possible convert/create point group to prim group in python??

[efx]

Hi,

I have simple question.

Is it possible to convert or create point group from prim group in Python??

If not, I will use foreach sop though.... I just don't wanna use any other sop.

I would appreciate any help!!

Thanks

[efx]

Sorry Topic title should be

"possible convert/create point group from prim group in python??"

[symek]

You mean in PythonSOP? (it's not possible outside this node, as groups belong to geometry). You can do this explicitly by iterating over prims, like (not tested):

prims = hou.pwd().geometry().globPrims("mygroup")
pgroup = hou.pwd().geometry().createPointGroup("mypointgroup")

for prim in prims:
   for v in prim.vertices():
      if not pgroup.contains(v.point()): pgroup.add(v.point())

cheers,

skk.

[graham]

I seem to have this kicking around:

def primToPointGroup(geometry, prim_group, point_group_name=None, keep=False):
    """ Convert a primitive group to a point group. 

        If point_group_name is None, the new point group will have the
        same name as the primitive group.

        If keep is False, the original primitive group will be destroyed.
    """
    # Handle the name of the new group.
    if point_group_name is None:
        point_group = geometry.createPointGroup(prim_group.name())
    else:
        point_group = geometry.createPointGroup(point_group_name)
    # Iterate over each primitive in the group.
    for prim in prim_group.prims():
        # Iterate over each vertex in the primitive and add its referenced
        # point to the new group.
        for vert in prim.vertices():
            point_group.add(vert.point())

    # Destroy the source group.
    if not keep:
        prim_group.destroy()

    return point_group

Edited June 28, 2011 by graham

[efx]

Wow Thank you2 SO much !!

I did not expect this fast reply!!

I did not test it yet though,

I'm pretty sure the way graham shows will fit my situation and should work.

Again guys thanks a lot!!