forked from bartvdbraak/blender
95 lines
2.7 KiB
Python
95 lines
2.7 KiB
Python
#!BPY
|
|
"""
|
|
Name: 'Invert Active Group'
|
|
Blender: 245
|
|
Group: 'WeightPaint'
|
|
Tooltip: 'Invert the active vertex group'
|
|
"""
|
|
|
|
# --------------------------------------------------------------------------
|
|
# ***** BEGIN GPL LICENSE BLOCK *****
|
|
#
|
|
# 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 *****
|
|
# --------------------------------------------------------------------------
|
|
import Blender
|
|
from Blender import Scene, Mesh, Window, sys
|
|
|
|
import BPyMessages
|
|
import bpy
|
|
|
|
def vgroup_invert(ob_orig, me):
|
|
if not me.getVertGroupNames():
|
|
return
|
|
group_act = me.activeGroup
|
|
if group_act == None:
|
|
return
|
|
|
|
group_data = me.getVertsFromGroup(group_act, 1)
|
|
|
|
weights= [1.0] * len(me.verts) # 1.0 - initialize inverted
|
|
|
|
group_data = me.getVertsFromGroup(group_act, 1) # (i,w) tuples.
|
|
|
|
me.removeVertGroup(group_act) # messes up the active group.
|
|
for i,w in group_data:
|
|
weights[i] = 1.0-w
|
|
|
|
me.addVertGroup(group_act)
|
|
|
|
rep = Blender.Mesh.AssignModes.REPLACE
|
|
vertList= [None]
|
|
for i,weight in enumerate(weights):
|
|
vertList[0] = i
|
|
me.assignVertsToGroup(group_act, vertList, weight, rep)
|
|
|
|
me.activeGroup = group_act
|
|
me.update()
|
|
|
|
def main():
|
|
|
|
# Gets the current scene, there can be many scenes in 1 blend file.
|
|
sce = bpy.data.scenes.active
|
|
|
|
# Get the active object, there can only ever be 1
|
|
# and the active object is always the editmode object.
|
|
ob_act = sce.objects.active
|
|
|
|
if not ob_act or ob_act.type != 'Mesh':
|
|
BPyMessages.Error_NoMeshActive()
|
|
return
|
|
|
|
# Saves the editmode state and go's out of
|
|
# editmode if its enabled, we cant make
|
|
# changes to the mesh data while in editmode.
|
|
is_editmode = Window.EditMode()
|
|
Window.EditMode(0)
|
|
|
|
Window.WaitCursor(1)
|
|
me = ob_act.getData(mesh=1) # old NMesh api is default
|
|
t = sys.time()
|
|
|
|
# Run the mesh editing function
|
|
vgroup_invert(ob_act, me)
|
|
|
|
# Timing the script is a good way to be aware on any speed hits when scripting
|
|
print 'Invert VGroup in %.2f seconds' % (sys.time()-t)
|
|
Window.WaitCursor(0)
|
|
if is_editmode: Window.EditMode(1)
|
|
|
|
# This lets you can import the script without running it
|
|
if __name__ == '__main__':
|
|
main() |