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# # Top of main python script
# import os
# os.environ['PYOPENGL_PLATFORM'] = 'egl'
# import pyrender
# import numpy as np
# r = pyrender.OffscreenRenderer(viewport_width=640,
# viewport_height=480,
# point_size=1.0)
# cam = pyrender.PerspectiveCamera(yfov=np.pi / 3.0, aspectRatio=1.414)
# scene = pyrender.Scene(ambient_light=[0.02, 0.02, 0.02],
# bg_color=[1.0, 1.0, 1.0])
# scene.add(cam, pose=np.eye(4))
# color, depth = r.render(scene)
# print(color)
# print(depth)
import os
# switch to "osmesa" or "egl" before loading pyrender
os.environ["PYOPENGL_PLATFORM"] = "egl"
import numpy as np
import pyrender
import trimesh
import matplotlib.pyplot as plt
# generate mesh
sphere = trimesh.creation.icosphere(subdivisions=4, radius=0.8)
sphere.vertices+=1e-2*np.random.randn(*sphere.vertices.shape)
mesh = pyrender.Mesh.from_trimesh(sphere, smooth=False)
# compose scene
scene = pyrender.Scene(ambient_light=[.1, .1, .3], bg_color=[0, 0, 0])
camera = pyrender.PerspectiveCamera( yfov=np.pi / 3.0)
light = pyrender.DirectionalLight(color=[1,1,1], intensity=2e3)
scene.add(mesh, pose= np.eye(4))
scene.add(light, pose= np.eye(4))
c = 2**-0.5
scene.add(camera, pose=[[ 1, 0, 0, 0],
[ 0, c, -c, -2],
[ 0, c, c, 2],
[ 0, 0, 0, 1]])
# render scene
r = pyrender.OffscreenRenderer(512, 512)
color, _ = r.render(scene)
plt.figure(figsize=(8,8))
plt.imshow(color)
plt.savefig("test.png") |