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|00000000| 00 0b 43 69 72 63 6c 65 | 2e 6a 61 76 61 00 00 00 |..Circle|.java...|
|00000010| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000040| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000050| 00 00 00 00 00 0b 62 00 | 00 01 1e b8 c5 e5 d9 b8 |......b.|........|
|00000060| c5 e5 d9 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000070| 00 00 00 00 00 00 00 00 | 00 00 81 81 b9 a8 00 00 |........|........|
|00000080| 69 6d 70 6f 72 74 20 6a | 61 76 61 2e 61 77 74 2e |import j|ava.awt.|
|00000090| 2a 3b 0a 69 6d 70 6f 72 | 74 20 6a 61 76 61 2e 61 |*;.impor|t java.a|
|000000a0| 77 74 2e 67 65 6f 6d 2e | 2a 3b 0a 0a 2f 2a 2a 0a |wt.geom.|*;../**.|
|000000b0| 20 2a 20 41 20 73 71 75 | 61 72 65 20 74 68 61 74 | * A squ|are that|
|000000c0| 20 63 61 6e 20 62 65 20 | 6d 61 6e 69 70 75 6c 65 | can be |manipule|
|000000d0| 74 65 64 20 61 6e 64 20 | 74 68 61 74 20 64 72 61 |ted and |that dra|
|000000e0| 77 73 20 69 74 73 65 6c | 66 20 6f 6e 20 61 20 63 |ws itsel|f on a c|
|000000f0| 61 6e 76 61 73 2e 0a 20 | 2a 20 0a 20 2a 20 40 61 |anvas.. |* . * @a|
|00000100| 75 74 68 6f 72 09 4d 69 | 63 68 61 65 6c 20 4b 6f |uthor.Mi|chael Ko|
|00000110| 6c 6c 69 6e 67 0a 20 2a | 20 40 76 65 72 73 69 6f |lling. *| @versio|
|00000120| 6e 20 31 2e 30 20 20 28 | 31 35 20 4a 75 6c 79 20 |n 1.0  (|15 July |
|00000130| 32 30 30 30 29 0a 20 2a | 2f 0a 0a 70 75 62 6c 69 |2000). *|/..publi|
|00000140| 63 20 63 6c 61 73 73 20 | 43 69 72 63 6c 65 0a 7b |c class |Circle.{|
|00000150| 0a 20 20 20 20 70 72 69 | 76 61 74 65 20 69 6e 74 |.    pri|vate int|
|00000160| 20 64 69 61 6d 65 74 65 | 72 3b 0a 09 70 72 69 76 | diamete|r;..priv|
|00000170| 61 74 65 20 69 6e 74 20 | 78 50 6f 73 69 74 69 6f |ate int |xPositio|
|00000180| 6e 3b 0a 09 70 72 69 76 | 61 74 65 20 69 6e 74 20 |n;..priv|ate int |
|00000190| 79 50 6f 73 69 74 69 6f | 6e 3b 0a 09 70 72 69 76 |yPositio|n;..priv|
|000001a0| 61 74 65 20 53 74 72 69 | 6e 67 20 63 6f 6c 6f 72 |ate Stri|ng color|
|000001b0| 3b 0a 0a 20 20 20 20 2f | 2a 2a 0a 20 20 20 20 20 |;..    /|**.     |
|000001c0| 2a 20 43 72 65 61 74 65 | 20 61 20 6e 65 77 20 73 |* Create| a new s|
|000001d0| 71 75 61 72 65 20 61 74 | 20 64 65 66 61 75 6c 74 |quare at| default|
|000001e0| 20 70 6f 73 69 74 69 6f | 6e 20 77 69 74 68 20 64 | positio|n with d|
|000001f0| 65 66 61 75 6c 74 20 63 | 6f 6c 6f 72 2e 0a 20 20 |efault c|olor..  |
|00000200| 20 20 20 2a 2f 0a 20 20 | 20 20 70 75 62 6c 69 63 |   */.  |  public|
