 6e 64 69 66 0d | 23 69 66 6e 64 65 66 20 |.#endif.|#ifndef |
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|00000820| 20 28 28 78 29 20 3c 20 | 28 79 29 20 3f 20 28 79 | ((x) < |(y) ? (y|
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|00000840| 0d 4d 45 54 48 4f 44 53 | 20 48 65 69 67 68 74 5f |.METHODS| Height_|
|00000850| 46 69 65 6c 64 5f 4d 65 | 74 68 6f 64 73 20 3d 20 |Field_Me|thods = |
|00000860| 0d 20 20 7b 0d 20 20 41 | 6c 6c 5f 48 65 69 67 68 |.  {.  A|ll_Heigh|
|00000870| 74 46 6c 64 5f 49 6e 74 | 65 72 73 65 63 74 69 6f |tFld_Int|ersectio|
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|00000930| 0d 7d 3b 0d 0d 4d 45 54 | 48 4f 44 53 20 43 73 67 |.};..MET|HODS Csg|
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|00000980| 20 20 49 6e 73 69 64 65 | 5f 48 65 69 67 68 74 46 |  Inside|_HeightF|
|00000990| 6c 64 2c 20 48 65 69 67 | 68 74 46 6c 64 5f 4e 6f |ld, Heig|htFld_No|
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|000009b0| 67 68 74 46 6c 64 2c 0d | 20 20 54 72 61 6e 73 6c |ghtFld,.|  Transl|
|000009c0| 61 74 65 5f 48 65 69 67 | 68 74 46 6c 64 2c 20 52 |ate_Heig|htFld, R|
|000009d0| 6f 74 61 74 65 5f 48 65 | 69 67 68 74 46 6c 64 2c |otate_He|ightFld,|
|000009e0| 0d 20 20 53 63 61 6c 65 | 5f 48 65 69 67 68 74 46 |.  Scale|_HeightF|
|000009f0| 6c 64 2c 20 54 72 61 6e | 73 66 6f 72 6d 5f 48 65 |ld, Tran|sform_He|
|00000a00| 69 67 68 74 46 6c 64 2c | 20 49 6e 76 65 72 74 5f |ightFld,| Invert_|
|00000a10| 48 65 69 67 68 74 46 6c | 64 2c 44 65 73 74 72 6f |HeightFl|d,Destro|
|00000a20| 79 5f 48 65 69 67 68 74 | 46 6c 64 0d 7d 3b 0d 0d |y_Height|Fld.};..|
|00000a30| 65 78 74 65 72 6e 20 6c | 6f 6e 67 20 52 61 79 5f |extern l|ong Ray_|
|00000a40| 48 74 5f 46 69 65 6c 64 | 5f 54 65 73 74 73 2c 20 |Ht_Field|_Tests, |
|00000a50| 52 61 79 5f 48 74 5f 46 | 69 65 6c 64 5f 54 65 73 |Ray_Ht_F|ield_Tes|
|00000a60| 74 73 5f 53 75 63 63 65 | 65 64 65 64 3b 0d 65 78 |ts_Succe|eded;.ex|
|00000a70| 74 65 72 6e 20 6c 6f 6e | 67 20 52 61 79 5f 48 74 |tern lon|g Ray_Ht|
|00000a80| 5f 46 69 65 6c 64 5f 42 | 6f 78 5f 54 65 73 74 73 |_Field_B|ox_Tests|
|00000a90| 2c 20 52 61 79 5f 48 46 | 69 65 6c 64 5f 42 6f 78 |, Ray_HF|ield_Box|
|00000aa0| 5f 54 65 73 74 73 5f 53 | 75 63 63 65 65 64 65 64 |_Tests_S|ucceeded|
|00000ab0| 3b 0d 65 78 74 65 72 6e | 20 69 6e 74 20 4f 70 74 |;.extern| int Opt|
|00000ac0| 69 6f 6e 73 3b 0d 0d 69 | 6e 74 20 69 73 64 78 2c |ions;..i|nt isdx,|
|00000ad0| 20 69 73 64 7a 2c 20 58 | 5f 44 6f 6d 3b 0d 44 42 | isdz, X|_Dom;.DB|
|00000ae0| 4c 20 47 64 78 2c 20 47 | 64 79 2c 20 47 64 7a 2c |L Gdx, G|dy, Gdz,|
|00000af0| 20 42 6c 6f 63 6b 5f 53 | 69 7a 65 2c 20 49 6e 76 | Block_S|ize, Inv|
|00000b00| 5f 42 6c 6b 5f 53 69 7a | 65 3b 0d 44 42 4c 20 4d |_Blk_Siz|e;.DBL M|
|00000b10| 79 78 2c 20 4d 78 7a 2c | 20 4d 7a 78 2c 20 4d 79 |yx, Mxz,| Mzx, My|
|00000b20| 7a 3b 0d 49 53 54 41 43 | 4b 20 2a 48 66 5f 53 74 |z;.ISTAC|K *Hf_St|
|00000b30| 61 63 6b 3b 0d 52 41 59 | 20 2a 52 52 61 79 3b 0d |ack;.RAY| *RRay;.|
|00000b40| 44 42 4c 20 6d 69 6e 64 | 69 73 74 2c 20 6d 61 78 |DBL mind|ist, max|
|00000b50| 64 69 73 74 3b 0d 0d 23 | 64 65 66 69 6e 65 20 47 |dist;..#|define G|
|00000b60| 65 74 5f 48 65 69 67 68 | 74 28 78 2c 20 7a 2c 20 |et_Heigh|t(x, z, |
|00000b70| 48 5f 46 69 65 6c 64 29 | 20 28 28 44 42 4c 29 28 |H_Field)| ((DBL)(|
|00000b80| 48 5f 46 69 65 6c 64 29 | 2d 3e 4d 61 70 5b 28 7a |H_Field)|->Map[(z|
|00000b90| 29 5d 5b 28 78 29 5d 29 | 0d 0d 73 74 61 74 69 63 |)][(x)])|..static|
|00000ba0| 20 44 42 4c 20 4e 6f 72 | 6d 61 6c 69 7a 65 20 50 | DBL Nor|malize P|
|00000bb0| 41 52 41 4d 53 28 28 20 | 56 45 43 54 4f 52 20 2a |ARAMS(( |VECTOR *|
|00000bc0| 41 2c 20 56 45 43 54 4f | 52 20 2a 42 20 29 29 3b |A, VECTO|R *B ));|
|00000bd0| 0d 73 74 61 74 69 63 20 | 44 42 4c 20 73 74 72 65 |.static |DBL stre|
|00000be0| 74 63 68 20 50 41 52 41 | 4d 53 28 28 44 42 4c 20 |tch PARA|MS((DBL |
|00000bf0| 78 29 29 3b 0d 73 74 61 | 74 69 63 20 69 6e 74 20 |x));.sta|tic int |
|00000c00| 49 6e 74 65 72 73 65 63 | 74 5f 43 73 67 5f 53 75 |Intersec|t_Csg_Su|
|00000c10| 62 5f 42 6c 6f 63 6b 20 | 50 41 52 41 4d 53 28 28 |b_Block |PARAMS((|
|00000c20| 48 46 5f 42 4c 4f 43 4b | 20 2a 42 6c 6f 63 6b 2c |HF_BLOCK| *Block,|
|00000c30| 20 52 41 59 20 2a 52 61 | 79 2c 0d 48 45 49 47 48 | RAY *Ra|y,.HEIGH|
|00000c40| 54 5f 46 49 45 4c 44 20 | 2a 48 5f 46 69 65 6c 64 |T_FIELD |*H_Field|
|00000c50| 2c 20 56 45 43 54 4f 52 | 20 2a 73 74 61 72 74 2c |, VECTOR| *start,|
|00000c60| 20 56 45 43 54 4f 52 20 | 2a 65 6e 64 29 29 3b 0d | VECTOR |*end));.|
|00000c70| 73 74 61 74 69 63 20 69 | 6e 74 20 49 6e 74 65 72 |static i|nt Inter|
|00000c80| 73 65 63 74 5f 43 73 67 | 5f 48 66 5f 4e 6f 64 65 |sect_Csg|_Hf_Node|
|00000c90| 20 50 41 52 41 4d 53 28 | 28 52 41 59 20 2a 52 61 | PARAMS(|(RAY *Ra|
|00000ca0| 79 2c 20 48 45 49 47 48 | 54 5f 46 49 45 4c 44 20 |y, HEIGH|T_FIELD |
|00000cb0| 2a 48 5f 46 69 65 6c 64 | 2c 0d 56 45 43 54 4f 52 |*H_Field|,.VECTOR|
|00000cc0| 20 2a 73 74 61 72 74 2c | 20 56 45 43 54 4f 52 20 | *start,| VECTOR |
|00000cd0| 2a 65 6e 64 29 29 3b 0d | 73 74 61 74 69 63 20 44 |*end));.|static D|
|00000ce0| 42 4c 20 4e 6f 72 6d 61 | 6c 69 7a 65 20 50 41 52 |BL Norma|lize PAR|
|00000cf0| 41 4d 53 28 28 20 56 45 | 43 54 4f 52 20 2a 41 2c |AMS(( VE|CTOR *A,|
|00000d00| 20 56 45 43 54 4f 52 20 | 2a 42 20 29 29 3b 0d 73 | VECTOR |*B ));.s|
|00000d10| 74 61 74 69 63 20 69 6e | 74 20 61 64 64 5f 73 69 |tatic in|t add_si|
|00000d20| 6e 67 6c 65 5f 6e 6f 72 | 6d 61 6c 20 50 41 52 41 |ngle_nor|mal PARA|
|00000d30| 4d 53 28 28 48 46 5f 76 | 61 6c 20 2a 2a 64 61 74 |MS((HF_v|al **dat|
|00000d40| 61 2c 20 69 6e 74 20 78 | 73 69 7a 65 2c 20 69 6e |a, int x|size, in|
|00000d50| 74 20 7a 73 69 7a 65 2c | 0d 69 6e 74 20 78 30 2c |t zsize,|.int x0,|
|00000d60| 20 69 6e 74 20 7a 30 2c | 69 6e 74 20 78 31 2c 20 | int z0,|int x1, |
|00000d70| 69 6e 74 20 7a 31 2c 69 | 6e 74 20 78 32 2c 20 69 |int z1,i|nt x2, i|
|00000d80| 6e 74 20 7a 32 2c 56 45 | 43 54 4f 52 20 2a 4e 29 |nt z2,VE|CTOR *N)|
|00000d90| 29 3b 0d 73 74 61 74 69 | 63 20 76 6f 69 64 20 73 |);.stati|c void s|
|00000da0| 6d 6f 6f 74 68 5f 68 65 | 69 67 68 74 5f 66 69 65 |mooth_he|ight_fie|
|00000db0| 6c 64 20 50 41 52 41 4d | 53 28 28 48 45 49 47 48 |ld PARAM|S((HEIGH|
|00000dc0| 54 5f 46 49 45 4c 44 20 | 2a 68 66 2c 20 69 6e 74 |T_FIELD |*hf, int|
|00000dd0| 20 78 73 69 7a 65 2c 20 | 69 6e 74 20 7a 73 69 7a | xsize, |int zsiz|
|00000de0| 65 29 29 3b 0d 0d 73 74 | 61 74 69 63 20 44 42 4c |e));..st|atic DBL|
|00000df0| 0d 4e 6f 72 6d 61 6c 69 | 7a 65 28 41 2c 20 42 29 |.Normali|ze(A, B)|
|00000e00| 0d 56 45 43 54 4f 52 20 | 2a 41 2c 20 2a 42 3b 0d |.VECTOR |*A, *B;.|
|00000e10| 20 20 7b 0d 20 20 44 42 | 4c 20 56 54 65 6d 70 20 |  {.  DB|L VTemp |
|00000e20| 3d 20 73 71 72 74 28 42 | 2d 3e 78 20 2a 20 42 2d |= sqrt(B|->x * B-|
|00000e30| 3e 78 20 2b 20 42 2d 3e | 79 20 2a 20 42 2d 3e 79 |>x + B->|y * B->y|
|00000e40| 20 2b 20 42 2d 3e 7a 20 | 2a 20 42 2d 3e 7a 29 3b | + B->z |* B->z);|
|00000e50| 0d 20 20 69 66 20 28 66 | 61 62 73 28 56 54 65 6d |.  if (f|abs(VTem|
|00000e60| 70 29 20 3e 20 45 50 53 | 49 4c 4f 4e 29 20 0d 20 |p) > EPS|ILON) . |
|00000e70| 20 20 20 7b 0d 20 20 20 | 20 41 2d 3e 78 20 3d 20 |   {.   | A->x = |
|00000e80| 42 2d 3e 78 20 2f 20 56 | 54 65 6d 70 3b 0d 20 20 |B->x / V|Temp;.  |
|00000e90| 20 20 41 2d 3e 79 20 3d | 20 42 2d 3e 79 20 2f 20 |  A->y =| B->y / |
|00000ea0| 56 54 65 6d 70 3b 0d 20 | 20 20 20 41 2d 3e 7a 20 |VTemp;. |   A->z |
|00000eb0| 3d 20 42 2d 3e 7a 20 2f | 20 56 54 65 6d 70 3b 0d |= B->z /| VTemp;.|
|00000ec0| 20 20 20 20 7d 0d 20 20 | 65 6c 73 65 20 0d 20 20 |    }.  |else .  |
|00000ed0| 20 20 7b 0d 20 20 20 20 | 41 2d 3e 78 20 3d 20 30 |  {.    |A->x = 0|
|00000ee0| 2e 30 3b 0d 20 20 20 20 | 41 2d 3e 79 20 3d 20 31 |.0;.    |A->y = 1|
|00000ef0| 2e 30 3b 0d 20 20 20 20 | 41 2d 3e 7a 20 3d 20 30 |.0;.    |A->z = 0|
|00000f00| 2e 30 3b 0d 20 20 20 20 | 7d 0d 20 20 72 65 74 75 |.0;.    |}.  retu|
|00000f10| 72 6e 20 56 54 65 6d 70 | 3b 0d 20 20 7d 0d 0d 20 |rn VTemp|;.  }.. |
|00000f20| 20 69 6e 74 20 49 6e 74 | 65 72 73 65 63 74 5f 50 | int Int|ersect_P|
|00000f30| 69 78 65 6c 28 78 2c 20 | 7a 2c 20 52 61 79 2c 20 |ixel(x, |z, Ray, |
|00000f40| 48 5f 46 69 65 6c 64 2c | 20 68 65 69 67 68 74 31 |H_Field,| height1|
|00000f50| 2c 20 68 65 69 67 68 74 | 32 29 0d 20 20 20 20 69 |, height|2).    i|
|00000f60| 6e 74 20 78 3b 0d 69 6e | 74 20 7a 3b 0d 52 41 59 |nt x;.in|t z;.RAY|
|00000f70| 20 2a 52 61 79 3b 0d 48 | 45 49 47 48 54 5f 46 49 | *Ray;.H|EIGHT_FI|
|00000f80| 45 4c 44 20 2a 48 5f 46 | 69 65 6c 64 3b 0d 44 42 |ELD *H_F|ield;.DB|
|00000f90| 4c 20 68 65 69 67 68 74 | 31 3b 0d 44 42 4c 20 68 |L height|1;.DBL h|
|00000fa0| 65 69 67 68 74 32 3b 0d | 20 20 7b 0d 20 20 56 45 |eight2;.|  {.  VE|
|00000fb0| 43 54 4f 52 20 54 31 56 | 31 2c 54 31 56 32 2c 54 |CTOR T1V|1,T1V2,T|
|00000fc0| 31 56 33 2c 54 32 56 31 | 2c 54 32 56 32 2c 54 32 |1V3,T2V1|,T2V2,T2|
|00000fd0| 56 33 2c 4c 6f 63 61 6c | 5f 4e 6f 72 6d 61 6c 2c |V3,Local|_Normal,|
|00000fe0| 4e 31 3b 0d 20 20 44 42 | 4c 20 70 6f 73 31 2c 70 |N1;.  DB|L pos1,p|
|00000ff0| 6f 73 32 2c 64 6f 74 2c | 64 65 70 74 68 31 2c 64 |os2,dot,|depth1,d|
|00001000| 65 70 74 68 32 2c 73 2c | 74 2c 79 31 2c 79 32 2c |epth2,s,|t,y1,y2,|
|00001010| 79 33 2c 79 34 3b 0d 20 | 20 44 42 4c 20 6d 61 78 |y3,y4;. | DBL max|
|00001020| 5f 68 65 69 67 68 74 2c | 20 6d 69 6e 5f 68 65 69 |_height,| min_hei|
|00001030| 67 68 74 3b 0d 20 20 69 | 6e 74 20 46 6f 75 6e 64 |ght;.  i|nt Found|
|00001040| 20 3d 20 46 41 4c 53 45 | 3b 0d 0d 20 20 79 31 20 | = FALSE|;..  y1 |
|00001050| 3d 20 47 65 74 5f 48 65 | 69 67 68 74 28 78 2c 7a |= Get_He|ight(x,z|
|00001060| 2c 48 5f 46 69 65 6c 64 | 29 3b 0d 20 20 79 32 20 |,H_Field|);.  y2 |
|00001070| 3d 20 47 65 74 5f 48 65 | 69 67 68 74 28 78 2b 31 |= Get_He|ight(x+1|
|00001080| 2c 7a 2c 48 5f 46 69 65 | 6c 64 29 3b 0d 20 20 79 |,z,H_Fie|ld);.  y|
|00001090| 33 20 3d 20 47 65 74 5f | 48 65 69 67 68 74 28 78 |3 = Get_|Height(x|
|000010a0| 2c 7a 2b 31 2c 48 5f 46 | 69 65 6c 64 29 3b 0d 20 |,z+1,H_F|ield);. |
|000010b0| 20 79 34 20 3d 20 47 65 | 74 5f 48 65 69 67 68 74 | y4 = Ge|t_Height|
|000010c0| 28 78 2b 31 2c 7a 2b 31 | 2c 48 5f 46 69 65 6c 64 |(x+1,z+1|,H_Field|
|000010d0| 29 3b 0d 0d 20 20 4d 61 | 6b 65 5f 56 65 63 74 6f |);..  Ma|ke_Vecto|
|000010e0| 72 28 26 54 31 56 31 2c | 28 44 42 4c 29 78 2c 79 |r(&T1V1,|(DBL)x,y|
|000010f0| 31 2c 28 44 42 4c 29 7a | 29 3b 0d 20 20 4d 61 6b |1,(DBL)z|);.  Mak|
|00001100| 65 5f 56 65 63 74 6f 72 | 28 26 54 31 56 32 2c 31 |e_Vector|(&T1V2,1|
|00001110| 2e 30 2c 79 32 2d 79 31 | 2c 30 2e 30 29 3b 0d 20 |.0,y2-y1|,0.0);. |
|00001120| 20 4d 61 6b 65 5f 56 65 | 63 74 6f 72 28 26 54 31 | Make_Ve|ctor(&T1|
|00001130| 56 33 2c 30 2e 30 2c 79 | 33 2d 79 31 2c 31 2e 30 |V3,0.0,y|3-y1,1.0|
|00001140| 29 3b 0d 20 20 4d 61 6b | 65 5f 56 65 63 74 6f 72 |);.  Mak|e_Vector|
|00001150| 28 26 54 32 56 31 2c 28 | 44 42 4c 29 28 78 2b 31 |(&T2V1,(|DBL)(x+1|
|00001160| 29 2c 79 34 2c 28 44 42 | 4c 29 28 7a 2b 31 29 29 |),y4,(DB|L)(z+1))|
|00001170| 3b 0d 20 20 4d 61 6b 65 | 5f 56 65 63 74 6f 72 28 |;.  Make|_Vector(|
|00001180| 26 54 32 56 32 2c 2d 31 | 2e 30 2c 79 33 2d 79 34 |&T2V2,-1|.0,y3-y4|
|00001190| 2c 30 2e 30 29 3b 0d 20 | 20 4d 61 6b 65 5f 56 65 |,0.0);. | Make_Ve|
|000011a0| 63 74 6f 72 28 26 54 32 | 56 33 2c 30 2e 30 2c 79 |ctor(&T2|V3,0.0,y|
|000011b0| 32 2d 79 34 2c 2d 31 2e | 30 29 3b 0d 0d 20 20 2f |2-y4,-1.|0);..  /|
|000011c0| 2a 0d 20 20 20 20 20 2a | 20 66 69 72 73 74 2c 20 |*.     *| first, |
|000011d0| 77 65 20 63 68 65 63 6b | 20 74 6f 20 73 65 65 20 |we check| to see |
|000011e0| 69 66 20 69 74 20 69 73 | 20 65 76 65 6e 20 70 6f |if it is| even po|
|000011f0| 73 73 69 62 6c 65 20 66 | 6f 72 20 74 68 65 20 72 |ssible f|or the r|
|00001200| 61 79 20 74 6f 0d 20 20 | 20 20 20 2a 20 69 6e 74 |ay to.  |   * int|
|00001210| 65 72 73 65 63 74 20 74 | 68 65 20 74 72 69 61 6e |ersect t|he trian|
|00001220| 67 6c 65 2e 0d 20 20 20 | 20 20 2a 2f 0d 0d 20 20 |gle..   |  */..  |
|00001230| 6d 61 78 5f 68 65 69 67 | 68 74 20 3d 20 6d 61 78 |max_heig|ht = max|
|00001240| 5f 76 61 6c 75 65 28 79 | 31 2c 6d 61 78 5f 76 61 |_value(y|1,max_va|
|00001250| 6c 75 65 28 79 32 2c 79 | 33 29 29 3b 0d 20 20 6d |lue(y2,y|3));.  m|
|00001260| 69 6e 5f 68 65 69 67 68 | 74 20 3d 20 6d 69 6e 5f |in_heigh|t = min_|
|00001270| 76 61 6c 75 65 28 79 31 | 2c 6d 69 6e 5f 76 61 6c |value(y1|,min_val|
|00001280| 75 65 28 79 32 2c 79 33 | 29 29 3b 0d 20 20 69 66 |ue(y2,y3|));.  if|
|00001290| 28 28 6d 61 78 5f 68 65 | 69 67 68 74 20 3e 3d 20 |((max_he|ight >= |
|000012a0| 68 65 69 67 68 74 31 29 | 20 26 26 20 28 6d 69 6e |height1)| && (min|
|000012b0| 5f 68 65 69 67 68 74 20 | 3c 3d 20 68 65 69 67 68 |_height |<= heigh|
|000012c0| 74 32 29 29 0d 20 20 20 | 20 7b 0d 20 20 20 20 56 |t2)).   | {.    V|
|000012d0| 43 72 6f 73 73 28 4c 6f | 63 61 6c 5f 4e 6f 72 6d |Cross(Lo|cal_Norm|
|000012e0| 61 6c 2c 54 31 56 33 2c | 54 31 56 32 29 3b 0d 20 |al,T1V3,|T1V2);. |
|000012f0| 20 20 20 56 44 6f 74 28 | 64 6f 74 2c 4c 6f 63 61 |   VDot(|dot,Loca|
|00001300| 6c 5f 4e 6f 72 6d 61 6c | 2c 52 61 79 2d 3e 44 69 |l_Normal|,Ray->Di|
|00001310| 72 65 63 74 69 6f 6e 29 | 3b 0d 0d 20 20 20 20 69 |rection)|;..    i|
|00001320| 66 28 28 64 6f 74 20 3e | 20 45 50 53 49 4c 4f 4e |f((dot >| EPSILON|
|00001330| 29 20 7c 7c 20 28 64 6f | 74 20 3c 20 2d 45 50 53 |) || (do|t < -EPS|
|00001340| 49 4c 4f 4e 29 29 0d 20 | 20 20 20 20 20 7b 0d 20 |ILON)). |     {. |
|00001350| 20 20 20 20 20 56 44 6f | 74 28 70 6f 73 31 2c 4c |     VDo|t(pos1,L|
|00001360| 6f 63 61 6c 5f 4e 6f 72 | 6d 61 6c 2c 54 31 56 31 |ocal_Nor|mal,T1V1|
|00001370| 29 3b 0d 20 20 20 20 20 | 20 56 44 6f 74 28 70 6f |);.     | VDot(po|
|00001380| 73 32 2c 4c 6f 63 61 6c | 5f 4e 6f 72 6d 61 6c 2c |s2,Local|_Normal,|
|00001390| 52 61 79 2d 3e 49 6e 69 | 74 69 61 6c 29 3b 0d 0d |Ray->Ini|tial);..|
|000013a0| 20 20 20 20 20 20 70 6f | 73 31 20 2d 3d 20 70 6f |      po|s1 -= po|
|000013b0| 73 32 3b 0d 0d 20 20 20 | 20 20 20 64 65 70 74 68 |s2;..   |   depth|
|000013c0| 31 20 3d 20 70 6f 73 31 | 20 2f 20 64 6f 74 3b 0d |1 = pos1| / dot;.|
|000013d0| 0d 20 20 20 20 20 20 69 | 66 28 28 64 65 70 74 68 |.      i|f((depth|
|000013e0| 31 20 3e 3d 20 6d 69 6e | 64 69 73 74 29 20 26 26 |1 >= min|dist) &&|
|000013f0| 20 28 64 65 70 74 68 31 | 20 3c 3d 20 6d 61 78 64 | (depth1| <= maxd|
|00001400| 69 73 74 29 29 20 0d 20 | 20 20 20 20 20 20 20 7b |ist)) . |       {|
|00001410| 0d 20 20 20 20 20 20 20 | 20 73 20 3d 20 52 61 79 |.       | s = Ray|
|00001420| 2d 3e 49 6e 69 74 69 61 | 6c 2e 78 2b 28 64 65 70 |->Initia|l.x+(dep|
|00001430| 74 68 31 2a 52 61 79 2d | 3e 44 69 72 65 63 74 69 |th1*Ray-|>Directi|
|00001440| 6f 6e 2e 78 29 2d 28 44 | 42 4c 29 78 3b 0d 20 20 |on.x)-(D|BL)x;.  |
|00001450| 20 20 20 20 20 20 74 20 | 3d 20 52 61 79 2d 3e 49 |      t |= Ray->I|
