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example_blender.py
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example_blender.py
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import numpy as np
import pyviz3d.visualizer as viz
def main():
# Load point cloud
data = np.load('examples/data/horse.npy')
r=-3.1415/2.0
rot_matrix = np.array(
[[1.0, 0.0, 0.0],[0.0, np.cos(r), -np.sin(r)],[0, np.sin(r), np.cos(r)]])
points = data[:, 0:3] @ rot_matrix
colors = np.ones_like(points) * 100
colors[:, 1] = 200
# Setting up the visualizer, including the camera parameters
v = viz.Visualizer(
position=np.array([0.0, 5.0, 2.0]),
look_at=np.array([0.0, 0.0, 0.0]),
up=np.array([0.0, 0.0, 1.0]),
focal_length=45.0,
animation=False)
# Add the point cloud
v.add_points('Horse', points, colors, point_size=15, visible=True)
# Add a white thin box below the point cloud for the shadow
v.add_bounding_box('background', np.array([0.0, 0.0, np.min(points[:, 2])]), np.array([3, 3, 0.001]))
# Save everything
blender_args = {'output_prefix': 'horse/horse_',
'executable_path': '/Applications/Blender.app/Contents/MacOS/Blender'}
v.save(f'example_blender', blender_args=blender_args)
if __name__ == '__main__':
main()