|00000210| 20 43 69 72 63 6c 65 28 | 29 0a 20 20 20 20 7b 0a | Circle(|).    {.|
|00000220| 09 09 64 69 61 6d 65 74 | 65 72 20 3d 20 33 30 3b |..diamet|er = 30;|
|00000230| 0a 09 09 78 50 6f 73 69 | 74 69 6f 6e 20 3d 20 32 |...xPosi|tion = 2|
|00000240| 30 3b 0a 09 09 79 50 6f | 73 69 74 69 6f 6e 20 3d |0;...yPo|sition =|
|00000250| 20 36 30 3b 0a 09 09 63 | 6f 6c 6f 72 20 3d 20 22 | 60;...c|olor = "|
|00000260| 62 6c 75 65 22 3b 0a 09 | 09 64 72 61 77 28 29 3b |blue";..|.draw();|
|00000270| 0a 20 20 20 20 7d 0a 0a | 20 20 20 20 2f 2a 2a 0a |.    }..|    /**.|
|00000280| 20 20 20 20 20 2a 20 4d | 6f 76 65 20 74 68 65 20 |     * M|ove the |
|00000290| 73 71 75 61 72 65 20 61 | 20 66 65 77 20 70 69 78 |square a| few pix|
|000002a0| 65 6c 73 20 74 6f 20 74 | 68 65 20 72 69 67 68 74 |els to t|he right|
|000002b0| 2e 0a 20 20 20 20 20 2a | 2f 0a 20 20 20 20 70 75 |..     *|/.    pu|
|000002c0| 62 6c 69 63 20 76 6f 69 | 64 20 6d 6f 76 65 52 69 |blic voi|d moveRi|
|000002d0| 67 68 74 28 29 0a 20 20 | 20 20 7b 0a 09 09 6d 6f |ght().  |  {...mo|
|000002e0| 76 65 48 6f 72 69 7a 6f | 6e 74 61 6c 28 32 30 29 |veHorizo|ntal(20)|
|000002f0| 3b 0a 20 20 20 20 7d 0a | 0a 20 20 20 20 2f 2a 2a |;.    }.|.    /**|
|00000300| 0a 20 20 20 20 20 2a 20 | 4d 6f 76 65 20 74 68 65 |.     * |Move the|
|00000310| 20 73 71 75 61 72 65 20 | 61 20 66 65 77 20 70 69 | square |a few pi|
|00000320| 78 65 6c 73 20 74 6f 20 | 74 68 65 20 6c 65 66 74 |xels to |the left|
|00000330| 2e 0a 20 20 20 20 20 2a | 2f 0a 20 20 20 20 70 75 |..     *|/.    pu|
|00000340| 62 6c 69 63 20 76 6f 69 | 64 20 6d 6f 76 65 4c 65 |blic voi|d moveLe|
|00000350| 66 74 28 29 0a 20 20 20 | 20 7b 0a 09 09 6d 6f 76 |ft().   | {...mov|
|00000360| 65 48 6f 72 69 7a 6f 6e | 74 61 6c 28 2d 32 30 29 |eHorizon|tal(-20)|
|00000370| 3b 0a 20 20 20 20 7d 0a | 0a 20 20 20 20 2f 2a 2a |;.    }.|.    /**|
|00000380| 0a 20 20 20 20 20 2a 20 | 4d 6f 76 65 20 74 68 65 |.     * |Move the|
|00000390| 20 73 71 75 61 72 65 20 | 61 20 66 65 77 20 70 69 | square |a few pi|
|000003a0| 78 65 6c 73 20 75 70 2e | 0a 20 20 20 20 20 2a 2f |xels up.|.     */|
|000003b0| 0a 20 20 20 20 70 75 62 | 6c 69 63 20 76 6f 69 64 |.    pub|lic void|
|000003c0| 20 6d 6f 76 65 55 70 28 | 29 0a 20 20 20 20 7b 0a | moveUp(|).    {.|
|000003d0| 09 09 6d 6f 76 65 56 65 | 72 74 69 63 61 6c 28 2d |..moveVe|rtical(-|
|000003e0| 32 30 29 3b 0a 20 20 20 | 20 7d 0a 0a 20 20 20 20 |20);.   | }..    |
|000003f0| 2f 2a 2a 0a 20 20 20 20 | 20 2a 20 4d 6f 76 65 20 |/**.    | * Move |
