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schorsch |
2.4 |
/* RCSid $Id: face.h,v 2.3 2003/02/25 02:47:21 greg Exp $ */ |
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greg |
1.1 |
/* |
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* face.h - header for routines using polygonal faces. |
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greg |
2.2 |
*/ |
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schorsch |
2.4 |
#ifndef _RAD_FACE_H_ |
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#define _RAD_FACE_H_ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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greg |
2.2 |
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greg |
2.3 |
#include "copyright.h" |
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greg |
1.1 |
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#define VERTEX(f,n) ((f)->va + 3*(n)) |
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typedef struct { /* a polygonal face */ |
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FVECT norm; /* the plane's unit normal */ |
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greg |
1.3 |
FLOAT offset; /* plane equation: DOT(norm, v) == offset */ |
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FLOAT area; /* area of face */ |
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FLOAT *va; /* vertex array (o->oargs.farg) */ |
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greg |
1.1 |
short nv; /* # of vertices */ |
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short ax; /* axis closest to normal */ |
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} FACE; |
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greg |
2.2 |
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extern FACE *getface(OBJREC *o); |
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extern void freeface(OBJREC *o); |
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extern int inface(FVECT p, FACE *f); |
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schorsch |
2.4 |
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#ifdef __cplusplus |
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} |
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greg |
2.2 |
#endif |
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schorsch |
2.4 |
#endif /* _RAD_FACE_H_ */ |
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