Added vertex weight python scripts accessable from the paint menu.

* clean weights (removed low weights)
* normalize, maximizes weights to a user set peak, optionaly scales other groups too to keep the proportion of the weights even. (Doubles as a weight scaler)
* Grow/Shrink, uses the mesh topology to expand/contract the vert weights. a few options for iterationsm, max length and strength.
I need a way tell if the users in Face Select mode (in python) so I can make use of the selected face flag.

1 files changed, 90 insertions, 0 deletions

diff --git a/release/scripts/weightpaint_clean.py b/release/scripts/weightpaint_clean.py
new file mode 100644
index 00000000000..d23b4ec916f
--- /dev/null
+++ b/release/scripts/weightpaint_clean.py
@@ -0,0 +1,90 @@
+#!BPY
+"""
+Name: 'Clean Weight...'
+Blender: 241
+Group: 'WeightPaint'
+Tooltip: 'Removed verts from groups below a weight limit.'
+"""
+
+__author__ = ["Campbell Barton"]
+__url__ = ("blender", "elysiun", "http://members.iinet.net.au/~cpbarton/ideasman/")
+__version__ = "0.1"
+__bpydoc__ = """\
+
+Clean Weight
+
+This Script is to be used only in weight paint mode,
+It removes very low weighted verts from the current group with a weight option.
+"""
+
+# ***** BEGIN GPL LICENSE BLOCK *****
+#
+# Script copyright (C) Campbell J Barton
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+# ***** END GPL LICENCE BLOCK *****
+# --------------------------------------------------------------------------
+
+from Blender import Scene, Draw
+import BPyMesh
+SMALL_NUM= 0.000001
+def actWeightNormalize(me, PREF_THRESH, PREF_KEEP_SINGLE):
+	
+	groupNames, vWeightDict= BPyMesh.meshWeight2Dict(me)
+	act_group= me.activeGroup
+	
+	for wd in vWeightDict:
+		if not PREF_KEEP_SINGLE or len(wd) > 1:
+			try:
+				w= wd[act_group]
+				if w <= PREF_THRESH:
+					# small weight, remove.
+					del wd[act_group]
+			except:
+				pass
+	
+	# Copy weights back to the mesh.
+	BPyMesh.dict2MeshWeight(me, groupNames, vWeightDict)
+
+
+def main():
+	scn= Scene.GetCurrent()
+	ob= scn.getActiveObject()
+	
+	if not ob or ob.getType() != 'Mesh':
+		Draw.PupMenu('Error, no active mesh object, aborting.')
+		return
+	
+	me= ob.getData(mesh=1)
+	
+	PREF_PEAKWEIGHT= Draw.Create(0.005)
+	PREF_KEEP_SINGLE= Draw.Create(1)
+	
+	pup_block= [\
+	('Peak Weight:', PREF_PEAKWEIGHT, 0.01, 1.0, 'Upper weight for normalizing.'),\
+	('Keep Single User', PREF_KEEP_SINGLE, 'Dont remove verts that are in this group only.'),\
+	]
+	
+	if not Draw.PupBlock('Clean Selected Meshes...', pup_block):
+		return
+	
+	PREF_PEAKWEIGHT= PREF_PEAKWEIGHT.val
+	PREF_KEEP_SINGLE= PREF_KEEP_SINGLE.val
+	
+	actWeightNormalize(me, PREF_PEAKWEIGHT, PREF_KEEP_SINGLE)
+	
+if __name__=='__main__':
+	main()
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