+ }
+#endif
+#define SHADOWCASTFRONT 1
+#if SHADOWCASTFRONT
+ for (j = 0;j < e->numsurfaces;j++)
+ {
+ surf = e->surfaces[j];
+#else
+ for (j = 0, surf = loadmodel->surfaces + loadmodel->firstmodelsurface;j < loadmodel->nummodelsurfaces;j++, surf++)
+ {
+#endif
+ if (!(surf->flags & SURF_CLIPSOLID))
+ continue;
+ f = DotProduct(e->origin, surf->plane->normal) - surf->plane->dist;
+ if (surf->flags & SURF_PLANEBACK)
+ f = -f;
+#if SHADOWCASTFRONT
+ projectdistance = e->cullradius - f;
+#else
+ projectdistance = e->cullradius + f;
+#endif
+ if (projectdistance < 0.1 || projectdistance > e->cullradius)
+ continue;
+ VectorSubtract(e->origin, surf->poly_center, temp);
+ if (DotProduct(temp, temp) > (surf->poly_radius2 + e->cullradius2))
+ continue;
+ /*
+ VectorCopy(surf->poly_verts, polymins);
+ VectorCopy(surf->poly_verts, polymaxs);
+ for (k = 0, v0 = surf->poly_verts;k < surf->poly_numverts;k++, v0 += 3)
+ {
+ if (polymins[0] > v0[0]) polymins[0] = v0[0];if (polymaxs[0] < v0[0]) polymaxs[0] = v0[0];
+ if (polymins[1] > v0[1]) polymins[1] = v0[1];if (polymaxs[1] < v0[1]) polymaxs[1] = v0[1];
+ if (polymins[2] > v0[2]) polymins[2] = v0[2];if (polymaxs[2] < v0[2]) polymaxs[2] = v0[2];
+ }
+ if (polymins[0] > e->maxs[0] || polymaxs[0] < e->mins[0]
+ || polymins[1] > e->maxs[1] || polymaxs[1] < e->mins[1]
+ || polymins[2] > e->maxs[2] || polymaxs[2] < e->mins[2])
+ continue;
+ */
+ if (maxverts < surf->poly_numverts)
+ {
+ maxverts = surf->poly_numverts;
+ if (verts)
+ Mem_Free(verts);
+ verts = Mem_Alloc(loadmodel->mempool, maxverts * sizeof(float[3]));
+ }
+ svbrush = Mod_ShadowBrush_BeginBrush(loadmodel->mempool);
+#if SHADOWCASTFRONT
+ // copy the original polygon, for the front cap of the volume
+ for (k = 0, v0 = surf->poly_verts, v1 = verts;k < surf->poly_numverts;k++, v0 += 3, v1 += 3)
+ VectorCopy(v0, v1);
+ Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, surf->poly_numverts, verts);
+ // project the original polygon, reversed, for the back cap of the volume
+ for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = verts;k < surf->poly_numverts;k++, v0 -= 3, v1 += 3)
+ {
+ VectorSubtract(v0, e->origin, temp);
+ VectorNormalize(temp);
+ VectorMA(v0, projectdistance, temp, v1);
+ }
+ Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, surf->poly_numverts, verts);
+ // project the shadow volume sides
+ for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;k < surf->poly_numverts;k++, v0 = v1, v1 += 3)
+ {
+ VectorCopy(v1, &verts[0]);
+ VectorCopy(v0, &verts[3]);
+ VectorCopy(v0, &verts[6]);
+ VectorCopy(v1, &verts[9]);
+ VectorSubtract(&verts[6], e->origin, temp);
+ VectorNormalize(temp);
+ VectorMA(&verts[6], projectdistance, temp, &verts[6]);
+ VectorSubtract(&verts[9], e->origin, temp);
+ VectorNormalize(temp);
+ VectorMA(&verts[9], projectdistance, temp, &verts[9]);
+ Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
+ }
+#else
+ // copy the original polygon, reversed, for the front cap of the volume
+ for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = verts;k < surf->poly_numverts;k++, v0 -= 3, v1 += 3)
+ VectorCopy(v0, v1);
+ Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, surf->poly_numverts, verts);
+ // project the original polygon, for the back cap of the volume
+ for (k = 0, v0 = surf->poly_verts, v1 = verts;k < surf->poly_numverts;k++, v0 += 3, v1 += 3)
+ {
+ VectorSubtract(v0, e->origin, temp);
+ VectorNormalize(temp);
+ VectorMA(v0, projectdistance, temp, v1);
+ }
+ Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, surf->poly_numverts, verts);
+ // project the shadow volume sides
+ for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;k < surf->poly_numverts;k++, v0 = v1, v1 += 3)
+ {
+ VectorCopy(v0, &verts[0]);
+ VectorCopy(v1, &verts[3]);
+ VectorCopy(v1, &verts[6]);
+ VectorCopy(v0, &verts[9]);
+ VectorSubtract(&verts[6], e->origin, temp);
+ VectorNormalize(temp);
+ VectorMA(&verts[6], projectdistance, temp, &verts[6]);
+ VectorSubtract(&verts[9], e->origin, temp);
+ VectorNormalize(temp);
+ VectorMA(&verts[9], projectdistance, temp, &verts[9]);
+ Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
+ }
+#endif
+ Mod_ShadowBrush_EndBrush(svworld, svbrush);
+ }