|00000400| 74 68 65 20 73 71 75 61 | 72 65 20 61 20 66 65 77 |the squa|re a few|
|00000410| 20 70 69 78 65 6c 73 20 | 64 6f 77 6e 2e 0a 20 20 | pixels |down..  |
|00000420| 20 20 20 2a 2f 0a 20 20 | 20 20 70 75 62 6c 69 63 |   */.  |  public|
|00000430| 20 76 6f 69 64 20 6d 6f | 76 65 44 6f 77 6e 28 29 | void mo|veDown()|
|00000440| 0a 20 20 20 20 7b 0a 09 | 09 6d 6f 76 65 56 65 72 |.    {..|.moveVer|
|00000450| 74 69 63 61 6c 28 32 30 | 29 3b 0a 20 20 20 20 7d |tical(20|);.    }|
|00000460| 0a 0a 20 20 20 20 2f 2a | 2a 0a 20 20 20 20 20 2a |..    /*|*.     *|
|00000470| 20 4d 6f 76 65 20 74 68 | 65 20 73 71 75 61 72 65 | Move th|e square|
|00000480| 20 68 6f 72 69 7a 6f 6e | 74 61 6c 6c 79 20 62 79 | horizon|tally by|
|00000490| 20 27 64 69 73 74 61 6e | 63 65 27 20 70 69 78 65 | 'distan|ce' pixe|
|000004a0| 6c 73 2e 0a 20 20 20 20 | 20 2a 2f 0a 20 20 20 20 |ls..    | */.    |
|000004b0| 70 75 62 6c 69 63 20 76 | 6f 69 64 20 6d 6f 76 65 |public v|oid move|
|000004c0| 48 6f 72 69 7a 6f 6e 74 | 61 6c 28 69 6e 74 20 64 |Horizont|al(int d|
|000004d0| 69 73 74 61 6e 63 65 29 | 0a 20 20 20 20 7b 0a 09 |istance)|.    {..|
|000004e0| 09 65 72 61 73 65 28 29 | 3b 0a 09 09 78 50 6f 73 |.erase()|;...xPos|
|000004f0| 69 74 69 6f 6e 20 2b 3d | 20 64 69 73 74 61 6e 63 |ition +=| distanc|
|00000500| 65 3b 0a 09 09 64 72 61 | 77 28 29 3b 0a 20 20 20 |e;...dra|w();.   |
|00000510| 20 7d 0a 0a 20 20 20 20 | 2f 2a 2a 0a 20 20 20 20 | }..    |/**.    |
|00000520| 20 2a 20 4d 6f 76 65 20 | 74 68 65 20 73 71 75 61 | * Move |the squa|
|00000530| 72 65 20 76 65 72 74 69 | 63 61 6c 6c 79 20 62 79 |re verti|cally by|
|00000540| 20 27 64 69 73 74 61 6e | 63 65 27 20 70 69 78 65 | 'distan|ce' pixe|
|00000550| 6c 73 2e 0a 20 20 20 20 | 20 2a 2f 0a 20 20 20 20 |ls..    | */.    |
|00000560| 70 75 62 6c 69 63 20 76 | 6f 69 64 20 6d 6f 76 65 |public v|oid move|
|00000570| 56 65 72 74 69 63 61 6c | 28 69 6e 74 20 64 69 73 |Vertical|(int dis|
|00000580| 74 61 6e 63 65 29 0a 20 | 20 20 20 7b 0a 09 09 65 |tance). |   {...e|
|00000590| 72 61 73 65 28 29 3b 0a | 09 09 79 50 6f 73 69 74 |rase();.|..yPosit|
|000005a0| 69 6f 6e 20 2b 3d 20 64 | 69 73 74 61 6e 63 65 3b |ion += d|istance;|
|000005b0| 0a 09 09 64 72 61 77 28 | 29 3b 0a 20 20 20 20 7d |...draw(|);.    }|
|000005c0| 0a 0a 20 20 20 20 2f 2a | 2a 0a 20 20 20 20 20 2a |..    /*|*.     *|
|000005d0| 20 53 6c 6f 77 6c 79 20 | 6d 6f 76 65 20 74 68 65 | Slowly |move the|
|000005e0| 20 73 71 75 61 72 65 20 | 68 6f 72 69 7a 6f 6e 74 | square |horizont|
