[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [43890] branches/bmesh/blender/source/ blender: update sculpt mode not to rely on tesselated faces (use MPoly' s instead, saves slowdown of having to maintain tesselation of base mesh data)

[Campbell Barton]

Revision: 43890
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=43890
Author:   campbellbarton
Date:     2012-02-05 04:11:34 +0000 (Sun, 05 Feb 2012)
Log Message:
-----------
update sculpt mode not to rely on tesselated faces (use MPoly's instead, saves slowdown of having to maintain tesselation of base mesh data)

Modified Paths:
--------------
    branches/bmesh/blender/source/blender/blenkernel/BKE_paint.h
    branches/bmesh/blender/source/blender/editors/sculpt_paint/sculpt.c

Modified: branches/bmesh/blender/source/blender/blenkernel/BKE_paint.h
===================================================================
--- branches/bmesh/blender/source/blender/blenkernel/BKE_paint.h	2012-02-05 03:25:13 UTC (rev 43889)
+++ branches/bmesh/blender/source/blender/blenkernel/BKE_paint.h	2012-02-05 04:11:34 UTC (rev 43890)
@@ -67,8 +67,9 @@
 	/* Mesh data (not copied) can come either directly from a Mesh, or from a MultiresDM */
 	struct MultiresModifierData *multires; /* Special handling for multires meshes */
 	struct MVert *mvert;
-	struct MFace *mface;
-	int totvert, totface;
+	struct MPoly *mpoly;
+	struct MLoop *mloop;
+	int totvert, totpoly;
 	float *face_normals;
 	struct KeyBlock *kb;
 	

Modified: branches/bmesh/blender/source/blender/editors/sculpt_paint/sculpt.c
===================================================================
--- branches/bmesh/blender/source/blender/editors/sculpt_paint/sculpt.c	2012-02-05 03:25:13 UTC (rev 43889)
+++ branches/bmesh/blender/source/blender/editors/sculpt_paint/sculpt.c	2012-02-05 04:11:34 UTC (rev 43890)
@@ -904,10 +904,11 @@
    polygon.) */
 static void neighbor_average(SculptSession *ss, float avg[3], const unsigned vert)
 {
-	int i, skip= -1, total=0;
+	int i, j, ok, total=0;
 	IndexNode *node= ss->fmap[vert].first;
 	char ncount= BLI_countlist(&ss->fmap[vert]);
-	MFace *f;
+	MPoly *f;
+	MLoop *ml;
 
 	avg[0] = avg[1] = avg[2] = 0;
 		
@@ -920,21 +921,34 @@
 	}
 
 	while(node){
-		f= &ss->mface[node->index];
-		
-		if(f->v4) {
-			skip= (f->v1==vert?2:
-				   f->v2==vert?3:
-				   f->v3==vert?0:
-				   f->v4==vert?1:-1);
+		f= &ss->mpoly[node->index];
+
+		/* find the loop in the poly whic references this vertex */
+		ok = FALSE;
+		ml = ss->mloop + f->loopstart;
+		for (j = 0; j < f->totloop; j++, ml++) {
+			if (ml->v == vert) {
+				ok = TRUE;
+				break;
+			}
 		}
 
-		for(i=0; i<(f->v4?4:3); ++i) {
-			if(i != skip && (ncount!=2 || BLI_countlist(&ss->fmap[(&f->v1)[i]]) <= 2)) {
-				if(ss->deform_cos) add_v3_v3(avg, ss->deform_cos[(&f->v1)[i]]);
-				else add_v3_v3(avg, ss->mvert[(&f->v1)[i]].co);
-				++total;
+		if (ok) {
+			/* vertex was found */
+			unsigned int f_adj_v[3] = {
+			    ME_POLY_LOOP_PREV(ss->mloop, f, j)->v,
+			    ml->v,
+			    ME_POLY_LOOP_NEXT(ss->mloop, f, j)->v};
+
+
+			for (i=0; i<3; ++i) {
+				if (ncount!=2 || BLI_countlist(&ss->fmap[f_adj_v[i]]) <= 2) {
+					if(ss->deform_cos) add_v3_v3(avg, ss->deform_cos[f_adj_v[i]]);
+					else add_v3_v3(avg, ss->mvert[f_adj_v[i]].co);
+					++total;
+				}
 			}
+
 		}
 
 		node= node->next;
@@ -2692,17 +2706,19 @@
 	if(mmd) {
 		ss->multires = mmd;
 		ss->totvert = dm->getNumVerts(dm);
-		ss->totface = dm->getNumTessFaces(dm);
+		ss->totpoly = dm->getNumPolys(dm);
 		ss->mvert= NULL;
-		ss->mface= NULL;
+		ss->mpoly= NULL;
+		ss->mloop= NULL;
 		ss->face_normals= NULL;
 	}
 	else {
 		Mesh *me = get_mesh(ob);
 		ss->totvert = me->totvert;
-		ss->totface = me->totface;
+		ss->totpoly = me->totpoly;
 		ss->mvert = me->mvert;
-		ss->mface = me->mface;
+		ss->mpoly = me->mpoly;
+		ss->mloop = me->mloop;
 		ss->face_normals = NULL;
 		ss->multires = NULL;
 	}
@@ -2920,8 +2936,8 @@
 	if(brush->flag & BRUSH_ANCHORED) {
 		if(ss->face_normals) {
 			float *fn = ss->face_normals;
-			cache->face_norms= MEM_mallocN(sizeof(float) * 3 * ss->totface, "Sculpt face norms");
-			for(i = 0; i < ss->totface; ++i, fn += 3)
+			cache->face_norms= MEM_mallocN(sizeof(float) * 3 * ss->totpoly, "Sculpt face norms");
+			for(i = 0; i < ss->totpoly; ++i, fn += 3)
 				copy_v3_v3(cache->face_norms[i], fn);
 		}
 
@@ -3331,7 +3347,7 @@
 
 		if(ss->face_normals) {
 			float *fn = ss->face_normals;
-			for(i = 0; i < ss->totface; ++i, fn += 3)
+			for(i = 0; i < ss->totpoly; ++i, fn += 3)
 				copy_v3_v3(fn, cache->face_norms[i]);
 		}