// csg4.c

//=============================================================================

// build surfaces is also used by GatherNodeFaces

extern struct visfacet **validfaces;		//[MAX_MAP_PLANES];

//=============================================================================

struct surface * BuildSurfaces(__memBase);
struct surface * CSGFaces(__memBase, struct brushset * bs);
struct visfacet * NewFaceFromFace(register struct visfacet * in, register int points);
void SplitFace(struct visfacet * in, struct plane * split, struct visfacet ** front, struct visfacet ** back);