|000005f0| 61 6c 6c 79 20 62 79 20 | 27 64 69 73 74 61 6e 63 |ally by |'distanc|
|00000600| 65 27 20 70 69 78 65 6c | 73 2e 0a 20 20 20 20 20 |e' pixel|s..     |
|00000610| 2a 2f 0a 20 20 20 20 70 | 75 62 6c 69 63 20 76 6f |*/.    p|ublic vo|
|00000620| 69 64 20 73 6c 6f 77 4d | 6f 76 65 48 6f 72 69 7a |id slowM|oveHoriz|
|00000630| 6f 6e 74 61 6c 28 69 6e | 74 20 64 69 73 74 61 6e |ontal(in|t distan|
|00000640| 63 65 29 0a 20 20 20 20 | 7b 0a 09 09 69 6e 74 20 |ce).    |{...int |
|00000650| 64 65 6c 74 61 3b 0a 0a | 09 09 69 66 28 64 69 73 |delta;..|..if(dis|
|00000660| 74 61 6e 63 65 20 3c 20 | 30 29 20 0a 09 09 7b 0a |tance < |0) ...{.|
|00000670| 09 09 09 64 65 6c 74 61 | 20 3d 20 2d 31 3b 0a 09 |...delta| = -1;..|
|00000680| 09 09 64 69 73 74 61 6e | 63 65 20 3d 20 2d 64 69 |..distan|ce = -di|
|00000690| 73 74 61 6e 63 65 3b 0a | 09 09 7d 0a 09 09 65 6c |stance;.|..}...el|
|000006a0| 73 65 20 0a 09 09 7b 0a | 09 09 09 64 65 6c 74 61 |se ...{.|...delta|
|000006b0| 20 3d 20 31 3b 0a 09 09 | 7d 0a 0a 09 09 66 6f 72 | = 1;...|}....for|
|000006c0| 28 69 6e 74 20 69 20 3d | 20 30 3b 20 69 20 3c 20 |(int i =| 0; i < |
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|000006e0| 09 7b 0a 09 09 09 65 72 | 61 73 65 28 29 3b 0a 09 |.{....er|ase();..|
|000006f0| 09 09 78 50 6f 73 69 74 | 69 6f 6e 20 2b 3d 20 64 |..xPosit|ion += d|
|00000700| 65 6c 74 61 3b 0a 09 09 | 09 64 72 61 77 28 29 3b |elta;...|.draw();|
|00000710| 0a 09 09 7d 0a 20 20 20 | 20 7d 0a 0a 20 20 20 20 |...}.   | }..    |
|00000720| 2f 2a 2a 0a 20 20 20 20 | 20 2a 20 53 6c 6f 77 6c |/**.    | * Slowl|
|00000730| 79 20 6d 6f 76 65 20 74 | 68 65 20 73 71 75 61 72 |y move t|he squar|
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|00000790| 64 69 73 74 61 6e 63 65 | 29 0a 20 20 20 20 7b 0a |distance|).    {.|
|000007a0| 09 09 69 6e 74 20 64 65 | 6c 74 61 3b 0a 0a 09 09 |..int de|lta;....|
|000007b0| 69 66 28 64 69 73 74 61 | 6e 63 65 20 3c 20 30 29 |if(dista|nce < 0)|
|000007c0| 20 0a 09 09 7b 0a 09 09 | 09 64 65 6c 74 61 20 3d | ...{...|.delta =|
|000007d0| 20 2d 31 3b 0a 09 09 09 | 64 69 73 74 61 6e 63 65 | -1;....|distance|
|000007e0| 20 3d 20 2d 64 69 73 74 | 61 6e 63 65 3b 0a 09 09 | = -dist|ance;...|
|000007f0| 7d 0a 09 09 65 6c 73 65 | 20 0a 09 09 7b 0a 09 09 |}...else| ...{...|
|00000800| 09 64 65 6c 74 61 20 3d | 20 31 3b 0a 09 09 7d 0a |.delta =| 1;...}.|
|00000810| 0a 09 09 66 6f 72 28 69 | 6e 74 20 69 20 3d 20 30 |...for(i|nt i = 0|
|00000820| 3b 20 69 20 3c 20 64 69 | 73 74 61 6e 63 65 3b 20 |; i < di|stance; |
