diff options
| author | Steven Fuller <relnev@icculus.org> | 2001-07-12 17:22:07 +0000 |
|---|---|---|
| committer | Patryk Obara <dreamer.tan@gmail.com> | 2019-08-20 02:22:36 +0200 |
| commit | 936a5198e46e3c7a8f72959373a69336b1697e76 (patch) | |
| tree | 4df06c2e582f753039e52a72e6c0e0f3b6cd6fd1 /src/frustum.h | |
| parent | 1fcf3c028ae1eb5072e70fa0a8a856dfbfae595b (diff) | |
lots of small changes that didn't get checked in
Diffstat (limited to 'src/frustum.h')
| -rw-r--r-- | src/frustum.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/frustum.h b/src/frustum.h new file mode 100644 index 0000000..faf7795 --- /dev/null +++ b/src/frustum.h @@ -0,0 +1,68 @@ +#ifndef _frustrum_h_ /* Is this your first time? */ +#define _frustrum_h_ 1 + +#include "kshape.h" +/* + * KJL 15:13:43 7/17/97 - frustrum.h + * + * function prototypes & pointers for things connected + * to the view frustrum and clipping + * + */ + +enum FrustrumType +{ + FRUSTRUM_TYPE_NORMAL, + FRUSTRUM_TYPE_WIDE +}; + +extern void SetFrustrumType(enum FrustrumType frustrumType); + +/* GOURAUD POLYGON CLIPPING */ +extern void GouraudPolygon_ClipWithZ(void); +extern void (*GouraudPolygon_ClipWithNegativeX)(void); +extern void (*GouraudPolygon_ClipWithPositiveY)(void); +extern void (*GouraudPolygon_ClipWithNegativeY)(void); +extern void (*GouraudPolygon_ClipWithPositiveX)(void); + +/* TEXTURED POLYGON CLIPPING */ +extern void TexturedPolygon_ClipWithZ(void); +extern void (*TexturedPolygon_ClipWithNegativeX)(void); +extern void (*TexturedPolygon_ClipWithPositiveY)(void); +extern void (*TexturedPolygon_ClipWithNegativeY)(void); +extern void (*TexturedPolygon_ClipWithPositiveX)(void); + +/* GOURAUD TEXTURED POLYGON CLIPPING */ +extern void GouraudTexturedPolygon_ClipWithZ(void); +extern void (*GouraudTexturedPolygon_ClipWithNegativeX)(void); +extern void (*GouraudTexturedPolygon_ClipWithPositiveY)(void); +extern void (*GouraudTexturedPolygon_ClipWithNegativeY)(void); +extern void (*GouraudTexturedPolygon_ClipWithPositiveX)(void); + +/* FRUSTRUM TESTS */ +extern int PolygonWithinFrustrum(POLYHEADER *polyPtr); +extern int PolygonShouldBeDrawn(POLYHEADER *polyPtr); +extern int (*ObjectWithinFrustrum)(DISPLAYBLOCK *dbPtr); +extern int (*ObjectCompletelyWithinFrustrum)(DISPLAYBLOCK *dbPtr); +extern int (*VertexWithinFrustrum)(RENDERVERTEX *vertexPtr); +extern void (*TestVerticesWithFrustrum)(void); + +extern int DecalWithinFrustrum(DECAL *decalPtr); +extern int QuadWithinFrustrum(void); +extern int TriangleWithinFrustrum(void); + + +/* pass a pointer to a vertex to be tested; results are returned in an int, +using the following defines */ +#define INSIDE_FRUSTRUM_Z_PLANE 1 +#define INSIDE_FRUSTRUM_PX_PLANE 2 +#define INSIDE_FRUSTRUM_NX_PLANE 4 +#define INSIDE_FRUSTRUM_PY_PLANE 8 +#define INSIDE_FRUSTRUM_NY_PLANE 16 +#define INSIDE_FRUSTRUM 31 + +extern char FrustrumFlagForVertex[maxrotpts]; + +#define USE_FOV_53 0 + +#endif |