// Generate vertexes and indexes for a polytope, and optionally returns the polygon windings. The positive sides of the planes will be visible.
public static SrfTriangles R_PolytopeSurface(int numPlanes, Plane[] planes, Winding[] windings)
{
int i, j;
SrfTriangles tri;
var planeWindings = new FixedWinding[MAX_POLYTOPE_PLANES];
int numVerts, numIndexes;
if (numPlanes > MAX_POLYTOPE_PLANES)
{
common.Error($"R_PolytopeSurface: more than {MAX_POLYTOPE_PLANES} planes");
}
numVerts = 0;
numIndexes = 0;
for (i = 0; i < numPlanes; i++)
{
ref Plane plane = ref planes[i];
ref FixedWinding w = ref planeWindings[i];
// get the polygon of a model public bool GetModelPolygon(CmHandle model, int polygonNum, FixedWinding winding);
//-------------- Decals and Overlays -----------------
// Creates decals on all world surfaces that the winding projects onto. The projection origin should be infront of the winding plane.
// The decals are projected onto world geometry between the winding plane and the projection origin. The decals are depth faded from the winding plane to a certain distance infront of the
// winding plane and the same distance from the projection origin towards the winding.
public abstract void ProjectDecalOntoWorld(FixedWinding winding, in Vector3 projectionOrigin, bool parallel, float fadeDepth, Material material, int startTime);