|00001460| 6e 69 74 69 61 6c 2e 7a | 2b 28 64 65 70 74 68 31 |nitial.z|+(depth1|
|00001470| 2a 52 61 79 2d 3e 44 69 | 72 65 63 74 69 6f 6e 2e |*Ray->Di|rection.|
|00001480| 7a 29 2d 28 44 42 4c 29 | 7a 3b 0d 0d 20 20 20 20 |z)-(DBL)|z;..    |
|00001490| 20 20 20 20 69 66 28 28 | 73 3e 3d 2d 30 2e 30 30 |    if((|s>=-0.00|
|000014a0| 30 31 29 20 26 26 20 28 | 74 3e 3d 2d 30 2e 30 30 |01) && (|t>=-0.00|
|000014b0| 30 31 29 20 26 26 20 28 | 28 73 2b 74 29 3c 3d 31 |01) && (|(s+t)<=1|
|000014c0| 2e 30 30 30 31 29 29 20 | 0d 20 20 20 20 20 20 20 |.0001)) |.       |
|000014d0| 20 20 20 7b 0d 20 20 20 | 20 20 20 20 20 20 20 69 |   {.   |       i|
|000014e0| 66 20 28 21 48 5f 46 69 | 65 6c 64 2d 3e 53 6d 6f |f (!H_Fi|eld->Smo|
|000014f0| 6f 74 68 65 64 29 20 0d | 20 20 20 20 20 20 20 20 |othed) .|        |
|00001500| 20 20 20 20 7b 0d 20 20 | 20 20 20 20 20 20 20 20 |    {.  |        |
|00001510| 20 20 4e 31 20 3d 20 4c | 6f 63 61 6c 5f 4e 6f 72 |  N1 = L|ocal_Nor|
|00001520| 6d 61 6c 3b 0d 20 20 20 | 20 20 20 20 20 20 20 20 |mal;.   |        |
|00001530| 20 69 66 20 28 48 5f 46 | 69 65 6c 64 2d 3e 63 61 | if (H_F|ield->ca|
|00001540| 63 68 65 5f 70 6f 73 20 | 3c 20 48 46 5f 43 41 43 |che_pos |< HF_CAC|
|00001550| 48 45 5f 53 49 5a 45 29 | 20 0d 20 20 20 20 20 20 |HE_SIZE)| .      |
|00001560| 20 20 20 20 20 20 20 20 | 7b 0d 20 20 20 20 20 20 |        |{.      |
|00001570| 20 20 20 20 20 20 20 20 | 48 5f 46 69 65 6c 64 2d |        |H_Field-|
|00001580| 3e 4e 6f 72 6d 61 6c 5f | 56 65 63 74 6f 72 5b 48 |>Normal_|Vector[H|
|00001590| 5f 46 69 65 6c 64 2d 3e | 63 61 63 68 65 5f 70 6f |_Field->|cache_po|
|000015a0| 73 5d 2e 6e 6f 72 6d 61 | 6c 20 3d 20 4e 31 3b 0d |s].norma|l = N1;.|
|000015b0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 48 5f |        |      H_|
|000015c0| 46 69 65 6c 64 2d 3e 4e | 6f 72 6d 61 6c 5f 56 65 |Field->N|ormal_Ve|
|000015d0| 63 74 6f 72 5b 48 5f 46 | 69 65 6c 64 2d 3e 63 61 |ctor[H_F|ield->ca|
|000015e0| 63 68 65 5f 70 6f 73 5d | 2e 78 20 3d 20 78 20 2b |che_pos]|.x = x +|
|000015f0| 20 73 3b 0d 20 20 20 20 | 20 20 20 20 20 20 20 20 | s;.    |        |
|00001600| 20 20 48 5f 46 69 65 6c | 64 2d 3e 4e 6f 72 6d 61 |  H_Fiel|d->Norma|
|00001610| 6c 5f 56 65 63 74 6f 72 | 5b 48 5f 46 69 65 6c 64 |l_Vector|[H_Field|
|00001620| 2d 3e 63 61 63 68 65 5f | 70 6f 73 5d 2e 7a 20 3d |->cache_|pos].z =|
|00001630| 20 7a 20 2b 20 74 3b 0d | 20 20 20 20 20 20 20 20 | z + t;.|        |
|00001640| 20 20 20 20 20 20 48 5f | 46 69 65 6c 64 2d 3e 63 |      H_|Field->c|
|00001650| 61 63 68 65 5f 70 6f 73 | 20 2b 3d 20 31 3b 0d 20 |ache_pos| += 1;. |
|00001660| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 7d 0d 20 |        |     }. |
|00001670| 20 20 20 20 20 20 20 20 | 20 20 20 7d 0d 0d 20 20 |        |   }..  |
|00001680| 20 20 20 20 20 20 20 20 | 56 53 63 61 6c 65 20 28 |        |VScale (|
|00001690| 54 31 56 31 2c 20 52 52 | 61 79 20 2d 3e 20 44 69 |T1V1, RR|ay -> Di|
|000016a0| 72 65 63 74 69 6f 6e 2c | 20 64 65 70 74 68 31 29 |rection,| depth1)|
|000016b0| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 56 41 64 64 |;.      |    VAdd|
|000016c0| 45 71 20 28 54 31 56 31 | 2c 20 52 52 61 79 20 2d |Eq (T1V1|, RRay -|
|000016d0| 3e 20 49 6e 69 74 69 61 | 6c 29 3b 0d 20 20 20 20 |> Initia|l);.    |
|000016e0| 20 20 20 20 20 20 69 66 | 20 28 50 6f 69 6e 74 5f |      if| (Point_|
|000016f0| 49 6e 5f 43 6c 69 70 20 | 28 26 54 31 56 31 2c 20 |In_Clip |(&T1V1, |
|00001700| 48 5f 46 69 65 6c 64 2d | 3e 43 6c 69 70 29 29 0d |H_Field-|>Clip)).|
|00001710| 20 20 20 20 20 20 20 20 | 20 20 20 20 7b 0d 20 20 |        |    {.  |
|00001720| 20 20 20 20 20 20 20 20 | 20 20 70 75 73 68 5f 65 |        |  push_e|
|00001730| 6e 74 72 79 28 64 65 70 | 74 68 31 2c 54 31 56 31 |ntry(dep|th1,T1V1|
|00001740| 2c 28 4f 42 4a 45 43 54 | 20 2a 29 48 5f 46 69 65 |,(OBJECT| *)H_Fie|
|00001750| 6c 64 2c 48 66 5f 53 74 | 61 63 6b 29 3b 0d 20 20 |ld,Hf_St|ack);.  |
|00001760| 20 20 20 20 20 20 20 20 | 20 20 46 6f 75 6e 64 20 |        |  Found |
|00001770| 3d 20 54 52 55 45 3b 0d | 20 20 20 20 20 20 20 20 |= TRUE;.|        |
|00001780| 20 20 20 20 52 61 79 5f | 48 74 5f 46 69 65 6c 64 |    Ray_|Ht_Field|
|00001790| 5f 54 65 73 74 73 5f 53 | 75 63 63 65 65 64 65 64 |_Tests_S|ucceeded|
|000017a0| 2b 2b 3b 0d 20 20 20 20 | 20 20 20 20 20 20 20 20 |++;.    |        |
|000017b0| 7d 0d 20 20 20 20 20 20 | 20 20 20 20 7d 0d 20 20 |}.      |    }.  |
|000017c0| 20 20 20 20 20 20 7d 0d | 20 20 20 20 20 20 7d 0d |      }.|      }.|
|000017d0| 20 20 20 20 7d 0d 0d 20 | 20 2f 2a 0d 09 20 2a 20 |    }.. | /*.. * |
|000017e0| 66 69 72 73 74 2c 20 77 | 65 20 63 68 65 63 6b 20 |first, w|e check |
|000017f0| 74 6f 20 73 65 65 20 69 | 66 20 69 74 20 69 73 20 |to see i|f it is |
|00001800| 65 76 65 6e 20 70 6f 73 | 73 69 62 6c 65 20 66 6f |even pos|sible fo|
|00001810| 72 20 74 68 65 20 72 61 | 79 20 74 6f 0d 09 20 2a |r the ra|y to.. *|
|00001820| 20 69 6e 74 65 72 73 65 | 63 74 20 74 68 65 20 74 | interse|ct the t|
|00001830| 72 69 61 6e 67 6c 65 2e | 0d 09 20 20 20 52 65 77 |riangle.|..   Rew|
|00001840| 72 69 74 74 65 6e 20 74 | 6f 20 67 65 74 20 61 72 |ritten t|o get ar|
|00001850| 6f 75 6e 64 20 43 6f 64 | 65 20 42 75 69 6c 64 65 |ound Cod|e Builde|
|00001860| 72 20 46 50 20 73 74 61 | 63 6b 20 70 72 6f 62 6c |r FP sta|ck probl|
|00001870| 65 6d 2e 0d 09 20 20 20 | 4f 72 69 67 69 6e 61 6c |em...   |Original|
|00001880| 20 63 6f 64 65 3a 0d 20 | 20 20 20 20 20 20 20 20 | code:. |        |
|00001890| 20 20 20 20 20 69 66 28 | 28 6d 61 78 5f 76 61 6c |     if(|(max_val|
|000018a0| 75 65 28 79 34 2c 6d 61 | 78 5f 76 61 6c 75 65 28 |ue(y4,ma|x_value(|
|000018b0| 79 32 2c 79 33 29 29 20 | 3e 3d 20 68 65 69 67 68 |y2,y3)) |>= heigh|
|000018c0| 74 31 29 20 26 26 20 0d | 09 20 20 20 20 20 20 28 |t1) && .|.      (|
|000018d0| 6d 69 6e 5f 76 61 6c 75 | 65 28 79 34 2c 6d 69 6e |min_valu|e(y4,min|
|000018e0| 5f 76 61 6c 75 65 28 79 | 32 2c 79 33 29 29 20 3c |_value(y|2,y3)) <|
|000018f0| 3d 20 68 65 69 67 68 74 | 32 29 29 20 20 20 20 20 |= height|2))     |
|00001900| 20 20 20 20 20 20 20 2a | 2f 0d 0d 20 20 6d 61 78 |       *|/..  max|
|00001910| 5f 68 65 69 67 68 74 20 | 3d 20 6d 61 78 5f 76 61 |_height |= max_va|
|00001920| 6c 75 65 28 79 34 2c 6d | 61 78 5f 76 61 6c 75 65 |lue(y4,m|ax_value|
|00001930| 28 79 32 2c 79 33 29 29 | 3b 0d 20 20 6d 69 6e 5f |(y2,y3))|;.  min_|
|00001940| 68 65 69 67 68 74 20 3d | 20 6d 69 6e 5f 76 61 6c |height =| min_val|
|00001950| 75 65 28 79 34 2c 6d 69 | 6e 5f 76 61 6c 75 65 28 |ue(y4,mi|n_value(|
|00001960| 79 32 2c 79 33 29 29 3b | 0d 20 20 69 66 28 28 6d |y2,y3));|.  if((m|
|00001970| 61 78 5f 68 65 69 67 68 | 74 20 3e 3d 20 68 65 69 |ax_heigh|t >= hei|
|00001980| 67 68 74 31 29 20 26 26 | 20 28 6d 69 6e 5f 68 65 |ght1) &&| (min_he|
|00001990| 69 67 68 74 20 3c 3d 20 | 68 65 69 67 68 74 32 29 |ight <= |height2)|
|000019a0| 29 0d 20 20 20 20 7b 0d | 20 20 20 20 56 43 72 6f |).    {.|    VCro|
|000019b0| 73 73 28 4c 6f 63 61 6c | 5f 4e 6f 72 6d 61 6c 2c |ss(Local|_Normal,|
|000019c0| 54 32 56 33 2c 54 32 56 | 32 29 3b 0d 20 20 20 20 |T2V3,T2V|2);.    |
|000019d0| 56 44 6f 74 28 64 6f 74 | 2c 4c 6f 63 61 6c 5f 4e |VDot(dot|,Local_N|
|000019e0| 6f 72 6d 61 6c 2c 52 61 | 79 2d 3e 44 69 72 65 63 |ormal,Ra|y->Direc|
|000019f0| 74 69 6f 6e 29 3b 0d 0d | 20 20 20 20 69 66 28 28 |tion);..|    if((|
|00001a00| 64 6f 74 20 3e 20 45 50 | 53 49 4c 4f 4e 29 20 7c |dot > EP|SILON) ||
|00001a10| 7c 20 28 64 6f 74 20 3c | 20 2d 45 50 53 49 4c 4f || (dot <| -EPSILO|
|00001a20| 4e 29 29 0d 20 20 20 20 | 20 20 7b 0d 20 20 20 20 |N)).    |  {.    |
|00001a30| 20 20 56 44 6f 74 28 70 | 6f 73 31 2c 4c 6f 63 61 |  VDot(p|os1,Loca|
|00001a40| 6c 5f 4e 6f 72 6d 61 6c | 2c 54 32 56 31 29 3b 0d |l_Normal|,T2V1);.|
|00001a50| 0d 20 20 20 20 20 20 56 | 44 6f 74 28 70 6f 73 32 |.      V|Dot(pos2|
|00001a60| 2c 4c 6f 63 61 6c 5f 4e | 6f 72 6d 61 6c 2c 52 61 |,Local_N|ormal,Ra|
|00001a70| 79 2d 3e 49 6e 69 74 69 | 61 6c 29 3b 0d 20 20 20 |y->Initi|al);.   |
|00001a80| 20 20 20 70 6f 73 31 20 | 2d 3d 20 70 6f 73 32 3b |   pos1 |-= pos2;|
|00001a90| 0d 0d 20 20 20 20 20 20 | 64 65 70 74 68 32 20 3d |..      |depth2 =|
|00001aa0| 20 70 6f 73 31 20 2f 20 | 64 6f 74 3b 0d 0d 20 20 | pos1 / |dot;..  |
|00001ab0| 20 20 20 20 69 66 28 28 | 64 65 70 74 68 32 20 3e |    if((|depth2 >|
|00001ac0| 3d 6d 69 6e 64 69 73 74 | 29 20 26 26 20 28 64 65 |=mindist|) && (de|
|00001ad0| 70 74 68 32 20 3c 3d 6d | 61 78 64 69 73 74 29 29 |pth2 <=m|axdist))|
|00001ae0| 0d 20 20 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |.       | {.     |
|00001af0| 20 20 20 73 20 3d 20 52 | 61 79 2d 3e 49 6e 69 74 |   s = R|ay->Init|
|00001b00| 69 61 6c 2e 78 2b 28 64 | 65 70 74 68 32 2a 52 61 |ial.x+(d|epth2*Ra|
|00001b10| 79 2d 3e 44 69 72 65 63 | 74 69 6f 6e 2e 78 29 2d |y->Direc|tion.x)-|
|00001b20| 28 44 42 4c 29 78 3b 0d | 20 20 20 20 20 20 20 20 |(DBL)x;.|        |
|00001b30| 74 20 3d 20 52 61 79 2d | 3e 49 6e 69 74 69 61 6c |t = Ray-|>Initial|
|00001b40| 2e 7a 2b 28 64 65 70 74 | 68 32 2a 52 61 79 2d 3e |.z+(dept|h2*Ray->|
|00001b50| 44 69 72 65 63 74 69 6f | 6e 2e 7a 29 2d 28 44 42 |Directio|n.z)-(DB|
|00001b60| 4c 29 7a 3b 0d 0d 20 20 | 20 20 20 20 20 20 69 66 |L)z;..  |      if|
|00001b70| 28 28 73 3c 3d 31 2e 30 | 30 30 31 29 20 26 26 20 |((s<=1.0|001) && |
|00001b80| 28 74 3c 3d 31 2e 30 30 | 30 31 29 20 26 26 20 28 |(t<=1.00|01) && (|
|00001b90| 28 73 2b 74 29 3e 30 2e | 39 39 39 39 29 29 20 0d |(s+t)>0.|9999)) .|
|00001ba0| 20 20 20 20 20 20 20 20 | 20 20 7b 0d 20 20 20 20 |        |  {.    |
|00001bb0| 20 20 20 20 20 20 69 66 | 20 28 21 48 5f 46 69 65 |      if| (!H_Fie|
|00001bc0| 6c 64 2d 3e 53 6d 6f 6f | 74 68 65 64 29 20 0d 20 |ld->Smoo|thed) . |
|00001bd0| 20 20 20 20 20 20 20 20 | 20 20 20 7b 0d 20 20 20 |        |   {.   |
|00001be0| 20 20 20 20 20 20 20 20 | 20 4e 31 20 3d 20 4c 6f |        | N1 = Lo|
|00001bf0| 63 61 6c 5f 4e 6f 72 6d | 61 6c 3b 0d 20 20 20 20 |cal_Norm|al;.    |
|00001c00| 20 20 20 20 20 20 20 20 | 69 66 20 28 48 5f 46 69 |        |if (H_Fi|
|00001c10| 65 6c 64 2d 3e 63 61 63 | 68 65 5f 70 6f 73 20 3c |eld->cac|he_pos <|
|00001c20| 20 48 46 5f 43 41 43 48 | 45 5f 53 49 5a 45 29 20 | HF_CACH|E_SIZE) |
|00001c30| 0d 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 7b |.       |       {|
|00001c40| 0d 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 48 |.       |       H|
|00001c50| 5f 46 69 65 6c 64 2d 3e | 4e 6f 72 6d 61 6c 5f 56 |_Field->|Normal_V|
|00001c60| 65 63 74 6f 72 5b 48 5f | 46 69 65 6c 64 2d 3e 63 |ector[H_|Field->c|
|00001c70| 61 63 68 65 5f 70 6f 73 | 5d 2e 6e 6f 72 6d 61 6c |ache_pos|].normal|
|00001c80| 20 3d 20 4e 31 3b 0d 20 | 20 20 20 20 20 20 20 20 | = N1;. |        |
|00001c90| 20 20 20 20 20 48 5f 46 | 69 65 6c 64 2d 3e 4e 6f |     H_F|ield->No|
|00001ca0| 72 6d 61 6c 5f 56 65 63 | 74 6f 72 5b 48 5f 46 69 |rmal_Vec|tor[H_Fi|
|00001cb0| 65 6c 64 2d 3e 63 61 63 | 68 65 5f 70 6f 73 5d 2e |eld->cac|he_pos].|
|00001cc0| 78 20 3d 20 78 20 2b 20 | 73 3b 0d 20 20 20 20 20 |x = x + |s;.     |
|00001cd0| 20 20 20 20 20 20 20 20 | 20 48 5f 46 69 65 6c 64 |        | H_Field|
|00001ce0| 2d 3e 4e 6f 72 6d 61 6c | 5f 56 65 63 74 6f 72 5b |->Normal|_Vector[|
|00001cf0| 48 5f 46 69 65 6c 64 2d | 3e 63 61 63 68 65 5f 70 |H_Field-|>cache_p|
|00001d00| 6f 73 5d 2e 7a 20 3d 20 | 7a 20 2b 20 74 3b 0d 20 |os].z = |z + t;. |
|00001d10| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 48 5f 46 |        |     H_F|
|00001d20| 69 65 6c 64 2d 3e 63 61 | 63 68 65 5f 70 6f 73 20 |ield->ca|che_pos |
|00001d30| 2b 3d 20 31 3b 0d 20 20 | 20 20 20 20 20 20 20 20 |+= 1;.  |        |
|00001d40| 20 20 20 20 7d 0d 20 20 | 20 20 20 20 20 20 20 20 |    }.  |        |
|00001d50| 20 20 7d 0d 0d 20 20 20 | 20 20 20 20 20 20 20 56 |  }..   |       V|
|00001d60| 53 63 61 6c 65 20 28 54 | 31 56 31 2c 20 52 52 61 |Scale (T|1V1, RRa|
|00001d70| 79 20 2d 3e 20 44 69 72 | 65 63 74 69 6f 6e 2c 20 |y -> Dir|ection, |
|00001d80| 64 65 70 74 68 32 29 3b | 0d 20 20 20 20 20 20 20 |depth2);|.       |
|00001d90| 20 20 20 56 41 64 64 45 | 71 20 28 54 31 56 31 2c |   VAddE|q (T1V1,|
|00001da0| 20 52 52 61 79 20 2d 3e | 20 49 6e 69 74 69 61 6c | RRay ->| Initial|
|00001db0| 29 3b 0d 20 20 20 20 20 | 20 20 20 20 20 69 66 20 |);.     |     if |
|00001dc0| 28 50 6f 69 6e 74 5f 49 | 6e 5f 43 6c 69 70 20 28 |(Point_I|n_Clip (|
|00001dd0| 26 54 31 56 31 2c 20 48 | 5f 46 69 65 6c 64 2d 3e |&T1V1, H|_Field->|
|00001de0| 43 6c 69 70 29 29 0d 20 | 20 20 20 20 20 20 20 20 |Clip)). |        |
|00001df0| 20 20 20 7b 0d 20 20 20 | 20 20 20 20 20 20 20 20 |   {.   |        |
|00001e00| 20 70 75 73 68 5f 65 6e | 74 72 79 28 64 65 70 74 | push_en|try(dept|
|00001e10| 68 32 2c 54 31 56 31 2c | 28 4f 42 4a 45 43 54 20 |h2,T1V1,|(OBJECT |
|00001e20| 2a 29 48 5f 46 69 65 6c | 64 2c 48 66 5f 53 74 61 |*)H_Fiel|d,Hf_Sta|
|00001e30| 63 6b 29 3b 0d 20 20 20 | 20 20 20 20 20 20 20 20 |ck);.   |        |
|00001e40| 20 46 6f 75 6e 64 20 3d | 20 54 52 55 45 3b 0d 20 | Found =| TRUE;. |
|00001e50| 20 20 20 20 20 20 20 20 | 20 20 20 52 61 79 5f 48 |        |   Ray_H|
|00001e60| 74 5f 46 69 65 6c 64 5f | 54 65 73 74 73 5f 53 75 |t_Field_|Tests_Su|
|00001e70| 63 63 65 65 64 65 64 2b | 2b 3b 0d 20 20 20 20 20 |cceeded+|+;.     |
|00001e80| 20 20 20 20 20 20 20 7d | 0d 20 20 20 20 20 20 20 |       }|.       |
|00001e90| 20 20 20 7d 0d 20 20 20 | 20 20 20 20 20 7d 0d 20 |   }.   |     }. |
|00001ea0| 20 20 20 20 20 7d 0d 20 | 20 20 20 7d 0d 0d 20 20 |     }. |   }..  |
|00001eb0| 72 65 74 75 72 6e 28 46 | 6f 75 6e 64 29 3b 0d 20 |return(F|ound);. |
|00001ec0| 20 7d 0d 0d 69 6e 74 20 | 49 6e 74 65 72 73 65 63 | }..int |Intersec|
|00001ed0| 74 5f 53 75 62 5f 42 6c | 6f 63 6b 28 42 6c 6f 63 |t_Sub_Bl|ock(Bloc|
|00001ee0| 6b 2c 20 52 61 79 2c 20 | 48 5f 46 69 65 6c 64 2c |k, Ray, |H_Field,|
|00001ef0| 20 73 74 61 72 74 2c 20 | 65 6e 64 29 0d 48 46 5f | start, |end).HF_|
|00001f00| 42 4c 4f 43 4b 20 2a 42 | 6c 6f 63 6b 3b 0d 52 41 |BLOCK *B|lock;.RA|
|00001f10| 59 20 2a 52 61 79 3b 0d | 48 45 49 47 48 54 5f 46 |Y *Ray;.|HEIGHT_F|
|00001f20| 49 45 4c 44 20 2a 48 5f | 46 69 65 6c 64 3b 0d 56 |IELD *H_|Field;.V|
|00001f30| 45 43 54 4f 52 20 2a 73 | 74 61 72 74 2c 20 2a 65 |ECTOR *s|tart, *e|
|00001f40| 6e 64 3b 0d 20 20 7b 0d | 20 20 44 42 4c 20 79 31 |nd;.  {.|  DBL y1|
|00001f50| 2c 20 79 32 3b 0d 20 20 | 44 42 4c 20 73 78 2c 20 |, y2;.  |DBL sx, |
|00001f60| 73 79 2c 20 73 7a 2c 20 | 65 78 2c 20 65 7a 2c 20 |sy, sz, |ex, ez, |
|00001f70| 66 2c 20 74 78 2c 20 74 | 7a 3b 0d 20 20 69 6e 74 |f, tx, t|z;.  int|
|00001f80| 20 69 78 2c 20 69 7a 2c | 20 6c 65 6e 67 74 68 2c | ix, iz,| length,|
|00001f90| 20 69 3b 0d 0d 20 20 69 | 66 28 6d 69 6e 5f 76 61 | i;..  i|f(min_va|
|00001fa0| 6c 75 65 28 73 74 61 72 | 74 2d 3e 79 2c 65 6e 64 |lue(star|t->y,end|
