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typedef struct TAG {
int poly ; /* an index to a tagged polygon */
int vert ; /* an index to the tagged vertex */
} TAG ;
typedef struct EXPRESSION {
char name[80] ; /* name of the expression */
float m[20] ; /* an expression vector */
float bias ; /* an bias control for the muscles */
} EXPRESSION ;
typedef struct MUSCLE {
int active ; /* activity switch for the muscle */
float head[3] ; /* head of the muscle vector */
float tail[3] ; /* tail of the muscle vector */
float zone, /* zone of influence */
fs, fe, mval ; /* zone, start, end, contraction */
char name[80] ; /* name of the muscle */
float clampv ; /* clamping value */
float mstat ; /* current contraction value */
} MUSCLE ;
typedef struct VERTEX {
float xyz[3] ; /* x,y,z of the vertex (modified) */
float nxyz[3] ; /* x,y,z of the vertex (never modified) */
int np ; /* number of polygons associated with node */
int plist[30] ; /* list of polygons associated with node */
float norm[3] ; /* polygon vertex normal */
} VERTEX ;
typedef struct POLYGON {
VERTEX *vertex[3] ; /* pointer to an array of three vertices */
} POLYGON ;
typedef struct HEAD {
int npindices ; /* number of polygon indices */
int *indexlist ; /* integer index list of size npindices*4 */
int npolylinenodes ; /* number of nodes in the poly line */
float *polyline ; /* xyz nodes in the poly line */
int npolygons ; /* total number of polygons */
POLYGON **polygon ; /* pointer to the polygon list */
int neyelidtags ; /* number of eyelid tags */
TAG **eyelidtag ; /* pointer to the eyelid tags */
float eyelidang ; /* rotation of the eyelids */
int njawtags ; /* number of jaw tags */
TAG **jawtag ; /* pointer to the eyelid tags */
float jawang ; /* rotation of the jaw */
int nmuscles ; /* number of muscles in the face */
MUSCLE **muscle ; /* pointer to the muscle list */
int nexpressions ; /* number of expressions in the */
EXPRESSION **expression ; /* point to an expression vector */
} HEAD ;
/* main.c */
extern int verbose;
/* make_face.c */
HEAD *create_face ( char *, char * ) ;
void averaged_vertex_normals ( HEAD *face, int p,
float *n1, float *n2, float *n3 ) ;
void face_reset ( HEAD *face );
void expressions ( HEAD *face, int e );
void data_struct ( HEAD *face );
/* display.c */
void paint_polyline ( HEAD *face ) ;
void paint_polygons ( HEAD *face, int type, int normals ) ;
void calculate_polygon_vertex_normal ( HEAD *face );
void paint_muscles ( HEAD *face );
/* muscle.c */
void activate_muscle (HEAD *face, float *vt, float *vh, float fstart, float fin, float ang, float val);
/* fileio.c */
void read_polygon_indices ( char *FileName, HEAD *face );
void read_polygon_line ( char *FileName , HEAD *face );
void read_muscles ( char *FileName , HEAD *face );
void read_expression_vectors ( char *FileName , HEAD *face );
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