libigl/python/tutorial/104_Colors.py

# This file is part of libigl, a simple c++ geometry processing library.
#
# Copyright (C) 2017 Sebastian Koch <[email protected]> and Daniele Panozzo <[email protected]>
#
# This Source Code Form is subject to the terms of the Mozilla Public License
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at http://mozilla.org/MPL/2.0/.
import sys, os

# Add the igl library to the modules search path
sys.path.insert(0, os.getcwd() + "/../")
import pyigl as igl

from shared import TUTORIAL_SHARED_PATH, check_dependencies

dependencies = ["viewer"]
check_dependencies(dependencies)


V = igl.eigen.MatrixXd()
F = igl.eigen.MatrixXi()
C = igl.eigen.MatrixXd()

# Load a mesh in OFF format
igl.readOFF(TUTORIAL_SHARED_PATH + "screwdriver.off", V, F)

# Plot the mesh
viewer = igl.viewer.Viewer()
viewer.data.set_mesh(V, F)

# Use the z coordinate as a scalar field over the surface
Z = V.col(2)

# Compute per-vertex colors
igl.jet(Z, True, C)

# Add per-vertex colors
viewer.data.set_colors(C)

# Launch the viewer
viewer.launch()