|00001fb0| 2d 3e 79 29 20 3e 20 28 | 44 42 4c 29 42 6c 6f 63 |->y) > (|DBL)Bloc|
|00001fc0| 6b 2d 3e 6d 61 78 5f 79 | 29 0d 20 20 20 20 72 65 |k->max_y|).    re|
|00001fd0| 74 75 72 6e 28 46 41 4c | 53 45 29 3b 0d 0d 20 20 |turn(FAL|SE);..  |
|00001fe0| 69 66 28 6d 61 78 5f 76 | 61 6c 75 65 28 73 74 61 |if(max_v|alue(sta|
|00001ff0| 72 74 2d 3e 79 2c 65 6e | 64 2d 3e 79 29 20 3c 20 |rt->y,en|d->y) < |
|00002000| 28 44 42 4c 29 42 6c 6f | 63 6b 2d 3e 6d 69 6e 5f |(DBL)Blo|ck->min_|
|00002010| 79 29 0d 20 20 20 20 72 | 65 74 75 72 6e 28 46 41 |y).    r|eturn(FA|
|00002020| 4c 53 45 29 3b 0d 0d 20 | 20 73 78 20 3d 20 73 74 |LSE);.. | sx = st|
|00002030| 61 72 74 2d 3e 78 3b 0d | 20 20 65 78 20 3d 20 65 |art->x;.|  ex = e|
|00002040| 6e 64 2d 3e 78 3b 0d 20 | 20 73 7a 20 3d 20 73 74 |nd->x;. | sz = st|
|00002050| 61 72 74 2d 3e 7a 3b 0d | 20 20 65 7a 20 3d 20 65 |art->z;.|  ez = e|
|00002060| 6e 64 2d 3e 7a 3b 0d 20 | 20 73 79 20 3d 20 73 74 |nd->z;. | sy = st|
|00002070| 61 72 74 2d 3e 79 3b 0d | 0d 20 20 69 66 28 58 5f |art->y;.|.  if(X_|
|00002080| 44 6f 6d 29 20 0d 20 20 | 20 20 7b 0d 20 20 20 20 |Dom) .  |  {.    |
|00002090| 69 66 28 69 73 64 78 20 | 3e 3d 20 30 29 20 0d 20 |if(isdx |>= 0) . |
|000020a0| 20 20 20 20 20 7b 0d 20 | 20 20 20 20 20 66 20 3d |     {. |     f =|
|000020b0| 20 66 6c 6f 6f 72 28 73 | 78 29 20 2d 20 73 78 3b | floor(s|x) - sx;|
|000020c0| 0d 20 20 20 20 20 20 73 | 78 20 3d 20 66 6c 6f 6f |.      s|x = floo|
|000020d0| 72 28 73 78 29 3b 0d 20 | 20 20 20 20 20 73 79 20 |r(sx);. |     sy |
|000020e0| 2b 3d 20 4d 79 78 20 2a | 20 66 3b 0d 20 20 20 20 |+= Myx *| f;.    |
|000020f0| 20 20 73 7a 20 2b 3d 20 | 4d 7a 78 20 2a 20 66 3b |  sz += |Mzx * f;|
|00002100| 0d 20 20 20 20 20 20 65 | 78 20 3d 20 63 65 69 6c |.      e|x = ceil|
|00002110| 28 65 78 29 20 2d 20 31 | 2e 30 3b 0d 20 20 20 20 |(ex) - 1|.0;.    |
|00002120| 20 20 69 78 20 3d 20 28 | 69 6e 74 29 73 78 3b 0d |  ix = (|int)sx;.|
|00002130| 20 20 20 20 20 20 7d 0d | 20 20 20 20 65 6c 73 65 |      }.|    else|
|00002140| 20 0d 20 20 20 20 20 20 | 7b 0d 20 20 20 20 20 20 | .      |{.      |
|00002150| 66 20 3d 20 63 65 69 6c | 28 73 78 29 20 2d 20 73 |f = ceil|(sx) - s|
|00002160| 78 3b 0d 20 20 20 20 20 | 20 73 78 20 3d 20 63 65 |x;.     | sx = ce|
|00002170| 69 6c 28 73 78 29 20 2d | 20 31 2e 30 3b 0d 20 20 |il(sx) -| 1.0;.  |
|00002180| 20 20 20 20 73 79 20 2b | 3d 20 4d 79 78 20 2a 20 |    sy +|= Myx * |
|00002190| 66 3b 0d 20 20 20 20 20 | 20 73 7a 20 2b 3d 20 4d |f;.     | sz += M|
|000021a0| 7a 78 20 2a 20 66 3b 0d | 20 20 20 20 20 20 65 78 |zx * f;.|      ex|
|000021b0| 20 3d 20 66 6c 6f 6f 72 | 28 65 78 29 3b 0d 20 20 | = floor|(ex);.  |
|000021c0| 20 20 20 20 69 78 20 3d | 20 28 69 6e 74 29 73 78 |    ix =| (int)sx|
|000021d0| 3b 0d 20 20 20 20 20 20 | 7d 0d 0d 20 20 20 20 20 |;.      |}..     |
|000021e0| 20 6c 65 6e 67 74 68 20 | 3d 20 28 69 6e 74 29 61 | length |= (int)a|
|000021f0| 62 73 28 28 69 6e 74 29 | 65 78 20 2d 20 28 69 6e |bs((int)|ex - (in|
|00002200| 74 29 73 78 29 3b 0d 0d | 20 20 20 20 69 66 20 28 |t)sx);..|    if (|
|00002210| 69 73 64 7a 20 3e 3d 20 | 30 29 20 0d 20 20 20 20 |isdz >= |0) .    |
|00002220| 20 20 7b 0d 20 20 20 20 | 20 20 74 7a 20 3d 20 66 |  {.    |  tz = f|
|00002230| 6c 6f 6f 72 28 73 74 61 | 72 74 2d 3e 7a 29 20 2b |loor(sta|rt->z) +|
|00002240| 20 31 2e 30 3b 0d 20 20 | 20 20 20 20 69 7a 20 3d | 1.0;.  |    iz =|
|00002250| 20 28 69 6e 74 29 73 74 | 61 72 74 2d 3e 7a 3b 0d | (int)st|art->z;.|
|00002260| 20 20 20 20 20 20 66 20 | 3d 20 73 7a 20 2d 20 74 |      f |= sz - t|
|00002270| 7a 3b 0d 20 20 20 20 20 | 20 7d 0d 20 20 20 20 65 |z;.     | }.    e|
|00002280| 6c 73 65 20 0d 20 20 20 | 20 20 20 7b 0d 20 20 20 |lse .   |   {.   |
|00002290| 20 20 20 74 7a 20 3d 20 | 63 65 69 6c 28 73 74 61 |   tz = |ceil(sta|
|000022a0| 72 74 2d 3e 7a 29 20 2d | 20 31 2e 30 3b 0d 20 20 |rt->z) -| 1.0;.  |
|000022b0| 20 20 20 20 69 7a 20 3d | 20 28 69 6e 74 29 74 7a |    iz =| (int)tz|
|000022c0| 3b 0d 20 20 20 20 20 20 | 66 20 3d 20 74 7a 20 2d |;.      |f = tz -|
|000022d0| 20 73 7a 3b 0d 20 20 20 | 20 20 20 7d 0d 0d 20 20 | sz;.   |   }..  |
|000022e0| 20 20 20 20 69 66 28 47 | 64 79 20 3e 3d 20 30 2e |    if(G|dy >= 0.|
|000022f0| 30 29 20 0d 20 20 20 20 | 20 20 7b 0d 20 20 20 20 |0) .    |  {.    |
|00002300| 20 20 79 31 20 3d 20 73 | 79 3b 0d 20 20 20 20 20 |  y1 = s|y;.     |
|00002310| 20 79 32 20 3d 20 73 79 | 20 2b 20 47 64 79 3b 0d | y2 = sy| + Gdy;.|
|00002320| 20 20 20 20 20 20 7d 0d | 20 20 20 20 20 20 65 6c |      }.|      el|
|00002330| 73 65 20 0d 20 20 20 20 | 20 20 7b 0d 20 20 20 20 |se .    |  {.    |
|00002340| 20 20 79 31 20 3d 20 73 | 79 20 2b 20 47 64 79 3b |  y1 = s|y + Gdy;|
|00002350| 0d 20 20 20 20 20 20 79 | 32 20 3d 20 73 79 3b 0d |.      y|2 = sy;.|
|00002360| 20 20 20 20 20 20 7d 0d | 0d 20 20 20 20 20 20 66 |      }.|.      f|
|00002370| 6f 72 28 69 3d 30 3b 69 | 3c 3d 6c 65 6e 67 74 68 |or(i=0;i|<=length|
|00002380| 3b 69 2b 2b 29 20 0d 20 | 20 20 20 20 20 7b 0d 20 |;i++) . |     {. |
|00002390| 20 20 20 20 20 69 66 28 | 49 6e 74 65 72 73 65 63 |     if(|Intersec|
|000023a0| 74 5f 50 69 78 65 6c 28 | 69 78 2c 69 7a 2c 52 61 |t_Pixel(|ix,iz,Ra|
|000023b0| 79 2c 48 5f 46 69 65 6c | 64 2c 79 31 2c 79 32 29 |y,H_Fiel|d,y1,y2)|
|000023c0| 29 0d 20 20 20 20 20 20 | 20 20 72 65 74 75 72 6e |).      |  return|
|000023d0| 28 54 52 55 45 29 3b 0d | 20 20 20 20 20 20 66 20 |(TRUE);.|      f |
|000023e0| 2b 3d 20 47 64 7a 3b 0d | 20 20 20 20 20 20 69 66 |+= Gdz;.|      if|
|000023f0| 28 66 3e 30 2e 30 29 20 | 0d 20 20 20 20 20 20 20 |(f>0.0) |.       |
|00002400| 20 7b 0d 20 20 20 20 20 | 20 20 20 69 7a 20 2b 3d | {.     |   iz +=|
|00002410| 20 69 73 64 7a 3b 0d 20 | 20 20 20 20 20 20 20 69 | isdz;. |       i|
|00002420| 66 28 49 6e 74 65 72 73 | 65 63 74 5f 50 69 78 65 |f(Inters|ect_Pixe|
|00002430| 6c 28 69 78 2c 69 7a 2c | 52 61 79 2c 48 5f 46 69 |l(ix,iz,|Ray,H_Fi|
|00002440| 65 6c 64 2c 79 31 2c 79 | 32 29 29 0d 20 20 20 20 |eld,y1,y|2)).    |
|00002450| 20 20 20 20 20 20 72 65 | 74 75 72 6e 28 54 52 55 |      re|turn(TRU|
|00002460| 45 29 3b 0d 20 20 20 20 | 20 20 20 20 66 20 2d 3d |E);.    |    f -=|
|00002470| 20 31 2e 30 3b 0d 20 20 | 20 20 20 20 20 20 7d 0d | 1.0;.  |      }.|
|00002480| 20 20 20 20 20 20 69 78 | 20 2b 3d 20 69 73 64 78 |      ix| += isdx|
|00002490| 3b 0d 20 20 20 20 20 20 | 79 31 20 2b 3d 20 47 64 |;.      |y1 += Gd|
|000024a0| 79 3b 0d 20 20 20 20 20 | 20 79 32 20 2b 3d 20 47 |y;.     | y2 += G|
|000024b0| 64 79 3b 0d 20 20 20 20 | 20 20 7d 0d 20 20 20 20 |dy;.    |  }.    |
|000024c0| 7d 0d 20 20 65 6c 73 65 | 20 0d 20 20 20 20 7b 0d |}.  else| .    {.|
|000024d0| 20 20 20 20 69 66 28 69 | 73 64 7a 20 3e 3d 20 30 |    if(i|sdz >= 0|
|000024e0| 29 20 0d 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |) .     | {.     |
|000024f0| 20 66 20 3d 20 66 6c 6f | 6f 72 28 73 7a 29 20 2d | f = flo|or(sz) -|
|00002500| 20 73 7a 3b 0d 20 20 20 | 20 20 20 73 7a 20 3d 20 | sz;.   |   sz = |
|00002510| 66 6c 6f 6f 72 28 73 7a | 29 3b 0d 20 20 20 20 20 |floor(sz|);.     |
|00002520| 20 73 79 20 2b 3d 20 4d | 79 7a 20 2a 20 66 3b 0d | sy += M|yz * f;.|
|00002530| 20 20 20 20 20 20 73 78 | 20 2b 3d 20 4d 78 7a 20 |      sx| += Mxz |
|00002540| 2a 20 66 3b 0d 20 20 20 | 20 20 20 65 7a 20 3d 20 |* f;.   |   ez = |
|00002550| 63 65 69 6c 28 65 7a 29 | 20 2d 20 31 2e 30 3b 0d |ceil(ez)| - 1.0;.|
|00002560| 20 20 20 20 20 20 69 7a | 20 3d 20 28 69 6e 74 29 |      iz| = (int)|
|00002570| 73 7a 3b 0d 20 20 20 20 | 20 20 7d 0d 20 20 20 20 |sz;.    |  }.    |
|00002580| 65 6c 73 65 20 0d 20 20 | 20 20 20 20 7b 0d 20 20 |else .  |    {.  |
|00002590| 20 20 20 20 66 20 3d 20 | 63 65 69 6c 28 73 7a 29 |    f = |ceil(sz)|
|000025a0| 20 2d 20 73 7a 3b 0d 20 | 20 20 20 20 20 73 7a 20 | - sz;. |     sz |
|000025b0| 3d 20 63 65 69 6c 28 73 | 7a 29 20 2d 20 31 2e 30 |= ceil(s|z) - 1.0|
|000025c0| 3b 0d 20 20 20 20 20 20 | 73 79 20 2b 3d 20 4d 79 |;.      |sy += My|
|000025d0| 7a 20 2a 20 66 3b 0d 20 | 20 20 20 20 20 73 78 20 |z * f;. |     sx |
|000025e0| 2b 3d 20 4d 78 7a 20 2a | 20 66 3b 0d 20 20 20 20 |+= Mxz *| f;.    |
|000025f0| 20 20 65 7a 20 3d 20 66 | 6c 6f 6f 72 28 65 7a 29 |  ez = f|loor(ez)|
|00002600| 3b 0d 20 20 20 20 20 20 | 69 7a 20 3d 20 28 69 6e |;.      |iz = (in|
|00002610| 74 29 73 7a 3b 0d 20 20 | 20 20 20 20 7d 20 20 20 |t)sz;.  |    }   |
|00002620| 20 20 20 20 20 20 20 20 | 20 20 0d 0d 20 20 20 20 |        |  ..    |
|00002630| 20 20 6c 65 6e 67 74 68 | 20 3d 20 28 69 6e 74 29 |  length| = (int)|
|00002640| 61 62 73 28 28 69 6e 74 | 29 65 7a 20 2d 20 28 69 |abs((int|)ez - (i|
|00002650| 6e 74 29 73 7a 29 3b 0d | 0d 20 20 20 20 69 66 20 |nt)sz);.|.    if |
|00002660| 28 69 73 64 78 20 3e 3d | 20 30 29 20 0d 20 20 20 |(isdx >=| 0) .   |
|00002670| 20 20 20 7b 0d 20 20 20 | 20 20 20 74 78 20 3d 20 |   {.   |   tx = |
|00002680| 66 6c 6f 6f 72 28 73 74 | 61 72 74 2d 3e 78 29 20 |floor(st|art->x) |
|00002690| 2b 20 31 2e 30 3b 0d 20 | 20 20 20 20 20 69 78 20 |+ 1.0;. |     ix |
|000026a0| 3d 20 28 69 6e 74 29 73 | 74 61 72 74 2d 3e 78 3b |= (int)s|tart->x;|
|000026b0| 0d 20 20 20 20 20 20 66 | 20 3d 20 73 78 20 2d 20 |.      f| = sx - |
|000026c0| 74 78 3b 0d 20 20 20 20 | 20 20 7d 0d 20 20 20 20 |tx;.    |  }.    |
|000026d0| 65 6c 73 65 20 0d 20 20 | 20 20 20 20 7b 0d 20 20 |else .  |    {.  |
|000026e0| 20 20 20 20 74 78 20 3d | 20 63 65 69 6c 28 73 74 |    tx =| ceil(st|
|000026f0| 61 72 74 2d 3e 78 29 20 | 2d 20 31 2e 30 3b 0d 20 |art->x) |- 1.0;. |
|00002700| 20 20 20 20 20 69 78 20 | 3d 20 28 69 6e 74 29 74 |     ix |= (int)t|
|00002710| 78 3b 0d 20 20 20 20 20 | 20 66 20 3d 20 74 78 20 |x;.     | f = tx |
|00002720| 2d 20 73 78 3b 0d 20 20 | 20 20 20 20 7d 0d 0d 20 |- sx;.  |    }.. |
|00002730| 20 20 20 20 20 69 66 28 | 47 64 79 20 3e 3d 20 30 |     if(|Gdy >= 0|
|00002740| 2e 30 29 20 0d 20 20 20 | 20 20 20 7b 0d 20 20 20 |.0) .   |   {.   |
|00002750| 20 20 20 79 31 20 3d 20 | 73 79 3b 0d 20 20 20 20 |   y1 = |sy;.    |
|00002760| 20 20 79 32 20 3d 20 73 | 79 20 2b 20 47 64 79 3b |  y2 = s|y + Gdy;|
|00002770| 0d 20 20 20 20 20 20 7d | 0d 20 20 20 20 20 20 65 |.      }|.      e|
|00002780| 6c 73 65 20 0d 20 20 20 | 20 20 20 7b 0d 20 20 20 |lse .   |   {.   |
|00002790| 20 20 20 79 31 20 3d 20 | 73 79 20 2b 20 47 64 79 |   y1 = |sy + Gdy|
|000027a0| 3b 0d 20 20 20 20 20 20 | 79 32 20 3d 20 73 79 3b |;.      |y2 = sy;|
|000027b0| 0d 20 20 20 20 20 20 7d | 0d 0d 20 20 20 20 20 20 |.      }|..      |
|000027c0| 66 6f 72 28 69 3d 30 3b | 69 3c 3d 6c 65 6e 67 74 |for(i=0;|i<=lengt|
|000027d0| 68 3b 69 2b 2b 29 20 0d | 20 20 20 20 20 20 7b 0d |h;i++) .|      {.|
|000027e0| 20 20 20 20 20 20 69 66 | 28 49 6e 74 65 72 73 65 |      if|(Interse|
|000027f0| 63 74 5f 50 69 78 65 6c | 28 69 78 2c 69 7a 2c 52 |ct_Pixel|(ix,iz,R|
|00002800| 61 79 2c 48 5f 46 69 65 | 6c 64 2c 79 31 2c 79 32 |ay,H_Fie|ld,y1,y2|
|00002810| 29 29 0d 20 20 20 20 20 | 20 20 20 72 65 74 75 72 |)).     |   retur|
|00002820| 6e 28 54 52 55 45 29 3b | 0d 20 20 20 20 20 20 66 |n(TRUE);|.      f|
|00002830| 20 2b 3d 20 47 64 78 3b | 0d 20 20 20 20 20 20 69 | += Gdx;|.      i|
|00002840| 66 28 66 3e 30 2e 30 29 | 20 0d 20 20 20 20 20 20 |f(f>0.0)| .      |
|00002850| 20 20 7b 0d 20 20 20 20 | 20 20 20 20 69 78 20 2b |  {.    |    ix +|
|00002860| 3d 20 69 73 64 78 3b 0d | 20 20 20 20 20 20 20 20 |= isdx;.|        |
|00002870| 69 66 28 49 6e 74 65 72 | 73 65 63 74 5f 50 69 78 |if(Inter|sect_Pix|
|00002880| 65 6c 28 69 78 2c 69 7a | 2c 52 61 79 2c 48 5f 46 |el(ix,iz|,Ray,H_F|
|00002890| 69 65 6c 64 2c 79 31 2c | 79 32 29 29 0d 20 20 20 |ield,y1,|y2)).   |
|000028a0| 20 20 20 20 20 20 20 72 | 65 74 75 72 6e 28 54 52 |       r|eturn(TR|
|000028b0| 55 45 29 3b 0d 20 20 20 | 20 20 20 20 20 66 20 2d |UE);.   |     f -|
|000028c0| 3d 20 31 2e 30 3b 0d 20 | 20 20 20 20 20 20 20 7d |= 1.0;. |       }|
|000028d0| 0d 20 20 20 20 20 20 69 | 7a 20 2b 3d 20 69 73 64 |.      i|z += isd|
|000028e0| 7a 3b 0d 20 20 20 20 20 | 20 79 31 20 2b 3d 20 47 |z;.     | y1 += G|
|000028f0| 64 79 3b 0d 20 20 20 20 | 20 20 79 32 20 2b 3d 20 |dy;.    |  y2 += |
|00002900| 47 64 79 3b 0d 20 20 20 | 20 20 20 7d 0d 20 20 20 |Gdy;.   |   }.   |
|00002910| 20 7d 0d 20 20 72 65 74 | 75 72 6e 20 28 46 41 4c | }.  ret|urn (FAL|
|00002920| 53 45 29 3b 0d 20 20 7d | 0d 0d 73 74 61 74 69 63 |SE);.  }|..static|
|00002930| 20 69 6e 74 20 49 6e 74 | 65 72 73 65 63 74 5f 43 | int Int|ersect_C|
|00002940| 73 67 5f 53 75 62 5f 42 | 6c 6f 63 6b 28 42 6c 6f |sg_Sub_B|lock(Blo|
|00002950| 63 6b 2c 20 52 61 79 2c | 20 48 5f 46 69 65 6c 64 |ck, Ray,| H_Field|
|00002960| 2c 20 73 74 61 72 74 2c | 20 65 6e 64 29 0d 48 46 |, start,| end).HF|
|00002970| 5f 42 4c 4f 43 4b 20 2a | 42 6c 6f 63 6b 3b 0d 52 |_BLOCK *|Block;.R|
|00002980| 41 59 20 2a 52 61 79 3b | 0d 48 45 49 47 48 54 5f |AY *Ray;|.HEIGHT_|
|00002990| 46 49 45 4c 44 20 2a 48 | 5f 46 69 65 6c 64 3b 0d |FIELD *H|_Field;.|
|000029a0| 56 45 43 54 4f 52 20 2a | 73 74 61 72 74 2c 20 2a |VECTOR *|start, *|
|000029b0| 65 6e 64 3b 0d 20 20 7b | 0d 20 20 44 42 4c 20 79 |end;.  {|.  DBL y|
|000029c0| 31 2c 20 79 32 3b 0d 20 | 20 44 42 4c 20 73 78 2c |1, y2;. | DBL sx,|
|000029d0| 20 73 79 2c 20 73 7a 2c | 20 65 78 2c 20 65 7a 2c | sy, sz,| ex, ez,|
|000029e0| 20 66 2c 20 74 78 2c 20 | 74 7a 3b 0d 20 20 69 6e | f, tx, |tz;.  in|
|000029f0| 74 20 69 78 2c 20 69 7a | 2c 20 6c 65 6e 67 74 68 |t ix, iz|, length|
|00002a00| 2c 20 69 2c 20 72 65 74 | 76 61 6c 3b 0d 0d 20 20 |, i, ret|val;..  |
|00002a10| 69 66 28 6d 69 6e 5f 76 | 61 6c 75 65 28 73 74 61 |if(min_v|alue(sta|
|00002a20| 72 74 2d 3e 79 2c 65 6e | 64 2d 3e 79 29 20 3e 20 |rt->y,en|d->y) > |
|00002a30| 28 44 42 4c 29 42 6c 6f | 63 6b 2d 3e 6d 61 78 5f |(DBL)Blo|ck->max_|
|00002a40| 79 29 0d 20 20 20 20 72 | 65 74 75 72 6e 28 46 41 |y).    r|eturn(FA|
|00002a50| 4c 53 45 29 3b 0d 0d 20 | 20 69 66 28 6d 61 78 5f |LSE);.. | if(max_|
|00002a60| 76 61 6c 75 65 28 73 74 | 61 72 74 2d 3e 79 2c 65 |value(st|art->y,e|
|00002a70| 6e 64 2d 3e 79 29 20 3c | 20 28 44 42 4c 29 42 6c |nd->y) <| (DBL)Bl|
|00002a80| 6f 63 6b 2d 3e 6d 69 6e | 5f 79 29 0d 20 20 20 20 |ock->min|_y).    |
|00002a90| 72 65 74 75 72 6e 28 46 | 41 4c 53 45 29 3b 0d 0d |return(F|ALSE);..|
|00002aa0| 20 20 72 65 74 76 61 6c | 20 3d 20 46 41 4c 53 45 |  retval| = FALSE|
|00002ab0| 3b 0d 20 20 73 78 20 3d | 20 73 74 61 72 74 2d 3e |;.  sx =| start->|
|00002ac0| 78 3b 0d 20 20 65 78 20 | 3d 20 65 6e 64 2d 3e 78 |x;.  ex |= end->x|
|00002ad0| 3b 0d 20 20 73 7a 20 3d | 20 73 74 61 72 74 2d 3e |;.  sz =| start->|
|00002ae0| 7a 3b 0d 20 20 65 7a 20 | 3d 20 65 6e 64 2d 3e 7a |z;.  ez |= end->z|
|00002af0| 3b 0d 20 20 73 79 20 3d | 20 73 74 61 72 74 2d 3e |;.  sy =| start->|
|00002b00| 79 3b 0d 0d 20 20 69 66 | 28 58 5f 44 6f 6d 29 20 |y;..  if|(X_Dom) |
|00002b10| 0d 20 20 20 20 7b 0d 20 | 20 20 20 69 66 28 69 73 |.    {. |   if(is|
