47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
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// this is only used for visualization tools in cm_ debug functions
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typedef struct
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{
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int numpoints;
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vec3_t p[4]; // variable sized
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} winding_t;
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#define MAX_POINTS_ON_WINDING 64
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#define SIDE_FRONT 0
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#define SIDE_BACK 1
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#define SIDE_ON 2
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#define SIDE_CROSS 3
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#define CLIP_EPSILON 0.1f
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#define MAX_MAP_BOUNDS 65535
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// you can define on_epsilon in the makefile as tighter
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#ifndef ON_EPSILON
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#define ON_EPSILON 0.1f
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#endif
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winding_t *AllocWinding (int points);
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vec_t WindingArea (winding_t *w);
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void WindingCenter (winding_t *w, vec3_t center);
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void ClipWindingEpsilon (winding_t *in, vec3_t normal, vec_t dist,
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vec_t epsilon, winding_t **front, winding_t **back);
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winding_t *ChopWinding (winding_t *in, vec3_t normal, vec_t dist);
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winding_t *CopyWinding (winding_t *w);
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winding_t *ReverseWinding (winding_t *w);
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winding_t *BaseWindingForPlane (vec3_t normal, vec_t dist);
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void CheckWinding (winding_t *w);
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void WindingPlane (winding_t *w, vec3_t normal, vec_t *dist);
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void RemoveColinearPoints (winding_t *w);
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int WindingOnPlaneSide (winding_t *w, vec3_t normal, vec_t dist);
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void FreeWinding (winding_t *w);
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void WindingBounds (winding_t *w, vec3_t mins, vec3_t maxs);
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void AddWindingToConvexHull( winding_t *w, winding_t **hull, vec3_t normal );
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void ChopWindingInPlace (winding_t **w, vec3_t normal, vec_t dist, vec_t epsilon);
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// frees the original if clipped
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void pw(winding_t *w);
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