Set V-Ray proxy geometry type

vraymesh_geomtype_from_selected.py

import maya.cmds as cmds


def set_selected_geotype(n):
    """ Source this function in Maya, then run one of the following:
    set_selected_geotype(n=0)  # Placeholder
    set_selected_geotype(n=1)  # Bounding box
    set_selected_geotype(n=2)  # Preview
    set_selected_geotype(n=3)  # Maya mesh
    set_selected_geotype(n=4)  # GPU Cache
    """
    for proxy in cmds.ls(sl=True, long=True):
        relatives = cmds.listRelatives(proxy, fullPath=True)
        for relative in relatives:
            connections = cmds.listConnections(relative, type='VRayMesh')
            if not isinstance(connections, type(None)):
                for obj in connections:
                    cmds.setAttr(obj+'.geomType', n)

vraymesh_geomtype_on_all_proxies.py

import maya.cmds as cmds

def set_all_geotype(n):
    """ Source this function in Maya, then run one of the following:
    set_all_geotype(n=0)  # Placeholder
    set_all_geotype(n=1)  # Bounding box
    set_all_geotype(n=2)  # Preview
    set_all_geotype(n=3)  # Maya mesh
    set_all_geotype(n=4)  # GPU Cache
    """
    for proxy in cmds.ls(type='VRayMesh', long=True):
        cmds.setAttr(proxy+'.geomType', n)