|00002b20| 64 78 20 3e 3d 20 30 29 | 20 0d 20 20 20 20 20 20 |dx >= 0)| .      |
|00002b30| 7b 0d 20 20 20 20 20 20 | 66 20 3d 20 66 6c 6f 6f |{.      |f = floo|
|00002b40| 72 28 73 78 29 20 2d 20 | 73 78 3b 0d 20 20 20 20 |r(sx) - |sx;.    |
|00002b50| 20 20 73 78 20 3d 20 66 | 6c 6f 6f 72 28 73 78 29 |  sx = f|loor(sx)|
|00002b60| 3b 0d 20 20 20 20 20 20 | 73 79 20 2b 3d 20 4d 79 |;.      |sy += My|
|00002b70| 78 20 2a 20 66 3b 0d 20 | 20 20 20 20 20 73 7a 20 |x * f;. |     sz |
|00002b80| 2b 3d 20 4d 7a 78 20 2a | 20 66 3b 0d 20 20 20 20 |+= Mzx *| f;.    |
|00002b90| 20 20 65 78 20 3d 20 63 | 65 69 6c 28 65 78 29 20 |  ex = c|eil(ex) |
|00002ba0| 2d 20 31 2e 30 3b 0d 20 | 20 20 20 20 20 69 78 20 |- 1.0;. |     ix |
|00002bb0| 3d 20 28 69 6e 74 29 73 | 78 3b 0d 20 20 20 20 20 |= (int)s|x;.     |
|00002bc0| 20 7d 0d 20 20 20 20 65 | 6c 73 65 20 0d 20 20 20 | }.    e|lse .   |
|00002bd0| 20 20 20 7b 0d 20 20 20 | 20 20 20 66 20 3d 20 63 |   {.   |   f = c|
|00002be0| 65 69 6c 28 73 78 29 20 | 2d 20 73 78 3b 0d 20 20 |eil(sx) |- sx;.  |
|00002bf0| 20 20 20 20 73 78 20 3d | 20 63 65 69 6c 28 73 78 |    sx =| ceil(sx|
|00002c00| 29 20 2d 20 31 2e 30 3b | 0d 20 20 20 20 20 20 73 |) - 1.0;|.      s|
|00002c10| 79 20 2b 3d 20 4d 79 78 | 20 2a 20 66 3b 0d 20 20 |y += Myx| * f;.  |
|00002c20| 20 20 20 20 73 7a 20 2b | 3d 20 4d 7a 78 20 2a 20 |    sz +|= Mzx * |
|00002c30| 66 3b 0d 20 20 20 20 20 | 20 65 78 20 3d 20 66 6c |f;.     | ex = fl|
|00002c40| 6f 6f 72 28 65 78 29 3b | 0d 20 20 20 20 20 20 69 |oor(ex);|.      i|
|00002c50| 78 20 3d 20 28 69 6e 74 | 29 73 78 3b 0d 20 20 20 |x = (int|)sx;.   |
|00002c60| 20 20 20 7d 0d 0d 20 20 | 20 20 20 20 6c 65 6e 67 |   }..  |    leng|
|00002c70| 74 68 20 3d 20 28 69 6e | 74 29 20 61 62 73 28 28 |th = (in|t) abs((|
|00002c80| 69 6e 74 29 65 78 20 2d | 20 28 69 6e 74 29 73 78 |int)ex -| (int)sx|
|00002c90| 29 3b 0d 0d 20 20 20 20 | 69 66 20 28 69 73 64 7a |);..    |if (isdz|
|00002ca0| 20 3e 3d 20 30 29 20 0d | 20 20 20 20 20 20 7b 0d | >= 0) .|      {.|
|00002cb0| 20 20 20 20 20 20 74 7a | 20 3d 20 66 6c 6f 6f 72 |      tz| = floor|
|00002cc0| 28 73 74 61 72 74 2d 3e | 7a 29 20 2b 20 31 2e 30 |(start->|z) + 1.0|
|00002cd0| 3b 0d 20 20 20 20 20 20 | 69 7a 20 3d 20 28 69 6e |;.      |iz = (in|
|00002ce0| 74 29 73 74 61 72 74 2d | 3e 7a 3b 0d 20 20 20 20 |t)start-|>z;.    |
|00002cf0| 20 20 66 20 3d 20 73 7a | 20 2d 20 74 7a 3b 0d 20 |  f = sz| - tz;. |
|00002d00| 20 20 20 20 20 7d 0d 20 | 20 20 20 65 6c 73 65 20 |     }. |   else |
|00002d10| 0d 20 20 20 20 20 20 7b | 0d 20 20 20 20 20 20 74 |.      {|.      t|
|00002d20| 7a 20 3d 20 63 65 69 6c | 28 73 74 61 72 74 2d 3e |z = ceil|(start->|
|00002d30| 7a 29 20 2d 20 31 2e 30 | 3b 0d 20 20 20 20 20 20 |z) - 1.0|;.      |
|00002d40| 69 7a 20 3d 20 28 69 6e | 74 29 74 7a 3b 0d 20 20 |iz = (in|t)tz;.  |
|00002d50| 20 20 20 20 66 20 3d 20 | 74 7a 20 2d 20 73 7a 3b |    f = |tz - sz;|
|00002d60| 0d 20 20 20 20 20 20 7d | 0d 0d 20 20 20 20 20 20 |.      }|..      |
|00002d70| 69 66 28 47 64 79 20 3e | 3d 20 30 2e 30 29 20 0d |if(Gdy >|= 0.0) .|
|00002d80| 20 20 20 20 20 20 7b 0d | 20 20 20 20 20 20 79 31 |      {.|      y1|
|00002d90| 20 3d 20 73 79 3b 0d 20 | 20 20 20 20 20 79 32 20 | = sy;. |     y2 |
|00002da0| 3d 20 73 79 20 2b 20 47 | 64 79 3b 0d 20 20 20 20 |= sy + G|dy;.    |
|00002db0| 20 20 7d 0d 20 20 20 20 | 20 20 65 6c 73 65 20 0d |  }.    |  else .|
|00002dc0| 20 20 20 20 20 20 7b 0d | 20 20 20 20 20 20 79 31 |      {.|      y1|
|00002dd0| 20 3d 20 73 79 20 2b 20 | 47 64 79 3b 0d 20 20 20 | = sy + |Gdy;.   |
|00002de0| 20 20 20 79 32 20 3d 20 | 73 79 3b 0d 20 20 20 20 |   y2 = |sy;.    |
|00002df0| 20 20 7d 0d 0d 20 20 20 | 20 20 20 66 6f 72 28 69 |  }..   |   for(i|
|00002e00| 3d 30 3b 69 3c 3d 6c 65 | 6e 67 74 68 3b 69 2b 2b |=0;i<=le|ngth;i++|
|00002e10| 29 20 0d 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |) .     | {.     |
|00002e20| 20 69 66 28 49 6e 74 65 | 72 73 65 63 74 5f 50 69 | if(Inte|rsect_Pi|
|00002e30| 78 65 6c 28 69 78 2c 69 | 7a 2c 52 61 79 2c 48 5f |xel(ix,i|z,Ray,H_|
|00002e40| 46 69 65 6c 64 2c 79 31 | 2c 79 32 29 29 0d 20 20 |Field,y1|,y2)).  |
|00002e50| 20 20 20 20 20 20 72 65 | 74 76 61 6c 20 3d 20 54 |      re|tval = T|
|00002e60| 52 55 45 3b 0d 20 20 20 | 20 20 20 66 20 2b 3d 20 |RUE;.   |   f += |
|00002e70| 47 64 7a 3b 0d 20 20 20 | 20 20 20 69 66 28 66 3e |Gdz;.   |   if(f>|
|00002e80| 30 2e 30 29 20 0d 20 20 | 20 20 20 20 20 20 7b 0d |0.0) .  |      {.|
|00002e90| 20 20 20 20 20 20 20 20 | 69 7a 20 2b 3d 20 69 73 |        |iz += is|
|00002ea0| 64 7a 3b 0d 20 20 20 20 | 20 20 20 20 69 66 28 49 |dz;.    |    if(I|
|00002eb0| 6e 74 65 72 73 65 63 74 | 5f 50 69 78 65 6c 28 69 |ntersect|_Pixel(i|
|00002ec0| 78 2c 69 7a 2c 52 61 79 | 2c 48 5f 46 69 65 6c 64 |x,iz,Ray|,H_Field|
|00002ed0| 2c 79 31 2c 79 32 29 29 | 0d 20 20 20 20 20 20 20 |,y1,y2))|.       |
|00002ee0| 20 20 20 72 65 74 76 61 | 6c 20 3d 20 54 52 55 45 |   retva|l = TRUE|
|00002ef0| 3b 0d 20 20 20 20 20 20 | 20 20 66 20 2d 3d 20 31 |;.      |  f -= 1|
|00002f00| 2e 30 3b 0d 20 20 20 20 | 20 20 20 20 7d 0d 20 20 |.0;.    |    }.  |
|00002f10| 20 20 20 20 69 78 20 2b | 3d 20 69 73 64 78 3b 0d |    ix +|= isdx;.|
|00002f20| 20 20 20 20 20 20 79 31 | 20 2b 3d 20 47 64 79 3b |      y1| += Gdy;|
|00002f30| 0d 20 20 20 20 20 20 79 | 32 20 2b 3d 20 47 64 79 |.      y|2 += Gdy|
|00002f40| 3b 0d 20 20 20 20 20 20 | 7d 0d 20 20 20 20 7d 0d |;.      |}.    }.|
|00002f50| 20 20 65 6c 73 65 20 0d | 20 20 20 20 7b 0d 20 20 |  else .|    {.  |
|00002f60| 20 20 69 66 28 69 73 64 | 7a 20 3e 3d 20 30 29 20 |  if(isd|z >= 0) |
|00002f70| 0d 20 20 20 20 20 20 7b | 0d 20 20 20 20 20 20 66 |.      {|.      f|
|00002f80| 20 3d 20 66 6c 6f 6f 72 | 28 73 7a 29 20 2d 20 73 | = floor|(sz) - s|
|00002f90| 7a 3b 0d 20 20 20 20 20 | 20 73 7a 20 3d 20 66 6c |z;.     | sz = fl|
|00002fa0| 6f 6f 72 28 73 7a 29 3b | 0d 20 20 20 20 20 20 73 |oor(sz);|.      s|
|00002fb0| 79 20 2b 3d 20 4d 79 7a | 20 2a 20 66 3b 0d 20 20 |y += Myz| * f;.  |
|00002fc0| 20 20 20 20 73 78 20 2b | 3d 20 4d 78 7a 20 2a 20 |    sx +|= Mxz * |
|00002fd0| 66 3b 0d 20 20 20 20 20 | 20 65 7a 20 3d 20 63 65 |f;.     | ez = ce|
|00002fe0| 69 6c 28 65 7a 29 20 2d | 20 31 2e 30 3b 0d 20 20 |il(ez) -| 1.0;.  |
|00002ff0| 20 20 20 20 69 7a 20 3d | 20 28 69 6e 74 29 73 7a |    iz =| (int)sz|
|00003000| 3b 0d 20 20 20 20 20 20 | 7d 0d 20 20 20 20 65 6c |;.      |}.    el|
|00003010| 73 65 20 0d 20 20 20 20 | 20 20 7b 0d 20 20 20 20 |se .    |  {.    |
|00003020| 20 20 66 20 3d 20 63 65 | 69 6c 28 73 7a 29 20 2d |  f = ce|il(sz) -|
|00003030| 20 73 7a 3b 0d 20 20 20 | 20 20 20 73 7a 20 3d 20 | sz;.   |   sz = |
|00003040| 63 65 69 6c 28 73 7a 29 | 20 2d 20 31 2e 30 3b 0d |ceil(sz)| - 1.0;.|
|00003050| 20 20 20 20 20 20 73 79 | 20 2b 3d 20 4d 79 7a 20 |      sy| += Myz |
|00003060| 2a 20 66 3b 0d 20 20 20 | 20 20 20 73 78 20 2b 3d |* f;.   |   sx +=|
|00003070| 20 4d 78 7a 20 2a 20 66 | 3b 0d 20 20 20 20 20 20 | Mxz * f|;.      |
|00003080| 65 7a 20 3d 20 66 6c 6f | 6f 72 28 65 7a 29 3b 0d |ez = flo|or(ez);.|
|00003090| 20 20 20 20 20 20 69 7a | 20 3d 20 28 69 6e 74 29 |      iz| = (int)|
|000030a0| 73 7a 3b 0d 20 20 20 20 | 20 20 7d 20 20 20 20 20 |sz;.    |  }     |
|000030b0| 20 20 20 20 20 20 20 20 | 0d 0d 20 20 20 20 20 20 |        |..      |
|000030c0| 6c 65 6e 67 74 68 20 3d | 20 28 69 6e 74 29 61 62 |length =| (int)ab|
|000030d0| 73 28 28 69 6e 74 29 65 | 7a 20 2d 20 28 69 6e 74 |s((int)e|z - (int|
|000030e0| 29 73 7a 29 3b 0d 0d 20 | 20 20 20 69 66 20 28 69 |)sz);.. |   if (i|
|000030f0| 73 64 78 20 3e 3d 20 30 | 29 20 0d 20 20 20 20 20 |sdx >= 0|) .     |
|00003100| 20 7b 0d 20 20 20 20 20 | 20 74 78 20 3d 20 66 6c | {.     | tx = fl|
|00003110| 6f 6f 72 28 73 74 61 72 | 74 2d 3e 78 29 20 2b 20 |oor(star|t->x) + |
|00003120| 31 2e 30 3b 0d 20 20 20 | 20 20 20 69 78 20 3d 20 |1.0;.   |   ix = |
|00003130| 28 69 6e 74 29 73 74 61 | 72 74 2d 3e 78 3b 0d 20 |(int)sta|rt->x;. |
|00003140| 20 20 20 20 20 66 20 3d | 20 73 78 20 2d 20 74 78 |     f =| sx - tx|
|00003150| 3b 0d 20 20 20 20 20 20 | 7d 0d 20 20 20 20 65 6c |;.      |}.    el|
|00003160| 73 65 20 0d 20 20 20 20 | 20 20 7b 0d 20 20 20 20 |se .    |  {.    |
|00003170| 20 20 74 78 20 3d 20 63 | 65 69 6c 28 73 74 61 72 |  tx = c|eil(star|
|00003180| 74 2d 3e 78 29 20 2d 20 | 31 2e 30 3b 0d 20 20 20 |t->x) - |1.0;.   |
|00003190| 20 20 20 69 78 20 3d 20 | 28 69 6e 74 29 74 78 3b |   ix = |(int)tx;|
|000031a0| 0d 20 20 20 20 20 20 66 | 20 3d 20 74 78 20 2d 20 |.      f| = tx - |
|000031b0| 73 78 3b 0d 20 20 20 20 | 20 20 7d 0d 0d 20 20 20 |sx;.    |  }..   |
|000031c0| 20 20 20 69 66 28 47 64 | 79 20 3e 3d 20 30 2e 30 |   if(Gd|y >= 0.0|
|000031d0| 29 20 0d 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |) .     | {.     |
|000031e0| 20 79 31 20 3d 20 73 79 | 3b 0d 20 20 20 20 20 20 | y1 = sy|;.      |
|000031f0| 79 32 20 3d 20 73 79 20 | 2b 20 47 64 79 3b 0d 20 |y2 = sy |+ Gdy;. |
|00003200| 20 20 20 20 20 7d 0d 20 | 20 20 20 20 20 65 6c 73 |     }. |     els|
|00003210| 65 20 0d 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |e .     | {.     |
|00003220| 20 79 31 20 3d 20 73 79 | 20 2b 20 47 64 79 3b 0d | y1 = sy| + Gdy;.|
|00003230| 20 20 20 20 20 20 79 32 | 20 3d 20 73 79 3b 0d 20 |      y2| = sy;. |
|00003240| 20 20 20 20 20 7d 0d 0d | 20 20 20 20 20 20 66 6f |     }..|      fo|
|00003250| 72 28 69 3d 30 3b 69 3c | 3d 6c 65 6e 67 74 68 3b |r(i=0;i<|=length;|
|00003260| 69 2b 2b 29 20 0d 20 20 | 20 20 20 20 7b 0d 20 20 |i++) .  |    {.  |
|00003270| 20 20 20 20 69 66 28 49 | 6e 74 65 72 73 65 63 74 |    if(I|ntersect|
|00003280| 5f 50 69 78 65 6c 28 69 | 78 2c 69 7a 2c 52 61 79 |_Pixel(i|x,iz,Ray|
|00003290| 2c 48 5f 46 69 65 6c 64 | 2c 79 31 2c 79 32 29 29 |,H_Field|,y1,y2))|
|000032a0| 0d 20 20 20 20 20 20 20 | 20 72 65 74 76 61 6c 20 |.       | retval |
|000032b0| 3d 20 54 52 55 45 3b 0d | 20 20 20 20 20 20 66 20 |= TRUE;.|      f |
|000032c0| 2b 3d 20 47 64 78 3b 0d | 20 20 20 20 20 20 69 66 |+= Gdx;.|      if|
|000032d0| 28 66 3e 30 2e 30 29 20 | 0d 20 20 20 20 20 20 20 |(f>0.0) |.       |
|000032e0| 20 7b 0d 20 20 20 20 20 | 20 20 20 69 78 20 2b 3d | {.     |   ix +=|
|000032f0| 20 69 73 64 78 3b 0d 20 | 20 20 20 20 20 20 20 69 | isdx;. |       i|
|00003300| 66 28 49 6e 74 65 72 73 | 65 63 74 5f 50 69 78 65 |f(Inters|ect_Pixe|
|00003310| 6c 28 69 78 2c 69 7a 2c | 52 61 79 2c 48 5f 46 69 |l(ix,iz,|Ray,H_Fi|
|00003320| 65 6c 64 2c 79 31 2c 79 | 32 29 29 0d 20 20 20 20 |eld,y1,y|2)).    |
|00003330| 20 20 20 20 20 20 72 65 | 74 76 61 6c 20 3d 20 54 |      re|tval = T|
|00003340| 52 55 45 3b 0d 20 20 20 | 20 20 20 20 20 66 20 2d |RUE;.   |     f -|
|00003350| 3d 20 31 2e 30 3b 0d 20 | 20 20 20 20 20 20 20 7d |= 1.0;. |       }|
|00003360| 0d 20 20 20 20 20 20 69 | 7a 20 2b 3d 20 69 73 64 |.      i|z += isd|
|00003370| 7a 3b 0d 20 20 20 20 20 | 20 79 31 20 2b 3d 20 47 |z;.     | y1 += G|
|00003380| 64 79 3b 0d 20 20 20 20 | 20 20 79 32 20 2b 3d 20 |dy;.    |  y2 += |
|00003390| 47 64 79 3b 0d 20 20 20 | 20 20 20 7d 0d 20 20 20 |Gdy;.   |   }.   |
|000033a0| 20 7d 0d 20 20 72 65 74 | 75 72 6e 20 28 72 65 74 | }.  ret|urn (ret|
|000033b0| 76 61 6c 29 3b 0d 20 20 | 7d 0d 0d 69 6e 74 20 49 |val);.  |}..int I|
|000033c0| 6e 74 65 72 73 65 63 74 | 5f 48 66 5f 4e 6f 64 65 |ntersect|_Hf_Node|
|000033d0| 28 52 61 79 2c 20 48 5f | 46 69 65 6c 64 2c 20 73 |(Ray, H_|Field, s|
|000033e0| 74 61 72 74 2c 20 65 6e | 64 29 0d 52 41 59 20 2a |tart, en|d).RAY *|
|000033f0| 52 61 79 3b 0d 48 45 49 | 47 48 54 5f 46 49 45 4c |Ray;.HEI|GHT_FIEL|
|00003400| 44 20 2a 48 5f 46 69 65 | 6c 64 3b 0d 56 45 43 54 |D *H_Fie|ld;.VECT|
|00003410| 4f 52 20 2a 73 74 61 72 | 74 2c 20 2a 65 6e 64 3b |OR *star|t, *end;|
|00003420| 0d 20 20 7b 0d 20 20 56 | 45 43 54 4f 52 20 2a 63 |.  {.  V|ECTOR *c|
|00003430| 75 72 72 2c 20 2a 6e 65 | 78 74 2c 20 2a 74 65 6d |urr, *ne|xt, *tem|
|00003440| 70 2c 20 74 65 6d 70 31 | 2c 20 74 65 6d 70 32 3b |p, temp1|, temp2;|
|00003450| 0d 20 20 44 42 4c 20 73 | 78 2c 20 73 79 2c 20 73 |.  DBL s|x, sy, s|
|00003460| 7a 2c 20 65 78 2c 20 65 | 79 2c 20 65 7a 2c 20 78 |z, ex, e|y, ez, x|
|00003470| 2c 20 79 2c 20 7a 3b 0d | 20 20 44 42 4c 20 74 6e |, y, z;.|  DBL tn|
|00003480| 65 61 72 2c 20 74 66 61 | 72 2c 20 74 2c 20 62 73 |ear, tfa|r, t, bs|
|00003490| 78 2c 20 62 73 7a 2c 20 | 62 65 78 2c 20 62 65 7a |x, bsz, |bex, bez|
|000034a0| 3b 0d 20 20 69 6e 74 20 | 69 78 2c 20 69 7a 2c 20 |;.  int |ix, iz, |
|000034b0| 78 5f 73 69 7a 65 2c 20 | 7a 5f 73 69 7a 65 2c 20 |x_size, |z_size, |
|000034c0| 6c 65 6e 67 74 68 2c 20 | 69 3b 0d 0d 20 20 78 20 |length, |i;..  x |
|000034d0| 3d 20 73 78 20 3d 20 73 | 74 61 72 74 2d 3e 78 3b |= sx = s|tart->x;|
|000034e0| 0d 20 20 79 20 3d 20 73 | 79 20 3d 20 73 74 61 72 |.  y = s|y = star|
|000034f0| 74 2d 3e 79 3b 0d 20 20 | 7a 20 3d 20 73 7a 20 3d |t->y;.  |z = sz =|
|00003500| 20 73 74 61 72 74 2d 3e | 7a 3b 0d 20 20 65 78 20 | start->|z;.  ex |
|00003510| 3d 20 65 6e 64 2d 3e 78 | 3b 0d 20 20 65 79 20 3d |= end->x|;.  ey =|
|00003520| 20 65 6e 64 2d 3e 79 3b | 0d 20 20 65 7a 20 3d 20 | end->y;|.  ez = |
|00003530| 65 6e 64 2d 3e 7a 3b 0d | 0d 20 20 62 73 78 20 3d |end->z;.|.  bsx =|
|00003540| 20 73 78 20 2a 20 49 6e | 76 5f 42 6c 6b 5f 53 69 | sx * In|v_Blk_Si|
|00003550| 7a 65 3b 0d 20 20 62 73 | 7a 20 3d 20 73 7a 20 2a |ze;.  bs|z = sz *|
|00003560| 20 49 6e 76 5f 42 6c 6b | 5f 53 69 7a 65 3b 0d 20 | Inv_Blk|_Size;. |
|00003570| 20 62 65 78 20 3d 20 65 | 78 20 2a 20 49 6e 76 5f | bex = e|x * Inv_|
|00003580| 42 6c 6b 5f 53 69 7a 65 | 3b 0d 20 20 62 65 7a 20 |Blk_Size|;.  bez |
|00003590| 3d 20 65 7a 20 2a 20 49 | 6e 76 5f 42 6c 6b 5f 53 |= ez * I|nv_Blk_S|
|000035a0| 69 7a 65 3b 0d 0d 20 20 | 69 66 20 28 69 73 64 78 |ize;..  |if (isdx|
|000035b0| 20 3e 3d 20 30 29 20 0d | 20 20 20 20 7b 0d 20 20 | >= 0) .|    {.  |
|000035c0| 20 20 62 73 78 20 3d 20 | 66 6c 6f 6f 72 28 62 73 |  bsx = |floor(bs|
|000035d0| 78 29 3b 0d 20 20 20 20 | 62 65 78 20 3d 20 63 65 |x);.    |bex = ce|
|000035e0| 69 6c 28 62 65 78 29 20 | 2d 20 31 2e 30 3b 0d 20 |il(bex) |- 1.0;. |
|000035f0| 20 20 20 7d 0d 20 20 65 | 6c 73 65 20 0d 20 20 20 |   }.  e|lse .   |
|00003600| 20 7b 0d 20 20 20 20 62 | 73 78 20 3d 20 63 65 69 | {.    b|sx = cei|
|00003610| 6c 28 62 73 78 29 20 2d | 20 31 2e 30 3b 0d 20 20 |l(bsx) -| 1.0;.  |
|00003620| 20 20 62 65 78 20 3d 20 | 66 6c 6f 6f 72 28 62 65 |  bex = |floor(be|
|00003630| 78 29 3b 0d 20 20 20 20 | 7d 0d 0d 20 20 20 20 69 |x);.    |}..    i|
|00003640| 66 20 28 69 73 64 7a 20 | 3e 3d 20 30 29 20 0d 20 |f (isdz |>= 0) . |
|00003650| 20 20 20 7b 0d 20 20 20 | 20 62 73 7a 20 3d 20 66 |   {.   | bsz = f|
|00003660| 6c 6f 6f 72 28 62 73 7a | 29 3b 0d 20 20 20 20 62 |loor(bsz|);.    b|
|00003670| 65 7a 20 3d 20 63 65 69 | 6c 28 62 65 7a 29 20 2d |ez = cei|l(bez) -|