|00000830| 69 2b 2b 29 0a 09 09 7b | 0a 09 09 09 65 72 61 73 |i++)...{|....eras|
|00000840| 65 28 29 3b 0a 09 09 09 | 79 50 6f 73 69 74 69 6f |e();....|yPositio|
|00000850| 6e 20 2b 3d 20 64 65 6c | 74 61 3b 0a 09 09 09 64 |n += del|ta;....d|
|00000860| 72 61 77 28 29 3b 0a 09 | 09 7d 0a 20 20 20 20 7d |raw();..|.}.    }|
|00000870| 0a 0a 20 20 20 20 2f 2a | 2a 0a 20 20 20 20 20 2a |..    /*|*.     *|
|00000880| 20 43 68 61 6e 67 65 20 | 74 68 65 20 73 69 7a 65 | Change |the size|
|00000890| 20 74 6f 20 74 68 65 20 | 6e 65 77 20 73 69 7a 65 | to the |new size|
|000008a0| 20 28 69 6e 20 70 69 78 | 65 6c 73 29 2e 20 53 69 | (in pix|els). Si|
|000008b0| 7a 65 20 6d 75 73 74 20 | 62 65 20 3e 3d 20 30 2e |ze must |be >= 0.|
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|000008d0| 6c 69 63 20 76 6f 69 64 | 20 63 68 61 6e 67 65 53 |lic void| changeS|
|000008e0| 69 7a 65 28 69 6e 74 20 | 6e 65 77 44 69 61 6d 65 |ize(int |newDiame|
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|00000910| 20 3d 20 6e 65 77 44 69 | 61 6d 65 74 65 72 3b 0a | = newDi|ameter;.|
|00000920| 09 09 64 72 61 77 28 29 | 3b 0a 20 20 20 20 7d 0a |..draw()|;.    }.|
|00000930| 0a 20 20 20 20 2f 2a 2a | 0a 20 20 20 20 20 2a 20 |.    /**|.     * |
|00000940| 43 68 61 6e 67 65 20 74 | 68 65 20 63 6f 6c 6f 72 |Change t|he color|
|00000950| 2e 20 56 61 6c 69 64 20 | 63 6f 6c 6f 72 73 20 61 |. Valid |colors a|
|00000960| 72 65 20 22 72 65 64 22 | 2c 20 22 79 65 6c 6c 6f |re "red"|, "yello|
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|00000980| 65 6e 22 2c 0a 09 20 2a | 20 22 6d 61 67 65 6e 74 |en",.. *| "magent|
|00000990| 61 22 20 61 6e 64 20 22 | 62 6c 61 63 6b 22 2e 0a |a" and "|black"..|
|000009a0| 20 20 20 20 20 2a 2f 0a | 20 20 20 20 70 75 62 6c |     */.|    publ|
|000009b0| 69 63 20 76 6f 69 64 20 | 63 68 61 6e 67 65 43 6f |ic void |changeCo|
|000009c0| 6c 6f 72 28 53 74 72 69 | 6e 67 20 6e 65 77 43 6f |lor(Stri|ng newCo|
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|000009e0| 6f 72 20 3d 20 6e 65 77 | 43 6f 6c 6f 72 3b 0a 09 |or = new|Color;..|
|000009f0| 09 64 72 61 77 28 29 3b | 0a 20 20 20 20 7d 0a 0a |.draw();|.    }..|
|00000a00| 09 2f 2a 0a 09 20 2a 20 | 44 72 61 77 20 74 68 65 |./*.. * |Draw the|
|00000a10| 20 73 71 75 61 72 65 20 | 77 69 74 68 20 63 75 72 | square |with cur|
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|00000a30| 6f 6e 73 20 6f 6e 20 73 | 63 72 65 65 6e 2e 0a 09 |ons on s|creen...|
