73 lines
2.1 KiB
Python
Executable File
73 lines
2.1 KiB
Python
Executable File
# This file is part of libigl, a simple c++ geometry processing library.
|
|
#
|
|
# Copyright (C) 2017 Sebastian Koch <s.koch@tu-berlin.de> and Daniele Panozzo <daniele.panozzo@gmail.com>
|
|
#
|
|
# 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 = ["embree", "glfw"]
|
|
check_dependencies(dependencies)
|
|
|
|
|
|
# Mesh + AO values + Normals
|
|
V = igl.eigen.MatrixXd()
|
|
F = igl.eigen.MatrixXi()
|
|
AO = igl.eigen.MatrixXd()
|
|
N = igl.eigen.MatrixXd()
|
|
|
|
|
|
viewer = igl.glfw.Viewer()
|
|
|
|
|
|
def key_down(viewer, key, modifier):
|
|
|
|
color = igl.eigen.MatrixXd([[0.9, 0.85, 0.9]])
|
|
|
|
if key == ord('1'):
|
|
# Show the mesh without the ambient occlusion factor
|
|
viewer.data().set_colors(color)
|
|
elif key == ord('2'):
|
|
# Show the mesh with the ambient occlusion factor
|
|
C = color.replicate(V.rows(), 1)
|
|
for i in range(C.rows()):
|
|
C.setRow(i, C.row(i) * AO[i, 0])
|
|
viewer.data().set_colors(C)
|
|
elif key == ord('.'):
|
|
viewer.core.lighting_factor += 0.1
|
|
elif key == ord(','):
|
|
viewer.core.lighting_factor -= 0.1
|
|
else:
|
|
return False
|
|
|
|
viewer.core.lighting_factor = min(max(viewer.core.lighting_factor, 0.0), 1.0)
|
|
return True
|
|
|
|
|
|
print("Press 1 to turn off Ambient Occlusion\nPress 2 to turn on Ambient Occlusion\nPress . to turn up lighting\nPress , to turn down lighting")
|
|
|
|
# Load a surface mesh
|
|
igl.readOFF(TUTORIAL_SHARED_PATH + "fertility.off", V, F)
|
|
|
|
# Calculate vertex normals
|
|
igl.per_vertex_normals(V, F, N)
|
|
|
|
# Compute ambient occlusion factor using embree
|
|
igl.embree.ambient_occlusion(V, F, V, N, 500, AO)
|
|
AO = 1.0 - AO
|
|
|
|
# Plot the generated mesh
|
|
viewer.data().set_mesh(V, F)
|
|
key_down(viewer, ord('2'), 0)
|
|
viewer.callback_key_down = key_down
|
|
viewer.data().show_lines = False
|
|
viewer.core.lighting_factor = 0.0
|
|
viewer.launch()
|