|00003680| 20 31 2e 30 3b 0d 20 20 | 20 20 7d 0d 20 20 20 20 | 1.0;.  |  }.    |
|00003690| 65 6c 73 65 20 0d 20 20 | 20 20 7b 0d 20 20 20 20 |else .  |  {.    |
|000036a0| 62 73 7a 20 3d 20 63 65 | 69 6c 28 62 73 7a 29 20 |bsz = ce|il(bsz) |
|000036b0| 2d 20 31 2e 30 3b 0d 20 | 20 20 20 62 65 7a 20 3d |- 1.0;. |   bez =|
|000036c0| 20 66 6c 6f 6f 72 28 62 | 65 7a 29 3b 0d 20 20 20 | floor(b|ez);.   |
|000036d0| 20 7d 0d 0d 20 20 20 20 | 78 5f 73 69 7a 65 20 3d | }..    |x_size =|
|000036e0| 20 61 62 73 28 28 69 6e | 74 29 62 65 78 20 2d 20 | abs((in|t)bex - |
|000036f0| 28 69 6e 74 29 62 73 78 | 29 3b 0d 20 20 7a 5f 73 |(int)bsx|);.  z_s|
|00003700| 69 7a 65 20 3d 20 61 62 | 73 28 28 69 6e 74 29 62 |ize = ab|s((int)b|
|00003710| 65 7a 20 2d 20 28 69 6e | 74 29 62 73 7a 29 3b 0d |ez - (in|t)bsz);.|
|00003720| 0d 20 20 6c 65 6e 67 74 | 68 20 3d 20 78 5f 73 69 |.  lengt|h = x_si|
|00003730| 7a 65 20 2b 20 7a 5f 73 | 69 7a 65 3b 0d 0d 20 20 |ze + z_s|ize;..  |
|00003740| 63 75 72 72 20 3d 20 26 | 74 65 6d 70 31 3b 0d 20 |curr = &|temp1;. |
|00003750| 20 6e 65 78 74 20 3d 20 | 26 74 65 6d 70 32 3b 0d | next = |&temp2;.|
|00003760| 20 20 4d 61 6b 65 5f 56 | 65 63 74 6f 72 28 63 75 |  Make_V|ector(cu|
|00003770| 72 72 2c 20 78 2c 20 79 | 2c 20 7a 29 3b 0d 20 20 |rr, x, y|, z);.  |
|00003780| 74 20 3d 20 30 2e 30 3b | 0d 0d 20 20 69 66 28 58 |t = 0.0;|..  if(X|
|00003790| 5f 44 6f 6d 29 20 0d 20 | 20 20 20 7b 0d 20 20 20 |_Dom) . |   {.   |
|000037a0| 20 69 66 28 69 73 64 78 | 20 3e 3d 20 30 29 20 0d | if(isdx| >= 0) .|
|000037b0| 20 20 20 20 20 20 7b 0d | 20 20 20 20 20 20 69 78 |      {.|      ix|
|000037c0| 20 3d 20 28 69 6e 74 29 | 66 6c 6f 6f 72 28 73 78 | = (int)|floor(sx|
|000037d0| 2a 49 6e 76 5f 42 6c 6b | 5f 53 69 7a 65 29 3b 0d |*Inv_Blk|_Size);.|
|000037e0| 20 20 20 20 20 20 74 6e | 65 61 72 20 3d 20 42 6c |      tn|ear = Bl|
|000037f0| 6f 63 6b 5f 53 69 7a 65 | 2a 28 69 78 2b 31 29 20 |ock_Size|*(ix+1) |
|00003800| 2d 20 73 78 3b 0d 0d 20 | 20 20 20 20 20 69 66 20 |- sx;.. |     if |
|00003810| 28 69 73 64 7a 20 3e 3d | 20 30 29 20 0d 20 20 20 |(isdz >=| 0) .   |
|00003820| 20 20 20 20 20 7b 0d 20 | 20 20 20 20 20 20 20 69 |     {. |       i|
|00003830| 7a 20 3d 20 28 69 6e 74 | 29 66 6c 6f 6f 72 28 73 |z = (int|)floor(s|
|00003840| 7a 2a 49 6e 76 5f 42 6c | 6b 5f 53 69 7a 65 29 3b |z*Inv_Bl|k_Size);|
|00003850| 0d 20 20 20 20 20 20 20 | 20 74 66 61 72 20 3d 20 |.       | tfar = |
|00003860| 47 64 78 20 2a 20 28 42 | 6c 6f 63 6b 5f 53 69 7a |Gdx * (B|lock_Siz|
|00003870| 65 2a 28 69 7a 2b 31 29 | 20 2d 20 73 7a 29 3b 0d |e*(iz+1)| - sz);.|
|00003880| 20 20 20 20 20 20 20 20 | 7d 0d 20 20 20 20 20 20 |        |}.      |
|00003890| 65 6c 73 65 20 0d 20 20 | 20 20 20 20 20 20 7b 0d |else .  |      {.|
|000038a0| 20 20 20 20 20 20 20 20 | 69 7a 20 3d 20 28 69 6e |        |iz = (in|
|000038b0| 74 29 63 65 69 6c 28 73 | 7a 2a 49 6e 76 5f 42 6c |t)ceil(s|z*Inv_Bl|
|000038c0| 6b 5f 53 69 7a 65 29 20 | 2d 20 31 3b 0d 20 20 20 |k_Size) |- 1;.   |
|000038d0| 20 20 20 20 20 74 66 61 | 72 20 3d 20 47 64 78 20 |     tfa|r = Gdx |
|000038e0| 2a 20 28 73 7a 20 2d 20 | 42 6c 6f 63 6b 5f 53 69 |* (sz - |Block_Si|
|000038f0| 7a 65 2a 28 69 7a 29 29 | 3b 0d 20 20 20 20 20 20 |ze*(iz))|;.      |
|00003900| 20 20 7d 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |  }     |        |
|00003910| 20 20 20 20 20 20 20 20 | 20 20 20 0d 20 20 20 20 |        |   .    |
|00003920| 20 20 66 6f 72 20 28 69 | 20 3d 20 30 3b 20 69 20 |  for (i| = 0; i |
|00003930| 3c 20 6c 65 6e 67 74 68 | 3b 20 69 2b 2b 29 20 0d |< length|; i++) .|
|00003940| 20 20 20 20 20 20 20 20 | 7b 0d 20 20 20 20 20 20 |        |{.      |
|00003950| 20 20 69 66 28 74 66 61 | 72 20 3c 20 74 6e 65 61 |  if(tfa|r < tnea|
|00003960| 72 29 20 0d 20 20 20 20 | 20 20 20 20 20 20 7b 0d |r) .    |      {.|
|00003970| 20 20 20 20 20 20 20 20 | 20 20 74 20 3d 20 74 66 |        |  t = tf|
|00003980| 61 72 3b 0d 20 20 20 20 | 20 20 20 20 20 20 78 20 |ar;.    |      x |
|00003990| 3d 20 73 78 20 2b 20 74 | 3b 0d 20 20 20 20 20 20 |= sx + t|;.      |
|000039a0| 20 20 20 20 79 20 3d 20 | 73 79 20 2b 20 4d 79 78 |    y = |sy + Myx|
|000039b0| 20 2a 20 74 3b 0d 20 20 | 20 20 20 20 20 20 20 20 | * t;.  |        |
|000039c0| 7a 20 3d 20 73 7a 20 2b | 20 4d 7a 78 20 2a 20 74 |z = sz +| Mzx * t|
|000039d0| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 4d 61 6b 65 |;.      |    Make|
|000039e0| 5f 56 65 63 74 6f 72 28 | 6e 65 78 74 2c 20 78 2c |_Vector(|next, x,|
|000039f0| 20 79 2c 20 7a 29 3b 0d | 20 20 20 20 20 20 20 20 | y, z);.|        |
|00003a00| 20 20 69 66 28 49 6e 74 | 65 72 73 65 63 74 5f 53 |  if(Int|ersect_S|
|00003a10| 75 62 5f 42 6c 6f 63 6b | 28 26 28 48 5f 46 69 65 |ub_Block|(&(H_Fie|
|00003a20| 6c 64 2d 3e 42 6c 6f 63 | 6b 5b 69 78 5d 5b 69 7a |ld->Bloc|k[ix][iz|
|00003a30| 5d 29 2c 52 61 79 2c 48 | 5f 46 69 65 6c 64 2c 63 |]),Ray,H|_Field,c|
|00003a40| 75 72 72 2c 6e 65 78 74 | 29 29 0d 20 20 20 20 20 |urr,next|)).     |
|00003a50| 20 20 20 20 20 20 20 72 | 65 74 75 72 6e 28 54 52 |       r|eturn(TR|
|00003a60| 55 45 29 3b 0d 20 20 20 | 20 20 20 20 20 20 20 74 |UE);.   |       t|
|00003a70| 65 6d 70 20 3d 20 63 75 | 72 72 3b 0d 20 20 20 20 |emp = cu|rr;.    |
|00003a80| 20 20 20 20 20 20 63 75 | 72 72 20 3d 20 6e 65 78 |      cu|rr = nex|
|00003a90| 74 3b 0d 20 20 20 20 20 | 20 20 20 20 20 6e 65 78 |t;.     |     nex|
|00003aa0| 74 20 3d 20 74 65 6d 70 | 3b 0d 20 20 20 20 20 20 |t = temp|;.      |
|00003ab0| 20 20 20 20 69 7a 20 2b | 3d 20 69 73 64 7a 3b 0d |    iz +|= isdz;.|
|00003ac0| 20 20 20 20 20 20 20 20 | 20 20 69 66 20 28 69 73 |        |  if (is|
|00003ad0| 64 7a 20 3e 3d 20 30 29 | 20 0d 20 20 20 20 20 20 |dz >= 0)| .      |
|00003ae0| 20 20 20 20 20 20 74 66 | 61 72 20 3d 20 47 64 78 |      tf|ar = Gdx|
|00003af0| 20 2a 20 28 42 6c 6f 63 | 6b 5f 53 69 7a 65 2a 28 | * (Bloc|k_Size*(|
|00003b00| 69 7a 2b 31 29 20 2d 20 | 73 7a 29 3b 0d 20 20 20 |iz+1) - |sz);.   |
|00003b10| 20 20 20 20 20 20 20 65 | 6c 73 65 20 0d 20 20 20 |       e|lse .   |
|00003b20| 20 20 20 20 20 20 20 20 | 20 74 66 61 72 20 3d 20 |        | tfar = |
|00003b30| 47 64 78 20 2a 20 28 73 | 7a 20 2d 20 42 6c 6f 63 |Gdx * (s|z - Bloc|
|00003b40| 6b 5f 53 69 7a 65 2a 28 | 69 7a 29 29 3b 0d 20 20 |k_Size*(|iz));.  |
|00003b50| 20 20 20 20 20 20 20 20 | 7d 0d 20 20 20 20 20 20 |        |}.      |
|00003b60| 20 20 65 6c 73 65 20 0d | 20 20 20 20 20 20 20 20 |  else .|        |
|00003b70| 20 20 7b 0d 20 20 20 20 | 20 20 20 20 20 20 74 20 |  {.    |      t |
|00003b80| 3d 20 74 6e 65 61 72 3b | 0d 20 20 20 20 20 20 20 |= tnear;|.       |
|00003b90| 20 20 20 78 20 3d 20 73 | 78 20 2b 20 74 3b 0d 20 |   x = s|x + t;. |
|00003ba0| 20 20 20 20 20 20 20 20 | 20 79 20 3d 20 73 79 20 |        | y = sy |
|00003bb0| 2b 20 4d 79 78 20 2a 20 | 74 3b 0d 20 20 20 20 20 |+ Myx * |t;.     |
|00003bc0| 20 20 20 20 20 7a 20 3d | 20 73 7a 20 2b 20 4d 7a |     z =| sz + Mz|
|00003bd0| 78 20 2a 20 74 3b 0d 20 | 20 20 20 20 20 20 20 20 |x * t;. |        |
|00003be0| 20 4d 61 6b 65 5f 56 65 | 63 74 6f 72 28 6e 65 78 | Make_Ve|ctor(nex|
|00003bf0| 74 2c 20 78 2c 20 79 2c | 20 7a 29 3b 0d 20 20 20 |t, x, y,| z);.   |
|00003c00| 20 20 20 20 20 20 20 69 | 66 28 49 6e 74 65 72 73 |       i|f(Inters|
|00003c10| 65 63 74 5f 53 75 62 5f | 42 6c 6f 63 6b 28 26 28 |ect_Sub_|Block(&(|
|00003c20| 48 5f 46 69 65 6c 64 2d | 3e 42 6c 6f 63 6b 5b 69 |H_Field-|>Block[i|
|00003c30| 78 5d 5b 69 7a 5d 29 2c | 52 61 79 2c 48 5f 46 69 |x][iz]),|Ray,H_Fi|
|00003c40| 65 6c 64 2c 63 75 72 72 | 2c 6e 65 78 74 29 29 0d |eld,curr|,next)).|
|00003c50| 20 20 20 20 20 20 20 20 | 20 20 20 20 72 65 74 75 |        |    retu|
|00003c60| 72 6e 28 54 52 55 45 29 | 3b 0d 20 20 20 20 20 20 |rn(TRUE)|;.      |
|00003c70| 20 20 20 20 74 65 6d 70 | 20 3d 20 63 75 72 72 3b |    temp| = curr;|
|00003c80| 0d 20 20 20 20 20 20 20 | 20 20 20 63 75 72 72 20 |.       |   curr |
|00003c90| 3d 20 6e 65 78 74 3b 0d | 20 20 20 20 20 20 20 20 |= next;.|        |
|00003ca0| 20 20 6e 65 78 74 20 3d | 20 74 65 6d 70 3b 0d 20 |  next =| temp;. |
|00003cb0| 20 20 20 20 20 20 20 20 | 20 69 78 2b 2b 3b 0d 20 |        | ix++;. |
|00003cc0| 20 20 20 20 20 20 20 20 | 20 74 6e 65 61 72 20 3d |        | tnear =|
|00003cd0| 20 42 6c 6f 63 6b 5f 53 | 69 7a 65 2a 28 69 78 2b | Block_S|ize*(ix+|
|00003ce0| 31 29 20 2d 20 73 78 3b | 0d 20 20 20 20 20 20 20 |1) - sx;|.       |
|00003cf0| 20 20 20 7d 0d 20 20 20 | 20 20 20 20 20 7d 0d 20 |   }.   |     }. |
|00003d00| 20 20 20 20 20 7d 0d 20 | 20 20 20 65 6c 73 65 20 |     }. |   else |
|00003d10| 0d 20 20 20 20 20 20 7b | 20 20 20 20 20 20 20 20 |.      {|        |
|00003d20| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003d30| 20 20 0d 20 20 20 20 20 | 20 69 78 20 3d 20 28 69 |  .     | ix = (i|
|00003d40| 6e 74 29 63 65 69 6c 28 | 73 78 2a 49 6e 76 5f 42 |nt)ceil(|sx*Inv_B|
|00003d50| 6c 6b 5f 53 69 7a 65 29 | 20 2d 20 31 3b 0d 20 20 |lk_Size)| - 1;.  |
|00003d60| 20 20 20 20 74 6e 65 61 | 72 20 3d 20 73 78 20 2d |    tnea|r = sx -|
|00003d70| 20 42 6c 6f 63 6b 5f 53 | 69 7a 65 2a 28 69 78 29 | Block_S|ize*(ix)|
|00003d80| 3b 0d 0d 20 20 20 20 20 | 20 20 20 69 66 20 28 69 |;..     |   if (i|
|00003d90| 73 64 7a 20 3e 3d 20 30 | 29 20 0d 20 20 20 20 20 |sdz >= 0|) .     |
|00003da0| 20 20 20 7b 0d 20 20 20 | 20 20 20 20 20 69 7a 20 |   {.   |     iz |
|00003db0| 3d 20 28 69 6e 74 29 66 | 6c 6f 6f 72 28 73 7a 2a |= (int)f|loor(sz*|
|00003dc0| 49 6e 76 5f 42 6c 6b 5f | 53 69 7a 65 29 3b 0d 20 |Inv_Blk_|Size);. |
|00003dd0| 20 20 20 20 20 20 20 74 | 66 61 72 20 3d 20 47 64 |       t|far = Gd|
|00003de0| 78 20 2a 20 28 42 6c 6f | 63 6b 5f 53 69 7a 65 2a |x * (Blo|ck_Size*|
|00003df0| 28 69 7a 2b 31 29 20 2d | 20 73 7a 29 3b 0d 20 20 |(iz+1) -| sz);.  |
|00003e00| 20 20 20 20 20 20 7d 0d | 20 20 20 20 20 20 20 20 |      }.|        |
|00003e10| 65 6c 73 65 20 0d 20 20 | 20 20 20 20 20 20 7b 0d |else .  |      {.|
|00003e20| 20 20 20 20 20 20 20 20 | 69 7a 20 3d 20 28 69 6e |        |iz = (in|
|00003e30| 74 29 63 65 69 6c 28 73 | 7a 2a 49 6e 76 5f 42 6c |t)ceil(s|z*Inv_Bl|
|00003e40| 6b 5f 53 69 7a 65 29 20 | 2d 20 31 3b 0d 20 20 20 |k_Size) |- 1;.   |
|00003e50| 20 20 20 20 20 74 66 61 | 72 20 3d 20 47 64 78 20 |     tfa|r = Gdx |
|00003e60| 2a 20 28 73 7a 20 2d 20 | 42 6c 6f 63 6b 5f 53 69 |* (sz - |Block_Si|
|00003e70| 7a 65 2a 28 69 7a 29 29 | 3b 0d 20 20 20 20 20 20 |ze*(iz))|;.      |
|00003e80| 20 20 7d 0d 0d 20 20 20 | 20 20 20 20 20 66 6f 72 |  }..   |     for|
|00003e90| 20 28 69 20 3d 20 30 3b | 20 69 20 3c 20 6c 65 6e | (i = 0;| i < len|
|00003ea0| 67 74 68 3b 20 69 2b 2b | 29 20 0d 20 20 20 20 20 |gth; i++|) .     |
|00003eb0| 20 20 20 7b 0d 20 20 20 | 20 20 20 20 20 69 66 28 |   {.   |     if(|
|00003ec0| 74 66 61 72 20 3c 20 74 | 6e 65 61 72 29 20 0d 20 |tfar < t|near) . |
|00003ed0| 20 20 20 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |        | {.     |
|00003ee0| 20 20 20 20 20 74 20 3d | 20 74 66 61 72 3b 0d 20 |     t =| tfar;. |
|00003ef0| 20 20 20 20 20 20 20 20 | 20 78 20 3d 20 73 78 20 |        | x = sx |
|00003f00| 2d 20 74 3b 0d 20 20 20 | 20 20 20 20 20 20 20 79 |- t;.   |       y|
|00003f10| 20 3d 20 73 79 20 2d 20 | 4d 79 78 20 2a 20 74 3b | = sy - |Myx * t;|
|00003f20| 0d 20 20 20 20 20 20 20 | 20 20 20 7a 20 3d 20 73 |.       |   z = s|
|00003f30| 7a 20 2d 20 4d 7a 78 20 | 2a 20 74 3b 0d 20 20 20 |z - Mzx |* t;.   |
|00003f40| 20 20 20 20 20 20 20 4d | 61 6b 65 5f 56 65 63 74 |       M|ake_Vect|
|00003f50| 6f 72 28 6e 65 78 74 2c | 20 78 2c 20 79 2c 20 7a |or(next,| x, y, z|
|00003f60| 29 3b 0d 20 20 20 20 20 | 20 20 20 20 20 69 66 28 |);.     |     if(|
|00003f70| 49 6e 74 65 72 73 65 63 | 74 5f 53 75 62 5f 42 6c |Intersec|t_Sub_Bl|
|00003f80| 6f 63 6b 28 26 28 48 5f | 46 69 65 6c 64 2d 3e 42 |ock(&(H_|Field->B|
|00003f90| 6c 6f 63 6b 5b 69 78 5d | 5b 69 7a 5d 29 2c 52 61 |lock[ix]|[iz]),Ra|
|00003fa0| 79 2c 48 5f 46 69 65 6c | 64 2c 63 75 72 72 2c 6e |y,H_Fiel|d,curr,n|
|00003fb0| 65 78 74 29 29 0d 20 20 | 20 20 20 20 20 20 20 20 |ext)).  |        |
|00003fc0| 20 20 72 65 74 75 72 6e | 28 54 52 55 45 29 3b 0d |  return|(TRUE);.|
|00003fd0| 20 20 20 20 20 20 20 20 | 20 20 74 65 6d 70 20 3d |        |  temp =|
|00003fe0| 20 63 75 72 72 3b 0d 20 | 20 20 20 20 20 20 20 20 | curr;. |        |
|00003ff0| 20 63 75 72 72 20 3d 20 | 6e 65 78 74 3b 0d 20 20 | curr = |next;.  |
|00004000| 20 20 20 20 20 20 20 20 | 6e 65 78 74 20 3d 20 74 |        |next = t|
|00004010| 65 6d 70 3b 0d 20 20 20 | 20 20 20 20 20 20 20 69 |emp;.   |       i|
|00004020| 7a 20 2b 3d 20 69 73 64 | 7a 3b 0d 20 20 20 20 20 |z += isd|z;.     |
|00004030| 20 20 20 20 20 69 66 20 | 28 69 73 64 7a 20 3e 3d |     if |(isdz >=|
|00004040| 20 30 29 20 0d 20 20 20 | 20 20 20 20 20 20 20 20 | 0) .   |        |
|00004050| 20 74 66 61 72 20 3d 20 | 47 64 78 20 2a 20 28 42 | tfar = |Gdx * (B|
|00004060| 6c 6f 63 6b 5f 53 69 7a | 65 2a 28 69 7a 2b 31 29 |lock_Siz|e*(iz+1)|
|00004070| 20 2d 20 73 7a 29 3b 0d | 20 20 20 20 20 20 20 20 | - sz);.|        |
|00004080| 20 20 65 6c 73 65 20 0d | 20 20 20 20 20 20 20 20 |  else .|        |
|00004090| 20 20 20 20 74 66 61 72 | 20 3d 20 47 64 78 20 2a |    tfar| = Gdx *|
|000040a0| 20 28 73 7a 20 2d 20 42 | 6c 6f 63 6b 5f 53 69 7a | (sz - B|lock_Siz|
|000040b0| 65 2a 28 69 7a 29 29 3b | 0d 20 20 20 20 20 20 20 |e*(iz));|.       |
|000040c0| 20 20 20 7d 0d 20 20 20 | 20 20 20 20 20 65 6c 73 |   }.   |     els|
|000040d0| 65 20 0d 20 20 20 20 20 | 20 20 20 20 20 7b 0d 20 |e .     |     {. |
|000040e0| 20 20 20 20 20 20 20 20 | 20 74 20 3d 20 74 6e 65 |        | t = tne|
|000040f0| 61 72 3b 0d 20 20 20 20 | 20 20 20 20 20 20 78 20 |ar;.    |      x |
|00004100| 3d 20 73 78 20 2d 20 74 | 3b 0d 20 20 20 20 20 20 |= sx - t|;.      |
|00004110| 20 20 20 20 79 20 3d 20 | 73 79 20 2d 20 4d 79 78 |    y = |sy - Myx|
|00004120| 20 2a 20 74 3b 0d 20 20 | 20 20 20 20 20 20 20 20 | * t;.  |        |
|00004130| 7a 20 3d 20 73 7a 20 2d | 20 4d 7a 78 20 2a 20 74 |z = sz -| Mzx * t|
|00004140| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 4d 61 6b 65 |;.      |    Make|
|00004150| 5f 56 65 63 74 6f 72 28 | 6e 65 78 74 2c 20 78 2c |_Vector(|next, x,|
|00004160| 20 79 2c 20 7a 29 3b 0d | 20 20 20 20 20 20 20 20 | y, z);.|        |
|00004170| 20 20 69 66 28 49 6e 74 | 65 72 73 65 63 74 5f 53 |  if(Int|ersect_S|
|00004180| 75 62 5f 42 6c 6f 63 6b | 28 26 28 48 5f 46 69 65 |ub_Block|(&(H_Fie|
|00004190| 6c 64 2d 3e 42 6c 6f 63 | 6b 5b 69 78 5d 5b 69 7a |ld->Bloc|k[ix][iz|
|000041a0| 5d 29 2c 52 61 79 2c 48 | 5f 46 69 65 6c 64 2c 63 |]),Ray,H|_Field,c|
|000041b0| 75 72 72 2c 6e 65 78 74 | 29 29 0d 20 20 20 20 20 |urr,next|)).     |
|000041c0| 20 20 20 20 20 20 20 72 | 65 74 75 72 6e 28 54 52 |       r|eturn(TR|
|000041d0| 55 45 29 3b 0d 20 20 20 | 20 20 20 20 20 20 20 74 |UE);.   |       t|
