# Open3D: www.open3d.org

# The MIT License (MIT)

# See license file or visit www.open3d.org for details

# examples/python/visualization/load_save_viewpoint.py

import numpy as np

import open3d as o3d

def save_view_point(pcd, filename):

vis = o3d.visualization.Visualizer()

vis.create_window()

vis.add_geometry(pcd)

vis.run() # user changes the view and press "q" to terminate

param = vis.get_view_control().convert_to_pinhole_camera_parameters()

o3d.io.write_pinhole_camera_parameters(filename, param)

vis.destroy_window()

def load_view_point(pcd, filename):

vis = o3d.visualization.Visualizer()

vis.create_window()

ctr = vis.get_view_control()

param = o3d.io.read_pinhole_camera_parameters(filename)

vis.add_geometry(pcd)

ctr.convert_from_pinhole_camera_parameters(param)

vis.run()

vis.destroy_window()

if __name__ == "__main__":

pcd = o3d.io.read_point_cloud("../../test_data/fragment.pcd")

save_view_point(pcd, "viewpoint.json")

load_view_point(pcd, "viewpoint.json")