From 7110a4a288bed770ce03534e4508e05e7e1e2d78 Mon Sep 17 00:00:00 2001
From: Nicholas Bishop <nicholasbishop@gmail.com>
Date: Wed, 20 Oct 2010 01:17:18 +0000
Subject: == Sculpt ==

Fixed bug #22634, sculpting/multires and wireframe display mode glitches

* Changed ccgdm edge drawing to always use face griddata rather than edge data, since edge data is not updated during sculpting.
---
 source/blender/blenkernel/intern/subsurf_ccg.c | 73 +++++++++++---------------
 1 file changed, 32 insertions(+), 41 deletions(-)

(limited to 'source')

diff --git a/source/blender/blenkernel/intern/subsurf_ccg.c b/source/blender/blenkernel/intern/subsurf_ccg.c
index 26bd981db4a..4b810059464 100644
--- a/source/blender/blenkernel/intern/subsurf_ccg.c
+++ b/source/blender/blenkernel/intern/subsurf_ccg.c
@@ -1146,71 +1146,62 @@ static void ccgDM_drawVerts(DerivedMesh *dm) {
 	ccgFaceIterator_free(fi);
 	glEnd();
 }
+
 static void ccgDM_drawEdges(DerivedMesh *dm, int drawLooseEdges, int UNUSED(drawAllEdges)) {
 	CCGDerivedMesh *ccgdm = (CCGDerivedMesh*) dm;
 	CCGSubSurf *ss = ccgdm->ss;
-	CCGEdgeIterator *ei = ccgSubSurf_getEdgeIterator(ss);
 	CCGFaceIterator *fi = ccgSubSurf_getFaceIterator(ss);
-	int i, edgeSize = ccgSubSurf_getEdgeSize(ss);
 	int gridSize = ccgSubSurf_getGridSize(ss);
+	int start, end, step;
 	int useAging;
 
 	ccgSubSurf_getUseAgeCounts(ss, &useAging, NULL, NULL, NULL);
 
-	for (; !ccgEdgeIterator_isStopped(ei); ccgEdgeIterator_next(ei)) {
-		CCGEdge *e = ccgEdgeIterator_getCurrent(ei);
-		DMGridData *edgeData = ccgSubSurf_getEdgeDataArray(ss, e);
-
-		if (!drawLooseEdges && !ccgSubSurf_getEdgeNumFaces(e))
-			continue;
-
-		if (useAging && !(G.f&G_BACKBUFSEL)) {
-			int ageCol = 255-ccgSubSurf_getEdgeAge(ss, e)*4;
-			glColor3ub(0, ageCol>0?ageCol:0, 0);
-		}
-
-		glBegin(GL_LINE_STRIP);
-		for (i=0; i<edgeSize-1; i++) {
-			glVertex3fv(edgeData[i].co);
-			glVertex3fv(edgeData[i+1].co);
-		}
-		glEnd();
-	}
+	/* nothing to do */
+	if(!drawLooseEdges && !ccgdm->drawInteriorEdges)
+		return;
 
 	if (useAging && !(G.f&G_BACKBUFSEL)) {
 		glColor3ub(0, 0, 0);
 	}
 
-	if (ccgdm->drawInteriorEdges) {
-		for (; !ccgFaceIterator_isStopped(fi); ccgFaceIterator_next(fi)) {
-			CCGFace *f = ccgFaceIterator_getCurrent(fi);
-			int S, x, y, numVerts = ccgSubSurf_getFaceNumVerts(f);
+	if(drawLooseEdges) {
+		start = 0;
+		end = gridSize;
+		step = gridSize - 1;
+	}
+	else if(ccgdm->drawInteriorEdges) {
+		start = 1;
+		end = gridSize - 1;
+		step = 1;
+	}
+
+	if(drawLooseEdges && ccgdm->drawInteriorEdges)
+		step = 1;
 
-			for (S=0; S<numVerts; S++) {
-				DMGridData *faceGridData = ccgSubSurf_getFaceGridDataArray(ss, f, S);
+	for (; !ccgFaceIterator_isStopped(fi); ccgFaceIterator_next(fi)) {
+		CCGFace *f = ccgFaceIterator_getCurrent(fi);
+		int S, x, y, numVerts = ccgSubSurf_getFaceNumVerts(f);
 
+		for (S=0; S<numVerts; S++) {
+			DMGridData *faceGridData = ccgSubSurf_getFaceGridDataArray(ss, f, S);
+
+			for (y=start; y<end; y+=step) {
 				glBegin(GL_LINE_STRIP);
 				for (x=0; x<gridSize; x++)
-					glVertex3fv(faceGridData[x].co);
+					glVertex3fv(faceGridData[y*gridSize + x].co);
+				glEnd();
+			}
+			for (x=start; x<end; x+=step) {
+				glBegin(GL_LINE_STRIP);
+				for (y=0; y<gridSize; y++)
+					glVertex3fv(faceGridData[y*gridSize + x].co);
 				glEnd();
-				for (y=1; y<gridSize-1; y++) {
-					glBegin(GL_LINE_STRIP);
-					for (x=0; x<gridSize; x++)
-						glVertex3fv(faceGridData[y*gridSize + x].co);
-					glEnd();
-				}
-				for (x=1; x<gridSize-1; x++) {
-					glBegin(GL_LINE_STRIP);
-					for (y=0; y<gridSize; y++)
-						glVertex3fv(faceGridData[y*gridSize + x].co);
-					glEnd();
-				}
 			}
 		}
 	}
 
 	ccgFaceIterator_free(fi);
-	ccgEdgeIterator_free(ei);
 }
 static void ccgDM_drawLooseEdges(DerivedMesh *dm) {
 	CCGDerivedMesh *ccgdm = (CCGDerivedMesh*) dm;
-- 
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