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|00000a50| 64 20 64 72 61 77 28 29 | 0a 09 7b 0a 09 09 43 61 |d draw()|..{...Ca|
|00000a60| 6e 76 61 73 20 63 61 6e | 76 61 73 20 3d 20 43 61 |nvas can|vas = Ca|
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|00000a80| 3b 0a 09 09 63 61 6e 76 | 61 73 2e 73 65 74 46 6f |;...canv|as.setFo|
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|00000aa0| 6f 6c 6f 72 29 3b 0a 09 | 09 63 61 6e 76 61 73 2e |olor);..|.canvas.|
|00000ab0| 66 69 6c 6c 28 6e 65 77 | 20 45 6c 6c 69 70 73 65 |fill(new| Ellipse|
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|00000ad0| 69 6f 6e 2c 20 79 50 6f | 73 69 74 69 6f 6e 2c 20 |ion, yPo|sition, |
|00000ae0| 0a 09 09 09 09 09 09 09 | 09 09 09 20 64 69 61 6d |........|... diam|
|00000af0| 65 74 65 72 2c 20 64 69 | 61 6d 65 74 65 72 29 29 |eter, di|ameter))|
|00000b00| 3b 0a 09 09 63 61 6e 76 | 61 73 2e 77 61 69 74 28 |;...canv|as.wait(|
|00000b10| 31 30 29 3b 0a 09 7d 0a | 0a 09 2f 2a 0a 09 20 2a |10);..}.|../*.. *|
|00000b20| 20 45 72 61 73 65 20 74 | 68 65 20 73 71 75 61 72 | Erase t|he squar|
|00000b30| 65 20 6f 6e 20 73 63 72 | 65 65 6e 2e 0a 09 20 2a |e on scr|een... *|
|00000b40| 2f 0a 09 70 72 69 76 61 | 74 65 20 76 6f 69 64 20 |/..priva|te void |
|00000b50| 65 72 61 73 65 28 29 0a | 09 7b 0a 09 09 43 61 6e |erase().|.{...Can|
|00000b60| 76 61 73 20 63 61 6e 76 | 61 73 20 3d 20 43 61 6e |vas canv|as = Can|
|00000b70| 76 61 73 2e 67 65 74 43 | 61 6e 76 61 73 28 29 3b |vas.getC|anvas();|
|00000b80| 0a 09 09 63 61 6e 76 61 | 73 2e 65 72 61 73 65 28 |...canva|s.erase(|
|00000b90| 6e 65 77 20 45 6c 6c 69 | 70 73 65 32 44 2e 44 6f |new Elli|pse2D.Do|
|00000ba0| 75 62 6c 65 28 78 50 6f | 73 69 74 69 6f 6e 2c 20 |uble(xPo|sition, |
|00000bb0| 79 50 6f 73 69 74 69 6f | 6e 2c 20 0a 09 09 09 09 |yPositio|n, .....|
|00000bc0| 09 09 09 09 09 09 20 64 | 69 61 6d 65 74 65 72 2c |...... d|iameter,|
|00000bd0| 20 64 69 61 6d 65 74 65 | 72 29 29 3b 0a 09 7d 0a | diamete|r));..}.|
|00000be0| 7d 0a 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |}.......|........|
|00000bf0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000c00| 00 00 01 00 00 00 01 00 | 00 00 00 00 00 00 00 1e |........|........|
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|00000c20| 72 6b 20 69 6e 74 65 6e | 74 69 6f 6e 61 6c 6c 79 |rk inten|tionally|
|00000c30| 20 6c 65 66 74 20 62 6c | 61 6e 6b 20 20 20 00 00 | left bl|ank   ..|
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+--------+-------------------------+-------------------------+--------+--------+