[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [14318] trunk/blender/source/blender/src/ sculptmode.c: Sculpts calc_area_normal() could result in a zero length vector if all faces were pointing away from the view .
Campbell Barton
ideasman42 at gmail.com
Wed Apr 2 18:19:13 CEST 2008
Revision: 14318
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=14318
Author: campbellbarton
Date: 2008-04-02 18:19:12 +0200 (Wed, 02 Apr 2008)
Log Message:
-----------
Sculpts calc_area_normal() could result in a zero length vector if all faces were pointing away from the view.
deal with this by making 2 average vectors, one for front pointing faces, and another for back pointing faces,
also removed an unneeded acos().
Modified Paths:
--------------
trunk/blender/source/blender/src/sculptmode.c
Modified: trunk/blender/source/blender/src/sculptmode.c
===================================================================
--- trunk/blender/source/blender/src/sculptmode.c 2008-04-02 15:03:03 UTC (rev 14317)
+++ trunk/blender/source/blender/src/sculptmode.c 2008-04-02 16:19:12 UTC (rev 14318)
@@ -418,14 +418,17 @@
}
}
-void add_norm_if(const BrushAction *a, float out[3], const short no[3])
+static void add_norm_if(const BrushAction *a, float out[3], float out_flip[3], const short no[3])
{
float fno[3] = {no[0], no[1], no[2]};
Normalize(fno);
- if(acos(Inpf(((BrushAction*)a)->symm.out, fno)) < M_PI_2)
+ if((Inpf(((BrushAction*)a)->symm.out, fno)) < 0) {
VecAddf(out, out, fno);
+ } else if (out[0]==0.0 && out[1]==0.0 && out[2]==0.0) {
+ VecAddf(out_flip, out_flip, fno); /* out_flip is used when out is {0,0,0} */
+ }
}
/* Currently only for the draw brush; finds average normal for all active
@@ -435,18 +438,23 @@
Mesh *me = get_mesh(OBACT);
ActiveData *node = active_verts->first;
const int view = sculpt_data()->brush_type==DRAW_BRUSH ? sculptmode_brush()->view : 0;
+ float out_flip[3];
+
+ out[0]=out[1]=out[2] = out_flip[0]=out_flip[1]=out_flip[2] = 0;
- out[0] = out[1] = out[2] = 0;
-
if(sculptmode_brush()->flag & SCULPT_BRUSH_ANCHORED) {
for(; node; node = node->next)
- add_norm_if(a, out, a->orig_norms[node->Index]);
+ add_norm_if(a, out, out_flip, a->orig_norms[node->Index]);
}
else {
for(; node; node = node->next)
- add_norm_if(a, out, me->mvert[node->Index].no);
+ add_norm_if(a, out, out_flip, me->mvert[node->Index].no);
}
+ if (out[0]==0.0 && out[1]==0.0 && out[2]==0.0) {
+ VECCOPY(out, out_flip);
+ }
+
Normalize(out);
if(outdir) {
@@ -690,9 +698,11 @@
VecSubf(val, intr, co);
VecMulf(val, node->Fade);
VecAddf(val, val, co);
-
+
sculpt_clip(a, co, val);
-
+ if (isnan(co[0]) || isnan(co[1]) || isnan(co[2])) {
+ printf("NAN\n");
+ }
node= node->next;
}
}
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