|000041e0| 65 6d 70 20 3d 20 63 75 | 72 72 3b 0d 20 20 20 20 |emp = cu|rr;.    |
|000041f0| 20 20 20 20 20 20 63 75 | 72 72 20 3d 20 6e 65 78 |      cu|rr = nex|
|00004200| 74 3b 0d 20 20 20 20 20 | 20 20 20 20 20 6e 65 78 |t;.     |     nex|
|00004210| 74 20 3d 20 74 65 6d 70 | 3b 0d 20 20 20 20 20 20 |t = temp|;.      |
|00004220| 20 20 20 20 69 78 2d 2d | 3b 0d 20 20 20 20 20 20 |    ix--|;.      |
|00004230| 20 20 20 20 74 6e 65 61 | 72 20 3d 20 73 78 20 2d |    tnea|r = sx -|
|00004240| 20 42 6c 6f 63 6b 5f 53 | 69 7a 65 2a 28 69 78 29 | Block_S|ize*(ix)|
|00004250| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 7d 0d 20 20 |;.      |    }.  |
|00004260| 20 20 20 20 20 20 7d 0d | 20 20 20 20 20 20 7d 20 |      }.|      } |
|00004270| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004280| 20 20 20 20 20 20 20 20 | 20 20 20 20 0d 20 20 20 |        |    .   |
|00004290| 20 7d 0d 20 20 65 6c 73 | 65 20 0d 20 20 20 20 7b | }.  els|e .    {|
|000042a0| 0d 20 20 20 20 69 66 28 | 69 73 64 7a 20 3e 3d 20 |.    if(|isdz >= |
|000042b0| 30 29 20 0d 20 20 20 20 | 20 20 7b 0d 20 20 20 20 |0) .    |  {.    |
|000042c0| 20 20 69 7a 20 3d 20 28 | 69 6e 74 29 66 6c 6f 6f |  iz = (|int)floo|
|000042d0| 72 28 73 7a 2a 49 6e 76 | 5f 42 6c 6b 5f 53 69 7a |r(sz*Inv|_Blk_Siz|
|000042e0| 65 29 3b 0d 20 20 20 20 | 20 20 74 6e 65 61 72 20 |e);.    |  tnear |
|000042f0| 3d 20 42 6c 6f 63 6b 5f | 53 69 7a 65 2a 28 69 7a |= Block_|Size*(iz|
|00004300| 2b 31 29 20 2d 20 73 7a | 3b 0d 0d 20 20 20 20 20 |+1) - sz|;..     |
|00004310| 20 69 66 20 28 69 73 64 | 78 20 3e 3d 20 30 29 20 | if (isd|x >= 0) |
|00004320| 0d 20 20 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |.       | {.     |
|00004330| 20 20 20 69 78 20 3d 20 | 28 69 6e 74 29 66 6c 6f |   ix = |(int)flo|
|00004340| 6f 72 28 73 78 2a 49 6e | 76 5f 42 6c 6b 5f 53 69 |or(sx*In|v_Blk_Si|
|00004350| 7a 65 29 3b 20 20 20 20 | 20 20 20 0d 20 20 20 20 |ze);    |   .    |
|00004360| 20 20 20 20 74 66 61 72 | 20 3d 20 47 64 7a 20 2a |    tfar| = Gdz *|
|00004370| 20 28 42 6c 6f 63 6b 5f | 53 69 7a 65 2a 28 69 78 | (Block_|Size*(ix|
|00004380| 2b 31 29 20 2d 20 73 78 | 29 3b 0d 20 20 20 20 20 |+1) - sx|);.     |
|00004390| 20 20 20 7d 0d 20 20 20 | 20 20 20 65 6c 73 65 20 |   }.   |   else |
|000043a0| 0d 20 20 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |.       | {.     |
|000043b0| 20 20 20 69 78 20 3d 20 | 28 69 6e 74 29 63 65 69 |   ix = |(int)cei|
|000043c0| 6c 28 73 78 2a 49 6e 76 | 5f 42 6c 6b 5f 53 69 7a |l(sx*Inv|_Blk_Siz|
|000043d0| 65 29 20 2d 20 31 3b 0d | 20 20 20 20 20 20 20 20 |e) - 1;.|        |
|000043e0| 74 66 61 72 20 3d 20 47 | 64 7a 20 2a 20 28 73 78 |tfar = G|dz * (sx|
|000043f0| 20 2d 20 42 6c 6f 63 6b | 5f 53 69 7a 65 2a 28 69 | - Block|_Size*(i|
|00004400| 78 29 29 3b 0d 20 20 20 | 20 20 20 20 20 7d 0d 20 |x));.   |     }. |
|00004410| 20 20 20 20 20 66 6f 72 | 20 28 69 20 3d 20 30 3b |     for| (i = 0;|
|00004420| 20 69 20 3c 20 6c 65 6e | 67 74 68 3b 20 69 2b 2b | i < len|gth; i++|
|00004430| 29 20 0d 20 20 20 20 20 | 20 20 20 7b 0d 20 20 20 |) .     |   {.   |
|00004440| 20 20 20 20 20 69 66 28 | 74 66 61 72 20 3c 20 74 |     if(|tfar < t|
|00004450| 6e 65 61 72 29 20 0d 20 | 20 20 20 20 20 20 20 20 |near) . |        |
|00004460| 20 7b 0d 20 20 20 20 20 | 20 20 20 20 20 74 20 3d | {.     |     t =|
|00004470| 20 74 66 61 72 3b 0d 20 | 20 20 20 20 20 20 20 20 | tfar;. |        |
|00004480| 20 7a 20 3d 20 73 7a 20 | 2b 20 74 3b 0d 20 20 20 | z = sz |+ t;.   |
|00004490| 20 20 20 20 20 20 20 79 | 20 3d 20 73 79 20 2b 20 |       y| = sy + |
|000044a0| 4d 79 7a 20 2a 20 74 3b | 0d 20 20 20 20 20 20 20 |Myz * t;|.       |
|000044b0| 20 20 20 78 20 3d 20 73 | 78 20 2b 20 4d 78 7a 20 |   x = s|x + Mxz |
|000044c0| 2a 20 74 3b 0d 20 20 20 | 20 20 20 20 20 20 20 4d |* t;.   |       M|
|000044d0| 61 6b 65 5f 56 65 63 74 | 6f 72 28 6e 65 78 74 2c |ake_Vect|or(next,|
|000044e0| 20 78 2c 20 79 2c 20 7a | 29 3b 0d 20 20 20 20 20 | x, y, z|);.     |
|000044f0| 20 20 20 20 20 69 66 28 | 49 6e 74 65 72 73 65 63 |     if(|Intersec|
|00004500| 74 5f 53 75 62 5f 42 6c | 6f 63 6b 28 26 28 48 5f |t_Sub_Bl|ock(&(H_|
|00004510| 46 69 65 6c 64 2d 3e 42 | 6c 6f 63 6b 5b 69 78 5d |Field->B|lock[ix]|
|00004520| 5b 69 7a 5d 29 2c 52 61 | 79 2c 48 5f 46 69 65 6c |[iz]),Ra|y,H_Fiel|
|00004530| 64 2c 63 75 72 72 2c 6e | 65 78 74 29 29 0d 20 20 |d,curr,n|ext)).  |
|00004540| 20 20 20 20 20 20 20 20 | 20 20 72 65 74 75 72 6e |        |  return|
|00004550| 28 54 52 55 45 29 3b 0d | 20 20 20 20 20 20 20 20 |(TRUE);.|        |
|00004560| 20 20 74 65 6d 70 20 3d | 20 63 75 72 72 3b 0d 20 |  temp =| curr;. |
|00004570| 20 20 20 20 20 20 20 20 | 20 63 75 72 72 20 3d 20 |        | curr = |
|00004580| 6e 65 78 74 3b 0d 20 20 | 20 20 20 20 20 20 20 20 |next;.  |        |
|00004590| 6e 65 78 74 20 3d 20 74 | 65 6d 70 3b 0d 20 20 20 |next = t|emp;.   |
|000045a0| 20 20 20 20 20 20 20 69 | 78 20 2b 3d 20 69 73 64 |       i|x += isd|
|000045b0| 78 3b 0d 20 20 20 20 20 | 20 20 20 20 20 69 66 20 |x;.     |     if |
|000045c0| 28 69 73 64 78 20 3e 3d | 20 30 29 20 0d 20 20 20 |(isdx >=| 0) .   |
|000045d0| 20 20 20 20 20 20 20 20 | 20 74 66 61 72 20 3d 20 |        | tfar = |
|000045e0| 47 64 7a 20 2a 20 28 42 | 6c 6f 63 6b 5f 53 69 7a |Gdz * (B|lock_Siz|
|000045f0| 65 2a 28 69 78 2b 31 29 | 20 2d 20 73 78 29 3b 0d |e*(ix+1)| - sx);.|
|00004600| 20 20 20 20 20 20 20 20 | 20 20 65 6c 73 65 20 0d |        |  else .|
|00004610| 20 20 20 20 20 20 20 20 | 20 20 20 20 74 66 61 72 |        |    tfar|
|00004620| 20 3d 20 47 64 7a 20 2a | 20 28 73 78 20 2d 20 42 | = Gdz *| (sx - B|
|00004630| 6c 6f 63 6b 5f 53 69 7a | 65 2a 28 69 78 29 29 3b |lock_Siz|e*(ix));|
|00004640| 0d 20 20 20 20 20 20 20 | 20 20 20 7d 0d 20 20 20 |.       |   }.   |
|00004650| 20 20 20 20 20 65 6c 73 | 65 20 0d 20 20 20 20 20 |     els|e .     |
|00004660| 20 20 20 20 20 7b 0d 20 | 20 20 20 20 20 20 20 20 |     {. |        |
|00004670| 20 74 20 3d 20 74 6e 65 | 61 72 3b 0d 20 20 20 20 | t = tne|ar;.    |
|00004680| 20 20 20 20 20 20 7a 20 | 3d 20 73 7a 20 2b 20 74 |      z |= sz + t|
|00004690| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 79 20 3d 20 |;.      |    y = |
|000046a0| 73 79 20 2b 20 4d 79 7a | 20 2a 20 74 3b 0d 20 20 |sy + Myz| * t;.  |
|000046b0| 20 20 20 20 20 20 20 20 | 78 20 3d 20 73 78 20 2b |        |x = sx +|
|000046c0| 20 4d 78 7a 20 2a 20 74 | 3b 0d 20 20 20 20 20 20 | Mxz * t|;.      |
|000046d0| 20 20 20 20 4d 61 6b 65 | 5f 56 65 63 74 6f 72 28 |    Make|_Vector(|
|000046e0| 6e 65 78 74 2c 20 78 2c | 20 79 2c 20 7a 29 3b 0d |next, x,| y, z);.|
|000046f0| 20 20 20 20 20 20 20 20 | 20 20 69 66 28 49 6e 74 |        |  if(Int|
|00004700| 65 72 73 65 63 74 5f 53 | 75 62 5f 42 6c 6f 63 6b |ersect_S|ub_Block|
|00004710| 28 26 28 48 5f 46 69 65 | 6c 64 2d 3e 42 6c 6f 63 |(&(H_Fie|ld->Bloc|
|00004720| 6b 5b 69 78 5d 5b 69 7a | 5d 29 2c 52 61 79 2c 48 |k[ix][iz|]),Ray,H|
|00004730| 5f 46 69 65 6c 64 2c 63 | 75 72 72 2c 6e 65 78 74 |_Field,c|urr,next|
|00004740| 29 29 0d 20 20 20 20 20 | 20 20 20 20 20 20 20 72 |)).     |       r|
|00004750| 65 74 75 72 6e 28 54 52 | 55 45 29 3b 0d 20 20 20 |eturn(TR|UE);.   |
|00004760| 20 20 20 20 20 20 20 74 | 65 6d 70 20 3d 20 63 75 |       t|emp = cu|
|00004770| 72 72 3b 0d 20 20 20 20 | 20 20 20 20 20 20 63 75 |rr;.    |      cu|
|00004780| 72 72 20 3d 20 6e 65 78 | 74 3b 0d 20 20 20 20 20 |rr = nex|t;.     |
|00004790| 20 20 20 20 20 6e 65 78 | 74 20 3d 20 74 65 6d 70 |     nex|t = temp|
|000047a0| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 69 7a 2b 2b |;.      |    iz++|
|000047b0| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 74 6e 65 61 |;.      |    tnea|
|000047c0| 72 20 3d 20 42 6c 6f 63 | 6b 5f 53 69 7a 65 2a 28 |r = Bloc|k_Size*(|
|000047d0| 69 7a 2b 31 29 20 2d 20 | 73 7a 3b 0d 20 20 20 20 |iz+1) - |sz;.    |
|000047e0| 20 20 20 20 20 20 7d 0d | 20 20 20 20 20 20 20 20 |      }.|        |
|000047f0| 7d 0d 20 20 20 20 20 20 | 7d 0d 20 20 20 20 65 6c |}.      |}.    el|
|00004800| 73 65 20 0d 20 20 20 20 | 20 20 7b 20 20 20 20 20 |se .    |  {     |
|00004810| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004820| 20 20 20 20 20 0d 20 20 | 20 20 20 20 69 7a 20 3d |     .  |    iz =|
|00004830| 20 28 69 6e 74 29 63 65 | 69 6c 28 73 7a 2a 49 6e | (int)ce|il(sz*In|
|00004840| 76 5f 42 6c 6b 5f 53 69 | 7a 65 29 20 2d 20 31 3b |v_Blk_Si|ze) - 1;|
|00004850| 0d 20 20 20 20 20 20 74 | 6e 65 61 72 20 3d 20 73 |.      t|near = s|
|00004860| 7a 20 2d 20 42 6c 6f 63 | 6b 5f 53 69 7a 65 2a 28 |z - Bloc|k_Size*(|
|00004870| 69 7a 29 3b 0d 0d 20 20 | 20 20 20 20 20 20 69 66 |iz);..  |      if|
|00004880| 20 28 69 73 64 78 20 3e | 3d 20 30 29 20 0d 20 20 | (isdx >|= 0) .  |
|00004890| 20 20 20 20 20 20 7b 0d | 20 20 20 20 20 20 20 20 |      {.|        |
|000048a0| 69 78 20 3d 20 28 69 6e | 74 29 66 6c 6f 6f 72 28 |ix = (in|t)floor(|
|000048b0| 73 78 2a 49 6e 76 5f 42 | 6c 6b 5f 53 69 7a 65 29 |sx*Inv_B|lk_Size)|
|000048c0| 3b 0d 20 20 20 20 20 20 | 20 20 74 66 61 72 20 3d |;.      |  tfar =|
|000048d0| 20 47 64 7a 20 2a 20 28 | 42 6c 6f 63 6b 5f 53 69 | Gdz * (|Block_Si|
|000048e0| 7a 65 2a 28 69 78 2b 31 | 29 20 2d 20 73 78 29 3b |ze*(ix+1|) - sx);|
|000048f0| 0d 20 20 20 20 20 20 20 | 20 7d 0d 20 20 20 20 20 |.       | }.     |
|00004900| 20 20 20 65 6c 73 65 20 | 0d 20 20 20 20 20 20 20 |   else |.       |
|00004910| 20 7b 0d 20 20 20 20 20 | 20 20 20 69 78 20 3d 20 | {.     |   ix = |
|00004920| 28 69 6e 74 29 63 65 69 | 6c 28 73 78 2a 49 6e 76 |(int)cei|l(sx*Inv|
|00004930| 5f 42 6c 6b 5f 53 69 7a | 65 29 20 2d 20 31 3b 0d |_Blk_Siz|e) - 1;.|
|00004940| 20 20 20 20 20 20 20 20 | 74 66 61 72 20 3d 20 47 |        |tfar = G|
|00004950| 64 7a 20 2a 20 28 73 78 | 20 2d 20 42 6c 6f 63 6b |dz * (sx| - Block|
|00004960| 5f 53 69 7a 65 2a 28 69 | 78 29 29 3b 0d 20 20 20 |_Size*(i|x));.   |
|00004970| 20 20 20 20 20 7d 20 20 | 20 20 20 20 20 20 20 20 |     }  |        |
|00004980| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004990| 20 20 20 20 20 20 20 20 | 20 0d 20 20 20 20 20 20 |        | .      |
|000049a0| 66 6f 72 20 28 69 20 3d | 20 30 3b 20 69 20 3c 20 |for (i =| 0; i < |
|000049b0| 6c 65 6e 67 74 68 3b 20 | 69 2b 2b 29 20 0d 20 20 |length; |i++) .  |
|000049c0| 20 20 20 20 20 20 7b 0d | 20 20 20 20 20 20 20 20 |      {.|        |
|000049d0| 69 66 28 74 66 61 72 20 | 3c 20 74 6e 65 61 72 29 |if(tfar |< tnear)|
|000049e0| 20 0d 20 20 20 20 20 20 | 20 20 20 20 7b 0d 20 20 | .      |    {.  |
|000049f0| 20 20 20 20 20 20 20 20 | 74 20 3d 20 74 66 61 72 |        |t = tfar|
|00004a00| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 7a 20 3d 20 |;.      |    z = |
|00004a10| 73 7a 20 2d 20 74 3b 0d | 20 20 20 20 20 20 20 20 |sz - t;.|        |
|00004a20| 20 20 79 20 3d 20 73 79 | 20 2d 20 4d 79 7a 20 2a |  y = sy| - Myz *|
|00004a30| 20 74 3b 0d 20 20 20 20 | 20 20 20 20 20 20 78 20 | t;.    |      x |
|00004a40| 3d 20 73 78 20 2d 20 4d | 78 7a 20 2a 20 74 3b 0d |= sx - M|xz * t;.|
|00004a50| 20 20 20 20 20 20 20 20 | 20 20 4d 61 6b 65 5f 56 |        |  Make_V|
|00004a60| 65 63 74 6f 72 28 6e 65 | 78 74 2c 20 78 2c 20 79 |ector(ne|xt, x, y|
|00004a70| 2c 20 7a 29 3b 0d 20 20 | 20 20 20 20 20 20 20 20 |, z);.  |        |
|00004a80| 69 66 28 49 6e 74 65 72 | 73 65 63 74 5f 53 75 62 |if(Inter|sect_Sub|
|00004a90| 5f 42 6c 6f 63 6b 28 26 | 28 48 5f 46 69 65 6c 64 |_Block(&|(H_Field|
|00004aa0| 2d 3e 42 6c 6f 63 6b 5b | 69 78 5d 5b 69 7a 5d 29 |->Block[|ix][iz])|
|00004ab0| 2c 52 61 79 2c 48 5f 46 | 69 65 6c 64 2c 63 75 72 |,Ray,H_F|ield,cur|
|00004ac0| 72 2c 6e 65 78 74 29 29 | 0d 20 20 20 20 20 20 20 |r,next))|.       |
|00004ad0| 20 20 20 20 20 72 65 74 | 75 72 6e 28 54 52 55 45 |     ret|urn(TRUE|
|00004ae0| 29 3b 0d 20 20 20 20 20 | 20 20 20 20 20 74 65 6d |);.     |     tem|
|00004af0| 70 20 3d 20 63 75 72 72 | 3b 0d 20 20 20 20 20 20 |p = curr|;.      |
|00004b00| 20 20 20 20 63 75 72 72 | 20 3d 20 6e 65 78 74 3b |    curr| = next;|
|00004b10| 0d 20 20 20 20 20 20 20 | 20 20 20 6e 65 78 74 20 |.       |   next |
|00004b20| 3d 20 74 65 6d 70 3b 0d | 20 20 20 20 20 20 20 20 |= temp;.|        |
|00004b30| 20 20 69 78 20 2b 3d 20 | 69 73 64 78 3b 0d 20 20 |  ix += |isdx;.  |
|00004b40| 20 20 20 20 20 20 20 20 | 69 66 20 28 69 73 64 78 |        |if (isdx|
|00004b50| 20 3e 3d 20 30 29 20 0d | 20 20 20 20 20 20 20 20 | >= 0) .|        |
|00004b60| 20 20 20 20 74 66 61 72 | 20 3d 20 47 64 7a 20 2a |    tfar| = Gdz *|
|00004b70| 20 28 42 6c 6f 63 6b 5f | 53 69 7a 65 2a 28 69 78 | (Block_|Size*(ix|
|00004b80| 2b 31 29 20 2d 20 73 78 | 29 3b 0d 20 20 20 20 20 |+1) - sx|);.     |
|00004b90| 20 20 20 20 20 65 6c 73 | 65 0d 20 20 20 20 20 20 |     els|e.      |
|00004ba0| 20 20 20 20 20 20 74 66 | 61 72 20 3d 20 47 64 7a |      tf|ar = Gdz|
|00004bb0| 20 2a 20 28 73 78 20 2d | 20 42 6c 6f 63 6b 5f 53 | * (sx -| Block_S|
|00004bc0| 69 7a 65 2a 28 69 78 29 | 29 3b 0d 20 20 20 20 20 |ize*(ix)|);.     |
|00004bd0| 20 20 20 20 20 7d 0d 20 | 20 20 20 20 20 20 20 65 |     }. |       e|
|00004be0| 6c 73 65 20 0d 20 20 20 | 20 20 20 20 20 20 20 7b |lse .   |       {|
|00004bf0| 0d 20 20 20 20 20 20 20 | 20 20 20 74 20 3d 20 74 |.       |   t = t|
|00004c00| 6e 65 61 72 3b 0d 20 20 | 20 20 20 20 20 20 20 20 |near;.  |        |
|00004c10| 7a 20 3d 20 73 7a 20 2d | 20 74 3b 0d 20 20 20 20 |z = sz -| t;.    |
|00004c20| 20 20 20 20 20 20 79 20 | 3d 20 73 79 20 2d 20 4d |      y |= sy - M|
|00004c30| 79 7a 20 2a 20 74 3b 0d | 20 20 20 20 20 20 20 20 |yz * t;.|        |
|00004c40| 20 20 78 20 3d 20 73 78 | 20 2d 20 4d 78 7a 20 2a |  x = sx| - Mxz *|
|00004c50| 20 74 3b 0d 20 20 20 20 | 20 20 20 20 20 20 4d 61 | t;.    |      Ma|
|00004c60| 6b 65 5f 56 65 63 74 6f | 72 28 6e 65 78 74 2c 20 |ke_Vecto|r(next, |
|00004c70| 78 2c 20 79 2c 20 7a 29 | 3b 0d 20 20 20 20 20 20 |x, y, z)|;.      |
|00004c80| 20 20 20 20 69 66 28 49 | 6e 74 65 72 73 65 63 74 |    if(I|ntersect|
|00004c90| 5f 53 75 62 5f 42 6c 6f | 63 6b 28 26 28 48 5f 46 |_Sub_Blo|ck(&(H_F|
|00004ca0| 69 65 6c 64 2d 3e 42 6c | 6f 63 6b 5b 69 78 5d 5b |ield->Bl|ock[ix][|
|00004cb0| 69 7a 5d 29 2c 52 61 79 | 2c 48 5f 46 69 65 6c 64 |iz]),Ray|,H_Field|
|00004cc0| 2c 63 75 72 72 2c 6e 65 | 78 74 29 29 0d 20 20 20 |,curr,ne|xt)).   |
|00004cd0| 20 20 20 20 20 20 20 20 | 20 72 65 74 75 72 6e 28 |        | return(|
|00004ce0| 54 52 55 45 29 3b 0d 20 | 20 20 20 20 20 20 20 20 |TRUE);. |        |
|00004cf0| 20 74 65 6d 70 20 3d 20 | 63 75 72 72 3b 0d 20 20 | temp = |curr;.  |
|00004d00| 20 20 20 20 20 20 20 20 | 63 75 72 72 20 3d 20 6e |        |curr = n|
|00004d10| 65 78 74 3b 0d 20 20 20 | 20 20 20 20 20 20 20 6e |ext;.   |       n|
|00004d20| 65 78 74 20 3d 20 74 65 | 6d 70 3b 0d 20 20 20 20 |ext = te|mp;.    |
|00004d30| 20 20 20 20 20 20 69 7a | 2d 2d 3b 0d 20 20 20 20 |      iz|--;.    |
