ModelingCloth.py 文件源码

def create_vertex_groups(groups=['common', 'not_used'], weights=[0.0, 0.0], ob=None):
    '''Creates vertex groups and sets weights. "groups" is a list of strings
    for the names of the groups. "weights" is a list of weights corresponding 
    to the strings. Each vertex is assigned a weight for each vertex group to
    avoid calling vertex weights that are not assigned. If the groups are
    already present, the previous weights will be preserved. To reset weights
    delete the created groups'''
    if ob is None:
        ob = bpy.context.object
    vg = ob.vertex_groups
    for g in range(0, len(groups)):
        if groups[g] not in vg.keys(): # Don't create groups if there are already there
            vg.new(groups[g])
            vg[groups[g]].add(range(0,len(ob.data.vertices)), weights[g], 'REPLACE')
        else:
            vg[groups[g]].add(range(0,len(ob.data.vertices)), 0, 'ADD') # This way we avoid resetting the weights for existing groups.