long int skymode; /* 0 None, 1 solid, 2 graduated */
long int checkscale; /* Size of checkered ground */
unsigned char backbright[3];
/* Intensity of background illumination
as RGB values on a scale of 0 to 255 */
unsigned char grcol1[3],grcol2[3];
/* Colors of ground squares as RGB
values on a scale of 0 to 255 */
unsigned char skycol1[3],skycol2[3];
/* Sky colors as RGB values on
a scale of 0 to 255 */
long int dummy[20]; /* Reserved for future use, should be set
to zero */
};
/* Chunk 'VERT' contains an array of the following structure, one
element for each vertex to be included in the scene
*/
struct evertex
{
long int pos[3]; /* Position of vertex */
};
/* Chunk 'EDGE' contains an array of the following structure, one
element for each edge in the scene
*/
struct eedge
{long int evertexi[2]; /* Indices denoting vertices in VERT chunk */
};
/* Chunk 'FACE' cantains an array of the following structures, one
element for each face in the scene
*/
struct eface
{long int evertexi[3]; /* Indices denoting vertices in VERT chunk */
unsigned char color[3];
/* Face color as RGB values in the range
0 to 255 */
unsigned char texture; /* The most significant bit is set
if smoothing is needed. The remaining
bits represent a texture value as follows:
0 Dull
1 Shiny
2 Mirror
3 Luminous
4 Glass
5 Metal
6 Glass2 */
};
/* The chunk 'HIER' contains an array of the following structures,
one element for each name in the hierarchy
*/
struct ehier
{short int parindex; /* index to the hierarchy element
that is the parent of this element */
char name[10]; /* Name of hierarchy element */
short int type; /* Type of element, as follows:
0 Empty
2 Lamp
4 Path
6 Target
8 Observer location
10 Vertices
Bit 0x10 is set if a local origin is
used by this element */
short int loverti; /* index to the vertex that is the local
of this element */
long int lo[3]; /* Local origin position */
};
/* Chunk 'VNAM' contains an array of the following structure, one
element for each vertex that has a hierarchy name
*/
struct ename
{short int object; /* index to vertex */
short int name; /* index to hierarchy name */
};
/* The chunk 'LNAM' contains an array of short integer values
representing the hierarchy indices for each lamp. Unnamed
lamps are given an index of -1.
*/
/* The chunk 'PATH' contains an array of the following structure,
one element for each vertex that is a part of a path.
*/
struct epath
{int evertexi; /* Index to vertex */
long int etumbleaxes[3][3];
/* Tumble axis directions, scaled by a
factor of 1L<<30 */
int terminator;
/* Code value with bits set as follows:
1 end of path
2 end of loop
4 interpolated */
};
/* The chunk 'KNOT' contains an array of the following structure,
one element for each knot vertex included in the scene
*/
struct eknot
{long int eslopes[2][3];
/* Knot slopes scaled by 1L<<30 */
long int espeeds[2];
/* Speed values scaled by 1L<<30 */
short int evertexi;
/* index to vertex */
short int terminator;
/* Code value with bits set as follows:
1 end of spline
2 end of loop
4 interpolated
8 cusp */
};
/* The chunk 'SPLN' contains an array of the following structure,
one element for each non-knot spline vertex
*/
struct espline
{short int evertexi;
/* Index to vertex */
short int evertknoti;
/* Index to knot */
};
/* The chunk 'CSGE' contains a CSG object type identifier,
and a long array of indices to vertices of the object
*/
struct ecsg
{short int type; /* set as follows:
0 sphere */
long int evertexi[12];
/* Indices to vertices in CSG sphere */
};
/*
Take files
A take is automatically saved to disk at frequent intervals as a file whose name ends with '.take'. It is an IFF file with a form name called 'TAKE' containing the following chunks.
*/
/* Chunk 'THDR' contains the following structure:
*/
struct take
{int frmode; /* set to 1 for frame mode */
int rammode; /* set as follows:
0 not RAM animation
1 normal RAM animation
2 economy RAM animation
3 ANIM-5 RAM animation */
int numframes; /* number of frames in the take */
int curframe; /* current frame number */
int saveimages; /* set to 1 if frames are to be saved to disk */
int prevsize; /* preview size as follows:
2 Medium
3 Full */
int motionblur;
/* set for motion blur */
int loopmode; /* set as follows:
0 no loop
1 loop
2 oscillation */
int framebuffer; /* set if frame buffer is in use */
int framecontroller; /* set if frame controller is in use */
char anidrawer[22]; /* animation drawer name */
char foreground[22]; /* foreground file name */
char background[22]; /* background file name */
char pad1[22]; /* unused, should be set to zero */
char fcname[22]; /* frame controller name */
char pad2[22]; /* unused, should be set to zero */
char fbname[22]; /* frame buffer name */
short int colorlock; /* set when colors are locked */
char creg[96]; /* current color registers */
short int explock; /* set when exposure values are locked */
short int expexp; /* internal use only */
long int expmant; /* internal use only */
short int obsmode; /* Rendering mode as follows
0 Painting
1 Snapshot
2 Photo
3 Wireframe
4 Sketch
5 Scanline painting
6 Scanline snapshot */
short int hires; /* 0 for low and 1 for high resolution */
short int lace; /* 0 for non-interlace 1 for interlace */
short int picsize; /* Image size as follows
0 Tiny
1 Small
2 Medium
3 Full
4 Jumbo
5 Video */
short int bitplanes; /* number of bit planes */
unsigned char wfcol1[4],wfcol2[4];
/* colors for wire frame rendering */
char padding[64]; /* unused, should be set to zero */
};
/* The remaining chunks are of type 'TFRM', one for each frame in
the take. Each chunk contains the following structure
*/
struct etakeframe
{short int framenum; /* Frame number */
short int keyframe; /* Set to 1 if it is a keyframe */
short int duration; /* Duration, in jiffies */
char imadrawer[22]; /* image drawer name */
char scedrawer[22]; /* scene drawer name */
char padding[64]; /* unused, should be set to zero */