|00004d40| 20 20 20 20 20 20 74 6e | 65 61 72 20 3d 20 73 7a |      tn|ear = sz|
|00004d50| 20 2d 20 42 6c 6f 63 6b | 5f 53 69 7a 65 2a 69 7a | - Block|_Size*iz|
|00004d60| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 7d 0d 20 20 |;.      |    }.  |
|00004d70| 20 20 20 20 20 20 7d 0d | 20 20 20 20 20 20 7d 20 |      }.|      } |
|00004d80| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004d90| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004da0| 20 20 20 20 0d 20 20 20 | 20 7d 0d 20 20 4d 61 6b |    .   | }.  Mak|
|00004db0| 65 5f 56 65 63 74 6f 72 | 28 6e 65 78 74 2c 65 78 |e_Vector|(next,ex|
|00004dc0| 2c 65 79 2c 65 7a 29 3b | 0d 20 20 69 66 28 69 73 |,ey,ez);|.  if(is|
|00004dd0| 64 78 20 3e 3d 20 30 29 | 0d 20 20 20 20 69 78 20 |dx >= 0)|.    ix |
|00004de0| 3d 20 28 69 6e 74 29 63 | 65 69 6c 28 65 78 2a 49 |= (int)c|eil(ex*I|
|00004df0| 6e 76 5f 42 6c 6b 5f 53 | 69 7a 65 29 20 2d 20 31 |nv_Blk_S|ize) - 1|
|00004e00| 3b 0d 20 20 65 6c 73 65 | 0d 20 20 20 20 69 78 20 |;.  else|.    ix |
|00004e10| 3d 20 28 69 6e 74 29 66 | 6c 6f 6f 72 28 65 78 2a |= (int)f|loor(ex*|
|00004e20| 49 6e 76 5f 42 6c 6b 5f | 53 69 7a 65 29 3b 0d 20 |Inv_Blk_|Size);. |
|00004e30| 20 69 66 28 69 73 64 7a | 20 3e 3d 20 30 29 0d 20 | if(isdz| >= 0). |
|00004e40| 20 20 20 69 7a 20 3d 20 | 28 69 6e 74 29 63 65 69 |   iz = |(int)cei|
|00004e50| 6c 28 65 7a 2a 49 6e 76 | 5f 42 6c 6b 5f 53 69 7a |l(ez*Inv|_Blk_Siz|
|00004e60| 65 29 20 2d 20 31 3b 0d | 20 20 65 6c 73 65 0d 20 |e) - 1;.|  else. |
|00004e70| 20 20 20 69 7a 20 3d 20 | 28 69 6e 74 29 66 6c 6f |   iz = |(int)flo|
|00004e80| 6f 72 28 65 7a 2a 49 6e | 76 5f 42 6c 6b 5f 53 69 |or(ez*In|v_Blk_Si|
|00004e90| 7a 65 29 3b 0d 20 20 69 | 66 28 49 6e 74 65 72 73 |ze);.  i|f(Inters|
|00004ea0| 65 63 74 5f 53 75 62 5f | 42 6c 6f 63 6b 28 26 28 |ect_Sub_|Block(&(|
|00004eb0| 48 5f 46 69 65 6c 64 2d | 3e 42 6c 6f 63 6b 5b 69 |H_Field-|>Block[i|
|00004ec0| 78 5d 5b 69 7a 5d 29 2c | 52 61 79 2c 48 5f 46 69 |x][iz]),|Ray,H_Fi|
|00004ed0| 65 6c 64 2c 63 75 72 72 | 2c 6e 65 78 74 29 29 0d |eld,curr|,next)).|
|00004ee0| 20 20 20 20 72 65 74 75 | 72 6e 28 54 52 55 45 29 |    retu|rn(TRUE)|
|00004ef0| 3b 0d 20 20 72 65 74 75 | 72 6e 20 28 46 41 4c 53 |;.  retu|rn (FALS|
|00004f00| 45 29 3b 0d 20 20 7d 0d | 0d 73 74 61 74 69 63 20 |E);.  }.|.static |
|00004f10| 69 6e 74 20 49 6e 74 65 | 72 73 65 63 74 5f 43 73 |int Inte|rsect_Cs|
|00004f20| 67 5f 48 66 5f 4e 6f 64 | 65 28 52 61 79 2c 20 48 |g_Hf_Nod|e(Ray, H|
|00004f30| 5f 46 69 65 6c 64 2c 20 | 73 74 61 72 74 2c 20 65 |_Field, |start, e|
|00004f40| 6e 64 29 0d 52 41 59 20 | 2a 52 61 79 3b 0d 48 45 |nd).RAY |*Ray;.HE|
|00004f50| 49 47 48 54 5f 46 49 45 | 4c 44 20 2a 48 5f 46 69 |IGHT_FIE|LD *H_Fi|
|00004f60| 65 6c 64 3b 0d 56 45 43 | 54 4f 52 20 2a 73 74 61 |eld;.VEC|TOR *sta|
|00004f70| 72 74 2c 20 2a 65 6e 64 | 3b 0d 20 20 7b 0d 20 20 |rt, *end|;.  {.  |
|00004f80| 56 45 43 54 4f 52 20 2a | 63 75 72 72 2c 20 2a 6e |VECTOR *|curr, *n|
|00004f90| 65 78 74 2c 20 2a 74 65 | 6d 70 2c 20 74 65 6d 70 |ext, *te|mp, temp|
|00004fa0| 31 2c 20 74 65 6d 70 32 | 3b 0d 20 20 44 42 4c 20 |1, temp2|;.  DBL |
|00004fb0| 73 78 2c 20 73 79 2c 20 | 73 7a 2c 20 65 78 2c 20 |sx, sy, |sz, ex, |
|00004fc0| 65 79 2c 20 65 7a 2c 20 | 78 2c 20 79 2c 20 7a 3b |ey, ez, |x, y, z;|
|00004fd0| 0d 20 20 44 42 4c 20 74 | 6e 65 61 72 2c 20 74 66 |.  DBL t|near, tf|
|00004fe0| 61 72 2c 20 74 2c 20 62 | 73 78 2c 20 62 73 7a 2c |ar, t, b|sx, bsz,|
|00004ff0| 20 62 65 78 2c 20 62 65 | 7a 3b 0d 20 20 69 6e 74 | bex, be|z;.  int|
|00005000| 20 69 78 2c 20 69 7a 2c | 20 78 5f 73 69 7a 65 2c | ix, iz,| x_size,|
|00005010| 20 7a 5f 73 69 7a 65 2c | 20 6c 65 6e 67 74 68 2c | z_size,| length,|
|00005020| 20 69 2c 20 72 65 74 76 | 61 6c 3b 0d 0d 20 20 72 | i, retv|al;..  r|
|00005030| 65 74 76 61 6c 20 3d 20 | 46 41 4c 53 45 3b 0d 20 |etval = |FALSE;. |
|00005040| 20 78 20 3d 20 73 78 20 | 3d 20 73 74 61 72 74 2d | x = sx |= start-|
|00005050| 3e 78 3b 0d 20 20 79 20 | 3d 20 73 79 20 3d 20 73 |>x;.  y |= sy = s|
|00005060| 74 61 72 74 2d 3e 79 3b | 0d 20 20 7a 20 3d 20 73 |tart->y;|.  z = s|
|00005070| 7a 20 3d 20 73 74 61 72 | 74 2d 3e 7a 3b 0d 20 20 |z = star|t->z;.  |
|00005080| 65 78 20 3d 20 65 6e 64 | 2d 3e 78 3b 0d 20 20 65 |ex = end|->x;.  e|
|00005090| 79 20 3d 20 65 6e 64 2d | 3e 79 3b 0d 20 20 65 7a |y = end-|>y;.  ez|
|000050a0| 20 3d 20 65 6e 64 2d 3e | 7a 3b 0d 0d 20 20 62 73 | = end->|z;..  bs|
|000050b0| 78 20 3d 20 73 78 20 2a | 20 49 6e 76 5f 42 6c 6b |x = sx *| Inv_Blk|
|000050c0| 5f 53 69 7a 65 3b 0d 20 | 20 62 73 7a 20 3d 20 73 |_Size;. | bsz = s|
|000050d0| 7a 20 2a 20 49 6e 76 5f | 42 6c 6b 5f 53 69 7a 65 |z * Inv_|Blk_Size|
|000050e0| 3b 0d 20 20 62 65 78 20 | 3d 20 65 78 20 2a 20 49 |;.  bex |= ex * I|
|000050f0| 6e 76 5f 42 6c 6b 5f 53 | 69 7a 65 3b 0d 20 20 62 |nv_Blk_S|ize;.  b|
|00005100| 65 7a 20 3d 20 65 7a 20 | 2a 20 49 6e 76 5f 42 6c |ez = ez |* Inv_Bl|
|00005110| 6b 5f 53 69 7a 65 3b 0d | 0d 20 20 69 66 20 28 69 |k_Size;.|.  if (i|
|00005120| 73 64 78 20 3e 3d 20 30 | 29 20 0d 20 20 20 20 7b |sdx >= 0|) .    {|
|00005130| 0d 20 20 20 20 62 73 78 | 20 3d 20 66 6c 6f 6f 72 |.    bsx| = floor|
|00005140| 28 62 73 78 29 3b 0d 20 | 20 20 20 62 65 78 20 3d |(bsx);. |   bex =|
|00005150| 20 63 65 69 6c 28 62 65 | 78 29 20 2d 20 31 2e 30 | ceil(be|x) - 1.0|
|00005160| 3b 0d 20 20 20 20 7d 0d | 20 20 65 6c 73 65 20 0d |;.    }.|  else .|
|00005170| 20 20 20 20 7b 0d 20 20 | 20 20 62 73 78 20 3d 20 |    {.  |  bsx = |
|00005180| 63 65 69 6c 28 62 73 78 | 29 20 2d 20 31 2e 30 3b |ceil(bsx|) - 1.0;|
|00005190| 0d 20 20 20 20 62 65 78 | 20 3d 20 66 6c 6f 6f 72 |.    bex| = floor|
|000051a0| 28 62 65 78 29 3b 0d 20 | 20 20 20 7d 0d 0d 20 20 |(bex);. |   }..  |
|000051b0| 20 20 69 66 20 28 69 73 | 64 7a 20 3e 3d 20 30 29 |  if (is|dz >= 0)|
|000051c0| 20 0d 20 20 20 20 7b 0d | 20 20 20 20 62 73 7a 20 | .    {.|    bsz |
|000051d0| 3d 20 66 6c 6f 6f 72 28 | 62 73 7a 29 3b 0d 20 20 |= floor(|bsz);.  |
|000051e0| 20 20 62 65 7a 20 3d 20 | 63 65 69 6c 28 62 65 7a |  bez = |ceil(bez|
|000051f0| 29 20 2d 20 31 2e 30 3b | 0d 20 20 20 20 7d 0d 20 |) - 1.0;|.    }. |
|00005200| 20 20 20 65 6c 73 65 20 | 0d 20 20 20 20 7b 0d 20 |   else |.    {. |
|00005210| 20 20 20 62 73 7a 20 3d | 20 63 65 69 6c 28 62 73 |   bsz =| ceil(bs|
|00005220| 7a 29 20 2d 20 31 2e 30 | 3b 0d 20 20 20 20 62 65 |z) - 1.0|;.    be|
|00005230| 7a 20 3d 20 66 6c 6f 6f | 72 28 62 65 7a 29 3b 0d |z = floo|r(bez);.|
|00005240| 20 20 20 20 7d 0d 0d 20 | 20 20 20 78 5f 73 69 7a |    }.. |   x_siz|
|00005250| 65 20 3d 20 61 62 73 28 | 28 69 6e 74 29 62 65 78 |e = abs(|(int)bex|
|00005260| 20 2d 20 28 69 6e 74 29 | 62 73 78 29 3b 0d 20 20 | - (int)|bsx);.  |
|00005270| 7a 5f 73 69 7a 65 20 3d | 20 61 62 73 28 28 69 6e |z_size =| abs((in|
|00005280| 74 29 62 65 7a 20 2d 20 | 28 69 6e 74 29 62 73 7a |t)bez - |(int)bsz|
|00005290| 29 3b 0d 0d 20 20 6c 65 | 6e 67 74 68 20 3d 20 78 |);..  le|ngth = x|
|000052a0| 5f 73 69 7a 65 20 2b 20 | 7a 5f 73 69 7a 65 3b 0d |_size + |z_size;.|
|000052b0| 0d 20 20 63 75 72 72 20 | 3d 20 26 74 65 6d 70 31 |.  curr |= &temp1|
|000052c0| 3b 0d 20 20 6e 65 78 74 | 20 3d 20 26 74 65 6d 70 |;.  next| = &temp|
|000052d0| 32 3b 0d 20 20 4d 61 6b | 65 5f 56 65 63 74 6f 72 |2;.  Mak|e_Vector|
|000052e0| 28 63 75 72 72 2c 20 78 | 2c 20 79 2c 20 7a 29 3b |(curr, x|, y, z);|
|000052f0| 0d 20 20 74 20 3d 20 30 | 2e 30 3b 0d 0d 20 20 69 |.  t = 0|.0;..  i|
|00005300| 66 28 58 5f 44 6f 6d 29 | 20 0d 20 20 20 20 7b 0d |f(X_Dom)| .    {.|
|00005310| 20 20 20 20 69 66 28 69 | 73 64 78 20 3e 3d 20 30 |    if(i|sdx >= 0|
|00005320| 29 20 0d 20 20 20 20 20 | 20 7b 0d 20 20 20 20 20 |) .     | {.     |
|00005330| 20 69 78 20 3d 20 28 69 | 6e 74 29 66 6c 6f 6f 72 | ix = (i|nt)floor|
|00005340| 28 73 78 2a 49 6e 76 5f | 42 6c 6b 5f 53 69 7a 65 |(sx*Inv_|Blk_Size|
|00005350| 29 3b 0d 20 20 20 20 20 | 20 74 6e 65 61 72 20 3d |);.     | tnear =|
|00005360| 20 42 6c 6f 63 6b 5f 53 | 69 7a 65 2a 28 69 78 2b | Block_S|ize*(ix+|
|00005370| 31 29 20 2d 20 73 78 3b | 0d 0d 20 20 20 20 20 20 |1) - sx;|..      |
|00005380| 69 66 20 28 69 73 64 7a | 20 3e 3d 20 30 29 20 0d |if (isdz| >= 0) .|
|00005390| 20 20 20 20 20 20 20 20 | 7b 0d 20 20 20 20 20 20 |        |{.      |
|000053a0| 20 20 69 7a 20 3d 20 28 | 69 6e 74 29 66 6c 6f 6f |  iz = (|int)floo|
|000053b0| 72 28 73 7a 2a 49 6e 76 | 5f 42 6c 6b 5f 53 69 7a |r(sz*Inv|_Blk_Siz|
|000053c0| 65 29 3b 0d 20 20 20 20 | 20 20 20 20 74 66 61 72 |e);.    |    tfar|
|000053d0| 20 3d 20 47 64 78 20 2a | 20 28 42 6c 6f 63 6b 5f | = Gdx *| (Block_|
|000053e0| 53 69 7a 65 2a 28 69 7a | 2b 31 29 20 2d 20 73 7a |Size*(iz|+1) - sz|
|000053f0| 29 3b 0d 20 20 20 20 20 | 20 20 20 7d 0d 20 20 20 |);.     |   }.   |
|00005400| 20 20 20 65 6c 73 65 20 | 0d 20 20 20 20 20 20 20 |   else |.       |
|00005410| 20 7b 0d 20 20 20 20 20 | 20 20 20 69 7a 20 3d 20 | {.     |   iz = |
|00005420| 28 69 6e 74 29 63 65 69 | 6c 28 73 7a 2a 49 6e 76 |(int)cei|l(sz*Inv|
|00005430| 5f 42 6c 6b 5f 53 69 7a | 65 29 20 2d 20 31 3b 0d |_Blk_Siz|e) - 1;.|
|00005440| 20 20 20 20 20 20 20 20 | 74 66 61 72 20 3d 20 47 |        |tfar = G|
|00005450| 64 78 20 2a 20 28 73 7a | 20 2d 20 42 6c 6f 63 6b |dx * (sz| - Block|
|00005460| 5f 53 69 7a 65 2a 28 69 | 7a 29 29 3b 0d 20 20 20 |_Size*(i|z));.   |
|00005470| 20 20 20 20 20 7d 20 20 | 20 20 20 20 20 20 20 20 |     }  |        |
|00005480| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 0d 20 |        |      . |
|00005490| 20 20 20 20 20 66 6f 72 | 20 28 69 20 3d 20 30 3b |     for| (i = 0;|
|000054a0| 20 69 20 3c 20 6c 65 6e | 67 74 68 3b 20 69 2b 2b | i < len|gth; i++|
|000054b0| 29 20 0d 20 20 20 20 20 | 20 20 20 7b 0d 20 20 20 |) .     |   {.   |
|000054c0| 20 20 20 20 20 69 66 28 | 74 66 61 72 20 3c 20 74 |     if(|tfar < t|
|000054d0| 6e 65 61 72 29 20 0d 20 | 20 20 20 20 20 20 20 20 |near) . |        |
|000054e0| 20 7b 0d 20 20 20 20 20 | 20 20 20 20 20 74 20 3d | {.     |     t =|
|000054f0| 20 74 66 61 72 3b 0d 20 | 20 20 20 20 20 20 20 20 | tfar;. |        |
|00005500| 20 78 20 3d 20 73 78 20 | 2b 20 74 3b 0d 20 20 20 | x = sx |+ t;.   |
|00005510| 20 20 20 20 20 20 20 79 | 20 3d 20 73 79 20 2b 20 |       y| = sy + |
|00005520| 4d 79 78 20 2a 20 74 3b | 0d 20 20 20 20 20 20 20 |Myx * t;|.       |
|00005530| 20 20 20 7a 20 3d 20 73 | 7a 20 2b 20 4d 7a 78 20 |   z = s|z + Mzx |
|00005540| 2a 20 74 3b 0d 20 20 20 | 20 20 20 20 20 20 20 4d |* t;.   |       M|
|00005550| 61 6b 65 5f 56 65 63 74 | 6f 72 28 6e 65 78 74 2c |ake_Vect|or(next,|
|00005560| 20 78 2c 20 79 2c 20 7a | 29 3b 0d 20 20 20 20 20 | x, y, z|);.     |
|00005570| 20 20 20 20 20 69 66 28 | 49 6e 74 65 72 73 65 63 |     if(|Intersec|
|00005580| 74 5f 43 73 67 5f 53 75 | 62 5f 42 6c 6f 63 6b 28 |t_Csg_Su|b_Block(|
|00005590| 26 28 48 5f 46 69 65 6c | 64 2d 3e 42 6c 6f 63 6b |&(H_Fiel|d->Block|
|000055a0| 5b 69 78 5d 5b 69 7a 5d | 29 2c 52 61 79 2c 48 5f |[ix][iz]|),Ray,H_|
|000055b0| 46 69 65 6c 64 2c 63 75 | 72 72 2c 6e 65 78 74 29 |Field,cu|rr,next)|
|000055c0| 29 0d 20 20 20 20 20 20 | 20 20 20 20 20 20 72 65 |).      |      re|
|000055d0| 74 76 61 6c 20 3d 20 54 | 52 55 45 3b 0d 20 20 20 |tval = T|RUE;.   |
|000055e0| 20 20 20 20 20 20 20 74 | 65 6d 70 20 3d 20 63 75 |       t|emp = cu|
|000055f0| 72 72 3b 0d 20 20 20 20 | 20 20 20 20 20 20 63 75 |rr;.    |      cu|
|00005600| 72 72 20 3d 20 6e 65 78 | 74 3b 0d 20 20 20 20 20 |rr = nex|t;.     |
|00005610| 20 20 20 20 20 6e 65 78 | 74 20 3d 20 74 65 6d 70 |     nex|t = temp|
|00005620| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 69 7a 20 2b |;.      |    iz +|
|00005630| 3d 20 69 73 64 7a 3b 0d | 20 20 20 20 20 20 20 20 |= isdz;.|        |
|00005640| 20 20 69 66 20 28 69 73 | 64 7a 20 3e 3d 20 30 29 |  if (is|dz >= 0)|
|00005650| 20 0d 20 20 20 20 20 20 | 20 20 20 20 20 20 74 66 | .      |      tf|
|00005660| 61 72 20 3d 20 47 64 78 | 20 2a 20 28 42 6c 6f 63 |ar = Gdx| * (Bloc|
|00005670| 6b 5f 53 69 7a 65 2a 28 | 69 7a 2b 31 29 20 2d 20 |k_Size*(|iz+1) - |
|00005680| 73 7a 29 3b 0d 20 20 20 | 20 20 20 20 20 20 20 65 |sz);.   |       e|
|00005690| 6c 73 65 20 0d 20 20 20 | 20 20 20 20 20 20 20 20 |lse .   |        |
|000056a0| 20 74 66 61 72 20 3d 20 | 47 64 78 20 2a 20 28 73 | tfar = |Gdx * (s|
|000056b0| 7a 20 2d 20 42 6c 6f 63 | 6b 5f 53 69 7a 65 2a 28 |z - Bloc|k_Size*(|
|000056c0| 69 7a 29 29 3b 0d 20 20 | 20 20 20 20 20 20 20 20 |iz));.  |        |
|000056d0| 7d 0d 20 20 20 20 20 20 | 20 20 65 6c 73 65 20 0d |}.      |  else .|
|000056e0| 20 20 20 20 20 20 20 20 | 20 20 7b 0d 20 20 20 20 |        |  {.    |
|000056f0| 20 20 20 20 20 20 74 20 | 3d 20 74 6e 65 61 72 3b |      t |= tnear;|
|00005700| 0d 20 20 20 20 20 20 20 | 20 20 20 78 20 3d 20 73 |.       |   x = s|
|00005710| 78 20 2b 20 74 3b 0d 20 | 20 20 20 20 20 20 20 20 |x + t;. |        |
|00005720| 20 79 20 3d 20 73 79 20 | 2b 20 4d 79 78 20 2a 20 | y = sy |+ Myx * |
|00005730| 74 3b 0d 20 20 20 20 20 | 20 20 20 20 20 7a 20 3d |t;.     |     z =|
|00005740| 20 73 7a 20 2b 20 4d 7a | 78 20 2a 20 74 3b 0d 20 | sz + Mz|x * t;. |
|00005750| 20 20 20 20 20 20 20 20 | 20 4d 61 6b 65 5f 56 65 |        | Make_Ve|
|00005760| 63 74 6f 72 28 6e 65 78 | 74 2c 20 78 2c 20 79 2c |ctor(nex|t, x, y,|
|00005770| 20 7a 29 3b 0d 20 20 20 | 20 20 20 20 20 20 20 69 | z);.   |       i|
|00005780| 66 28 49 6e 74 65 72 73 | 65 63 74 5f 43 73 67 5f |f(Inters|ect_Csg_|
|00005790| 53 75 62 5f 42 6c 6f 63 | 6b 28 26 28 48 5f 46 69 |Sub_Bloc|k(&(H_Fi|
|000057a0| 65 6c 64 2d 3e 42 6c 6f | 63 6b 5b 69 78 5d 5b 69 |eld->Blo|ck[ix][i|
|000057b0| 7a 5d 29 2c 52 61 79 2c | 48 5f 46 69 65 6c 64 2c |z]),Ray,|H_Field,|
|000057c0| 63 75 72 72 2c 6e 65 78 | 74 29 29 0d 20 20 20 20 |curr,nex|t)).    |
|000057d0| 20 20 20 20 20 20 20 20 | 72 65 74 76 61 6c 20 3d |        |retval =|
|000057e0| 20 54 52 55 45 3b 0d 20 | 20 20 20 20 20 20 20 20 | TRUE;. |        |
|000057f0| 20 74 65 6d 70 20 3d 20 | 63 75 72 72 3b 0d 20 20 | temp = |curr;.  |
|00005800| 20 20 20 20 20 20 20 20 | 63 75 72 72 20 3d 20 6e |        |curr = n|
|00005810| 65 78 74 3b 0d 20 20 20 | 20 20 20 20 20 20 20 6e |ext;.   |       n|
|00005820| 65 78 74 20 3d 20 74 65 | 6d 70 3b 0d 20 20 20 20 |ext = te|mp;.    |
|00005830| 20 20 20 20 20 20 69 78 | 2b 2b 3b 0d 20 20 20 20 |      ix|++;.    |
|00005840| 20 20 20 20 20 20 74 6e | 65 61 72 20 3d 20 42 6c |      tn|ear = Bl|
|00005850| 6f 63 6b 5f 53 69 7a 65 | 2a 28 69 78 2b 31 29 20 |ock_Size|*(ix+1) |
|00005860| 2d 20 73 78 3b 0d 20 20 | 20 20 20 20 20 20 20 20 |- sx;.  |        |
|00005870| 7d 0d 20 20 20 20 20 20 | 20 20 7d 0d 20 20 20 20 |}.      |  }.    |
|00005880| 20 20 7d 0d 20 20 20 20 | 65 6c 73 65 20 0d 20 20 |  }.    |else .  |
|00005890| 20 20 20 20 7b 20 20 20 | 20 20 20 20 20 20 20 20 |    {   |        |
|000058a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 0d |        |       .|
