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#!BPY
"""
Name: 'Bone Weight Copy'
Blender: 241
Group: 'Object'
Tooltip: 'Copy Bone Weights from 1 weighted mesh, to other unweighted meshes.'
"""
import Blender
from Blender import Armature, Object, Mathutils, Window, Mesh
Vector= Mathutils.Vector
def copy_bone_influences(_from, _to):
ob_from, me_from, world_verts_from, from_groups= _from
ob_to, me_to, world_verts_to, dummy= _to
del dummy
def getSnapIdx(vec, vecs):
'''
Returns the closest vec to snap_points
'''
close_dist= 1<<30
close_idx= None
x,y,z= tuple(vec)
for i, v in enumerate(vecs):
# quick length cmp before a full length comparison.
if\
abs(x-v[0]) < close_dist and\
abs(y-v[1]) < close_dist and\
abs(z-v[2]) < close_dist:
l= (v-vec).length
if l<close_dist:
close_dist= l
close_idx= i
return close_idx
from_groups= me_from.getVertGroupNames()
for group in from_groups:
me_to.addVertGroup(group)
add_ = Mesh.AssignModes.ADD
for i, co in enumerate(world_verts_to):
from_idx= getSnapIdx(co, world_verts_from)
from_infs= me_from.getVertexInfluences(from_idx)
for group, weight in from_infs:
me_to.assignVertsToGroup(group, [from_idx], weight, add_)
me_to.update()
def worldspace_verts(me, ob):
mat= ob.matrixWorld
def worldvert(v):
vec= Vector(v)
vec.resize4D()
vec= vec*mat
vec.resize3D()
return vec
return [ worldvert(v.co) for v in me.verts ]
def main():
sel=[]
from_data= None
for ob in Object.GetSelected():
if ob.getType()=='Mesh':
me= ob.getData(mesh=1)
groups= me.getVertGroupNames()
data= (ob, me, worldspace_verts(me, ob), groups)
if groups:
if from_data:
Blender.Draw.PupMenu('More then 1 mesh has vertex weights, only select 1 mesh with weights. aborting.')
return
else:
from_data= data
else:
sel.append(data)
if not sel or from_data==None:
Blender.Draw.PupMenu('Select 2 or more mesh objects, aborting.')
return
Window.WaitCursor(1)
# Now do the copy.
for data in sel:
copy_bone_influences(from_data, data)
Window.WaitCursor(0)
if __name__ == '__main__':
main()
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