create_specific_rendermaterial.py

# DO NOT EDIT THIS FILE DIRECTLY. This is generated from a literate program
# with the VSCode extension Literate Programming (jesterking.literate).
#
# These literate programs are Rhino 3D scripts explaining how scripting works
# in Rhino 3D with Python.
#
# Read the literate programs at:
#    https://jesterking.github.io/literate
#
# This code is part of the repository:
#    https://github.com/jesterKing/rhipy
#
# The Literate Programming extension repository is at:
#    https://github.com/jesterKing/literate
#
# Licensed under Apache 2.0
# See https://github.com/jesterKing/rhipy/blob/master/LICENSE
#
# Copyright (C) Nathan 'jesterKing' Letwory
#

import System
import Rhino.Display
import Rhino.Render

import scriptcontext
import random

# get object selection
object_selection = [ob for ob in scriptcontext.doc.Objects if ob.IsSelected(False)]

# only if we have a selection do the work
if object_selection:
    # create material
    render_material = Rhino.Render.RenderContent.Create(
        Rhino.Render.RenderMaterial.PaintMaterialGuid,
        Rhino.Render.RenderContent.ShowContentChooserFlags.None,
        scriptcontext.doc)
    render_material.BeginChange(Rhino.Render.RenderContent.ChangeContexts.Program)
    render_material.Name = "PYSCRIPTCREATED " + System.Guid.NewGuid().ToString()
    random_color = Rhino.Display.Color4f(
        random.random(),
        random.random(),
        random.random(),
        1.0)
    render_material.SetParameter("color", random_color)
    render_material.EndChange()
    
    # assign
    for ob in object_selection:
        print("Adding material", render_material.Name, "to", ob)
        ob.RenderMaterial = render_material
        ob.CommitChanges()