|000058b0| 20 20 20 20 20 20 69 78 | 20 3d 20 28 69 6e 74 29 |      ix| = (int)|
|000058c0| 63 65 69 6c 28 73 78 2a | 49 6e 76 5f 42 6c 6b 5f |ceil(sx*|Inv_Blk_|
|000058d0| 53 69 7a 65 29 20 2d 20 | 31 3b 0d 20 20 20 20 20 |Size) - |1;.     |
|000058e0| 20 74 6e 65 61 72 20 3d | 20 73 78 20 2d 20 42 6c | tnear =| sx - Bl|
|000058f0| 6f 63 6b 5f 53 69 7a 65 | 2a 28 69 78 29 3b 0d 0d |ock_Size|*(ix);..|
|00005900| 20 20 20 20 20 20 20 20 | 69 66 20 28 69 73 64 7a |        |if (isdz|
|00005910| 20 3e 3d 20 30 29 20 0d | 20 20 20 20 20 20 20 20 | >= 0) .|        |
|00005920| 7b 0d 20 20 20 20 20 20 | 20 20 69 7a 20 3d 20 28 |{.      |  iz = (|
|00005930| 69 6e 74 29 66 6c 6f 6f | 72 28 73 7a 2a 49 6e 76 |int)floo|r(sz*Inv|
|00005940| 5f 42 6c 6b 5f 53 69 7a | 65 29 3b 0d 20 20 20 20 |_Blk_Siz|e);.    |
|00005950| 20 20 20 20 74 66 61 72 | 20 3d 20 47 64 78 20 2a |    tfar| = Gdx *|
|00005960| 20 28 42 6c 6f 63 6b 5f | 53 69 7a 65 2a 28 69 7a | (Block_|Size*(iz|
|00005970| 2b 31 29 20 2d 20 73 7a | 29 3b 0d 20 20 20 20 20 |+1) - sz|);.     |
|00005980| 20 20 20 7d 0d 20 20 20 | 20 20 20 20 20 65 6c 73 |   }.   |     els|
|00005990| 65 20 0d 20 20 20 20 20 | 20 20 20 7b 0d 20 20 20 |e .     |   {.   |
|000059a0| 20 20 20 20 20 69 7a 20 | 3d 20 28 69 6e 74 29 63 |     iz |= (int)c|
|000059b0| 65 69 6c 28 73 7a 2a 49 | 6e 76 5f 42 6c 6b 5f 53 |eil(sz*I|nv_Blk_S|
|000059c0| 69 7a 65 29 20 2d 20 31 | 3b 0d 20 20 20 20 20 20 |ize) - 1|;.      |
|000059d0| 20 20 74 66 61 72 20 3d | 20 47 64 78 20 2a 20 28 |  tfar =| Gdx * (|
|000059e0| 73 7a 20 2d 20 42 6c 6f | 63 6b 5f 53 69 7a 65 2a |sz - Blo|ck_Size*|
|000059f0| 28 69 7a 29 29 3b 0d 20 | 20 20 20 20 20 20 20 7d |(iz));. |       }|
|00005a00| 0d 0d 20 20 20 20 20 20 | 20 20 66 6f 72 20 28 69 |..      |  for (i|
|00005a10| 20 3d 20 30 3b 20 69 20 | 3c 20 6c 65 6e 67 74 68 | = 0; i |< length|
|00005a20| 3b 20 69 2b 2b 29 20 0d | 20 20 20 20 20 20 20 20 |; i++) .|        |
|00005a30| 7b 0d 20 20 20 20 20 20 | 20 20 69 66 28 74 66 61 |{.      |  if(tfa|
|00005a40| 72 20 3c 20 74 6e 65 61 | 72 29 20 0d 20 20 20 20 |r < tnea|r) .    |
|00005a50| 20 20 20 20 20 20 7b 0d | 20 20 20 20 20 20 20 20 |      {.|        |
|00005a60| 20 20 74 20 3d 20 74 66 | 61 72 3b 0d 20 20 20 20 |  t = tf|ar;.    |
|00005a70| 20 20 20 20 20 20 78 20 | 3d 20 73 78 20 2d 20 74 |      x |= sx - t|
|00005a80| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 79 20 3d 20 |;.      |    y = |
|00005a90| 73 79 20 2d 20 4d 79 78 | 20 2a 20 74 3b 0d 20 20 |sy - Myx| * t;.  |
|00005aa0| 20 20 20 20 20 20 20 20 | 7a 20 3d 20 73 7a 20 2d |        |z = sz -|
|00005ab0| 20 4d 7a 78 20 2a 20 74 | 3b 0d 20 20 20 20 20 20 | Mzx * t|;.      |
|00005ac0| 20 20 20 20 4d 61 6b 65 | 5f 56 65 63 74 6f 72 28 |    Make|_Vector(|
|00005ad0| 6e 65 78 74 2c 20 78 2c | 20 79 2c 20 7a 29 3b 0d |next, x,| y, z);.|
|00005ae0| 20 20 20 20 20 20 20 20 | 20 20 69 66 28 49 6e 74 |        |  if(Int|
|00005af0| 65 72 73 65 63 74 5f 43 | 73 67 5f 53 75 62 5f 42 |ersect_C|sg_Sub_B|
|00005b00| 6c 6f 63 6b 28 26 28 48 | 5f 46 69 65 6c 64 2d 3e |lock(&(H|_Field->|
|00005b10| 42 6c 6f 63 6b 5b 69 78 | 5d 5b 69 7a 5d 29 2c 52 |Block[ix|][iz]),R|
|00005b20| 61 79 2c 48 5f 46 69 65 | 6c 64 2c 63 75 72 72 2c |ay,H_Fie|ld,curr,|
|00005b30| 6e 65 78 74 29 29 0d 20 | 20 20 20 20 20 20 20 20 |next)). |        |
|00005b40| 20 20 20 72 65 74 76 61 | 6c 20 3d 20 54 52 55 45 |   retva|l = TRUE|
|00005b50| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 74 65 6d 70 |;.      |    temp|
|00005b60| 20 3d 20 63 75 72 72 3b | 0d 20 20 20 20 20 20 20 | = curr;|.       |
|00005b70| 20 20 20 63 75 72 72 20 | 3d 20 6e 65 78 74 3b 0d |   curr |= next;.|
|00005b80| 20 20 20 20 20 20 20 20 | 20 20 6e 65 78 74 20 3d |        |  next =|
|00005b90| 20 74 65 6d 70 3b 0d 20 | 20 20 20 20 20 20 20 20 | temp;. |        |
|00005ba0| 20 69 7a 20 2b 3d 20 69 | 73 64 7a 3b 0d 20 20 20 | iz += i|sdz;.   |
|00005bb0| 20 20 20 20 20 20 20 69 | 66 20 28 69 73 64 7a 20 |       i|f (isdz |
|00005bc0| 3e 3d 20 30 29 20 0d 20 | 20 20 20 20 20 20 20 20 |>= 0) . |        |
|00005bd0| 20 20 20 74 66 61 72 20 | 3d 20 47 64 78 20 2a 20 |   tfar |= Gdx * |
|00005be0| 28 42 6c 6f 63 6b 5f 53 | 69 7a 65 2a 28 69 7a 2b |(Block_S|ize*(iz+|
|00005bf0| 31 29 20 2d 20 73 7a 29 | 3b 0d 20 20 20 20 20 20 |1) - sz)|;.      |
|00005c00| 20 20 20 20 65 6c 73 65 | 20 0d 20 20 20 20 20 20 |    else| .      |
|00005c10| 20 20 20 20 20 20 74 66 | 61 72 20 3d 20 47 64 78 |      tf|ar = Gdx|
|00005c20| 20 2a 20 28 73 7a 20 2d | 20 42 6c 6f 63 6b 5f 53 | * (sz -| Block_S|
|00005c30| 69 7a 65 2a 28 69 7a 29 | 29 3b 0d 20 20 20 20 20 |ize*(iz)|);.     |
|00005c40| 20 20 20 20 20 7d 0d 20 | 20 20 20 20 20 20 20 65 |     }. |       e|
|00005c50| 6c 73 65 20 0d 20 20 20 | 20 20 20 20 20 20 20 7b |lse .   |       {|
|00005c60| 0d 20 20 20 20 20 20 20 | 20 20 20 74 20 3d 20 74 |.       |   t = t|
|00005c70| 6e 65 61 72 3b 0d 20 20 | 20 20 20 20 20 20 20 20 |near;.  |        |
|00005c80| 78 20 3d 20 73 78 20 2d | 20 74 3b 0d 20 20 20 20 |x = sx -| t;.    |
|00005c90| 20 20 20 20 20 20 79 20 | 3d 20 73 79 20 2d 20 4d |      y |= sy - M|
|00005ca0| 79 78 20 2a 20 74 3b 0d | 20 20 20 20 20 20 20 20 |yx * t;.|        |
|00005cb0| 20 20 7a 20 3d 20 73 7a | 20 2d 20 4d 7a 78 20 2a |  z = sz| - Mzx *|
|00005cc0| 20 74 3b 0d 20 20 20 20 | 20 20 20 20 20 20 4d 61 | t;.    |      Ma|
|00005cd0| 6b 65 5f 56 65 63 74 6f | 72 28 6e 65 78 74 2c 20 |ke_Vecto|r(next, |
|00005ce0| 78 2c 20 79 2c 20 7a 29 | 3b 0d 20 20 20 20 20 20 |x, y, z)|;.      |
|00005cf0| 20 20 20 20 69 66 28 49 | 6e 74 65 72 73 65 63 74 |    if(I|ntersect|
|00005d00| 5f 43 73 67 5f 53 75 62 | 5f 42 6c 6f 63 6b 28 26 |_Csg_Sub|_Block(&|
|00005d10| 28 48 5f 46 69 65 6c 64 | 2d 3e 42 6c 6f 63 6b 5b |(H_Field|->Block[|
|00005d20| 69 78 5d 5b 69 7a 5d 29 | 2c 52 61 79 2c 48 5f 46 |ix][iz])|,Ray,H_F|
|00005d30| 69 65 6c 64 2c 63 75 72 | 72 2c 6e 65 78 74 29 29 |ield,cur|r,next))|
|00005d40| 0d 20 20 20 20 20 20 20 | 20 20 20 20 20 72 65 74 |.       |     ret|
|00005d50| 76 61 6c 20 3d 20 54 52 | 55 45 3b 0d 20 20 20 20 |val = TR|UE;.    |
|00005d60| 20 20 20 20 20 20 74 65 | 6d 70 20 3d 20 63 75 72 |      te|mp = cur|
|00005d70| 72 3b 0d 20 20 20 20 20 | 20 20 20 20 20 63 75 72 |r;.     |     cur|
|00005d80| 72 20 3d 20 6e 65 78 74 | 3b 0d 20 20 20 20 20 20 |r = next|;.      |
|00005d90| 20 20 20 20 6e 65 78 74 | 20 3d 20 74 65 6d 70 3b |    next| = temp;|
|00005da0| 0d 20 20 20 20 20 20 20 | 20 20 20 69 78 2d 2d 3b |.       |   ix--;|
|00005db0| 0d 20 20 20 20 20 20 20 | 20 20 20 74 6e 65 61 72 |.       |   tnear|
|00005dc0| 20 3d 20 73 78 20 2d 20 | 42 6c 6f 63 6b 5f 53 69 | = sx - |Block_Si|
|00005dd0| 7a 65 2a 28 69 78 29 3b | 0d 20 20 20 20 20 20 20 |ze*(ix);|.       |
|00005de0| 20 20 20 7d 0d 20 20 20 | 20 20 20 20 20 7d 0d 20 |   }.   |     }. |
|00005df0| 20 20 20 20 20 7d 20 20 | 20 20 20 20 20 20 20 20 |     }  |        |
|00005e00| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00005e10| 20 20 20 0d 20 20 20 20 | 7d 0d 20 20 65 6c 73 65 |   .    |}.  else|
|00005e20| 20 0d 20 20 20 20 7b 0d | 20 20 20 20 69 66 28 69 | .    {.|    if(i|
|00005e30| 73 64 7a 20 3e 3d 20 30 | 29 20 0d 20 20 20 20 20 |sdz >= 0|) .     |
|00005e40| 20 7b 0d 20 20 20 20 20 | 20 69 7a 20 3d 20 28 69 | {.     | iz = (i|
|00005e50| 6e 74 29 66 6c 6f 6f 72 | 28 73 7a 2a 49 6e 76 5f |nt)floor|(sz*Inv_|
|00005e60| 42 6c 6b 5f 53 69 7a 65 | 29 3b 0d 20 20 20 20 20 |Blk_Size|);.     |
|00005e70| 20 74 6e 65 61 72 20 3d | 20 42 6c 6f 63 6b 5f 53 | tnear =| Block_S|
|00005e80| 69 7a 65 2a 28 69 7a 2b | 31 29 20 2d 20 73 7a 3b |ize*(iz+|1) - sz;|
|00005e90| 0d 0d 20 20 20 20 20 20 | 69 66 20 28 69 73 64 78 |..      |if (isdx|
|00005ea0| 20 3e 3d 20 30 29 20 0d | 20 20 20 20 20 20 20 20 | >= 0) .|        |
|00005eb0| 7b 0d 20 20 20 20 20 20 | 20 20 69 78 20 3d 20 28 |{.      |  ix = (|
|00005ec0| 69 6e 74 29 66 6c 6f 6f | 72 28 73 78 2a 49 6e 76 |int)floo|r(sx*Inv|
|00005ed0| 5f 42 6c 6b 5f 53 69 7a | 65 29 3b 20 20 20 20 20 |_Blk_Siz|e);     |
|00005ee0| 20 20 0d 20 20 20 20 20 | 20 20 20 74 66 61 72 20 |  .     |   tfar |
|00005ef0| 3d 20 47 64 7a 20 2a 20 | 28 42 6c 6f 63 6b 5f 53 |= Gdz * |(Block_S|
|00005f00| 69 7a 65 2a 28 69 78 2b | 31 29 20 2d 20 73 78 29 |ize*(ix+|1) - sx)|
|00005f10| 3b 0d 20 20 20 20 20 20 | 20 20 7d 0d 20 20 20 20 |;.      |  }.    |
|00005f20| 20 20 65 6c 73 65 20 0d | 20 20 20 20 20 20 20 20 |  else .|        |
|00005f30| 7b 0d 20 20 20 20 20 20 | 20 20 69 78 20 3d 20 28 |{.      |  ix = (|
|00005f40| 69 6e 74 29 63 65 69 6c | 28 73 78 2a 49 6e 76 5f |int)ceil|(sx*Inv_|
|00005f50| 42 6c 6b 5f 53 69 7a 65 | 29 20 2d 20 31 3b 0d 20 |Blk_Size|) - 1;. |
|00005f60| 20 20 20 20 20 20 20 74 | 66 61 72 20 3d 20 47 64 |       t|far = Gd|
|00005f70| 7a 20 2a 20 28 73 78 20 | 2d 20 42 6c 6f 63 6b 5f |z * (sx |- Block_|
|00005f80| 53 69 7a 65 2a 28 69 78 | 29 29 3b 0d 20 20 20 20 |Size*(ix|));.    |
|00005f90| 20 20 20 20 7d 0d 20 20 | 20 20 20 20 66 6f 72 20 |    }.  |    for |
|00005fa0| 28 69 20 3d 20 30 3b 20 | 69 20 3c 20 6c 65 6e 67 |(i = 0; |i < leng|
|00005fb0| 74 68 3b 20 69 2b 2b 29 | 20 0d 20 20 20 20 20 20 |th; i++)| .      |
|00005fc0| 20 20 7b 0d 20 20 20 20 | 20 20 20 20 69 66 28 74 |  {.    |    if(t|
|00005fd0| 66 61 72 20 3c 20 74 6e | 65 61 72 29 20 0d 20 20 |far < tn|ear) .  |
|00005fe0| 20 20 20 20 20 20 20 20 | 7b 0d 20 20 20 20 20 20 |        |{.      |
|00005ff0| 20 20 20 20 74 20 3d 20 | 74 66 61 72 3b 0d 20 20 |    t = |tfar;.  |
|00006000| 20 20 20 20 20 20 20 20 | 7a 20 3d 20 73 7a 20 2b |        |z = sz +|
|00006010| 20 74 3b 0d 20 20 20 20 | 20 20 20 20 20 20 79 20 | t;.    |      y |
|00006020| 3d 20 73 79 20 2b 20 4d | 79 7a 20 2a 20 74 3b 0d |= sy + M|yz * t;.|
|00006030| 20 20 20 20 20 20 20 20 | 20 20 78 20 3d 20 73 78 |        |  x = sx|
|00006040| 20 2b 20 4d 78 7a 20 2a | 20 74 3b 0d 20 20 20 20 | + Mxz *| t;.    |
|00006050| 20 20 20 20 20 20 4d 61 | 6b 65 5f 56 65 63 74 6f |      Ma|ke_Vecto|
|00006060| 72 28 6e 65 78 74 2c 20 | 78 2c 20 79 2c 20 7a 29 |r(next, |x, y, z)|
|00006070| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 69 66 28 49 |;.      |    if(I|
|00006080| 6e 74 65 72 73 65 63 74 | 5f 43 73 67 5f 53 75 62 |ntersect|_Csg_Sub|
|00006090| 5f 42 6c 6f 63 6b 28 26 | 28 48 5f 46 69 65 6c 64 |_Block(&|(H_Field|
|000060a0| 2d 3e 42 6c 6f 63 6b 5b | 69 78 5d 5b 69 7a 5d 29 |->Block[|ix][iz])|
|000060b0| 2c 52 61 79 2c 48 5f 46 | 69 65 6c 64 2c 63 75 72 |,Ray,H_F|ield,cur|
|000060c0| 72 2c 6e 65 78 74 29 29 | 0d 20 20 20 20 20 20 20 |r,next))|.       |
|000060d0| 20 20 20 20 20 72 65 74 | 76 61 6c 20 3d 20 54 52 |     ret|val = TR|
|000060e0| 55 45 3b 0d 20 20 20 20 | 20 20 20 20 20 20 74 65 |UE;.    |      te|
|000060f0| 6d 70 20 3d 20 63 75 72 | 72 3b 0d 20 20 20 20 20 |mp = cur|r;.     |
|00006100| 20 20 20 20 20 63 75 72 | 72 20 3d 20 6e 65 78 74 |     cur|r = next|
|00006110| 3b 0d 20 20 20 20 20 20 | 20 20 20 20 6e 65 78 74 |;.      |    next|
|00006120| 20 3d 20 74 65 6d 70 3b | 0d 20 20 20 20 20 20 20 | = temp;|.       |
|00006130| 20 20 20 69 78 20 2b 3d | 20 69 73 64 78 3b 0d 20 |   ix +=| isdx;. |
|00006140| 20 20 20 20 20 20 20 20 | 20 69 66 20 28 69 73 64 |        | if (isd|
|00006150| 78 20 3e 3d 20 30 29 20 | 0d 20 20 20 20 20 20 20 |x >= 0) |.       |
|00006160| 20 20 20 20 20 74 66 61 | 72 20 3d 20 47 64 7a 20 |     tfa|r = Gdz |
|00006170| 2a 20 28 42 6c 6f 63 6b | 5f 53 69 7a 65 2a 28 69 |* (Block|_Size*(i|
|00006180| 78 2b 31 29 20 2d 20 73 | 78 29 3b 0d 20 20 20 20 |x+1) - s|x);.    |
|00006190| 20 20 20 20 20 20 65 6c | 73 65 20 0d 20 20 20 20 |      el|se .    |
|000061a0| 20 20 20 20 20 20 20 20 | 74 66 61 72 20 3d 20 47 |        |tfar = G|
|000061b0| 64 7a 20 2a 20 28 73 78 | 20 2d 20 42 6c 6f 63 6b |dz * (sx| - Block|
|000061c0| 5f 53 69 7a 65 2a 28 69 | 78 29 29 3b 0d 20 20 20 |_Size*(i|x));.   |
|000061d0| 20 20 20 20 20 20 20 7d | 0d 20 20 20 20 20 20 20 |       }|.       |
|000061e0| 20 65 6c 73 65 20 0d 20 | 20 20 20 20 20 20 20 20 | else . |        |
|000061f0| 20 7b 0d 20 20 20 20 20 | 20 20 20 20 20 74 20 3d | {.     |     t =|
|00006200| 20 74 6e 65 61 72 3b 0d | 20 20 20 20 20 20 20 20 | tnear;.|        |
|00006210| 20 20 7a 20 3d 20 73 7a | 20 2b 20 74 3b 0d 20 20 |  z = sz| + t;.  |
|00006220| 20 20 20 20 20 20 20 20 | 79 20 3d 20 73 79 20 2b |        |y = sy +|
|00006230| 20 4d 79 7a 20 2a 20 74 | 3b 0d 20 20 20 20 20 20 | Myz * t|;.      |
|00006240| 20 20 20 20 78 20 3d 20 | 73 78 20 2b 20 4d 78 7a |    x = |sx + Mxz|
|00006250| 20 2a 20 74 3b 0d 20 20 | 20 20 20 20 20 20 20 20 | * t;.  |        |
|00006260| 4d 61 6b 65 5f 56 65 63 | 74 6f 72 28 6e 65 78 74 |Make_Vec|tor(next|
|00006270| 2c 20 78 2c 20 79 2c 20 | 7a 29 3b 0d 20 20 20 20 |, x, y, |z);.    |
|00006280| 20 20 20 20 20 20 69 66 | 28 49 6e 74 65 72 73 65 |      if|(Interse|
|00006290| 63 74 5f 43 73 67 5f 53 | 75 62 5f 42 6c 6f 63 6b |ct_Csg_S|ub_Block|
|000062a0| 28 26 28 48 5f 46 69 65 | 6c 64 2d 3e 42 6c 6f 63 |(&(H_Fie|ld->Bloc|
|000062b0| 6b 5b 69 78 5d 5b 69 7a | 5d 29 2c 52 61 79 2c 48 |k[ix][iz|]),Ray,H|
|000062c0| 5f 46 69 65 6c 64 2c 63 | 75 72 72 2c 6e 65 78 74 |_Field,c|urr,next|
|000062d0| 29 29 0d 20 20 20 20 20 | 20 20 20 20 20 20 20 72 |)).     |       r|
|000062e0| 65 74 76 61 6c 20 3d 20 | 54 52 55 45 3b 0d 20 20 |etval = |TRUE;.  |
|000062f0| 20 20 20 20 20 20 20 20 | 74 65 6d 70 20 3d 20 63 |        |temp = c|
|00006300| 75 72 72 3b 0d 20 20 20 | 20 20 20 20 20 20 20 63 |urr;.   |       c|
|00006310| 75 72 72 20 3d 20 6e 65 | 78 74 3b 0d 20 20 20 20 |urr = ne|xt;.    |
|00006320| 20 20 20 20 20 20 6e 65 | 78 74 20 3d 20 74 65 6d |      ne|xt = tem|
|00006330| 70 3b 0d 20 20 20 20 20 | 20 20 20 20 20 69 7a 2b |p;.     |     iz+|
|00006340| 2b 3b 0d 20 20 20 20 20 | 20 20 20 20 20 74 6e 65 |+;.     |     tne|
|00006350| 61 72 20 3d 20 42 6c 6f | 63 6b 5f 53 69 7a 65 2a |ar = Blo|ck_Size*|
|00006360| 28 69 7a 2b 31 29 20 2d | 20 73 7a 3b 0d 20 20 20 |(iz+1) -| sz;.   |
|00006370| 20 20 20 20 20 20 20 7d | 0d 20 20 20 20 20 20 20 |       }|.       |
|00006380| 20 7d 0d 20 20 20 20 20 | 20 7d 0d 20 20 20 20 65 | }.     | }.    e|
|00006390| 6c 73 65 20 0d 20 20 20 | 20 20 20 7b 20 20 20 20 |lse .   |   {    |
|000063a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|000063b0| 20 20 20 20 20 20 0d 20 | 20 20 20 20 20 69 7a 20 |      . |     iz |
|000063c0| 3d 20 28 69 6e 74 29 63 | 65 69 6c 28 73 7a 2a 49 |= (int)c|eil(sz*I|
|000063d0| 6e 76 5f 42 6c 6b 5f 53 | 69 7a 65 29 20 2d 20 31 |nv_Blk_S|ize) - 1|
|000063e0| 3b 0d 20 20 20 20 20 20 | 74 6e 65 61 72 20 3d 20 |;.      |tnear = |
|000063f0| 73 7a 20 2d 20 42 6c 6f | 63 6b 5f 53 69 7a 65 2a |sz - Blo|ck_Size*|
+--------+-------------------------+-------------------------+--------+--------+