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# ----------------------------------------------------------------------------
# - Open3D: www.open3d.org -
# ----------------------------------------------------------------------------
# Copyright (c) 2018-2024 www.open3d.org
# SPDX-License-Identifier: MIT
# ----------------------------------------------------------------------------
import numpy as np
import open3d as o3d
import open3d.visualization.gui as gui
import open3d.visualization.rendering as rendering
def make_point_cloud(npts, center, radius):
pts = np.random.uniform(-radius, radius, size=[npts, 3]) + center
cloud = o3d.geometry.PointCloud()
cloud.points = o3d.utility.Vector3dVector(pts)
colors = np.random.uniform(0.0, 1.0, size=[npts, 3])
cloud.colors = o3d.utility.Vector3dVector(colors)
return cloud
def high_level():
app = gui.Application.instance
app.initialize()
points = make_point_cloud(100, (0, 0, 0), 1.0)
vis = o3d.visualization.O3DVisualizer("Open3D - 3D Text", 1024, 768)
vis.show_settings = True
vis.add_geometry("Points", points)
for idx in range(0, len(points.points)):
vis.add_3d_label(points.points[idx], "{}".format(idx))
vis.reset_camera_to_default()
app.add_window(vis)
app.run()
def low_level():
app = gui.Application.instance
app.initialize()
points = make_point_cloud(100, (0, 0, 0), 1.0)
w = app.create_window("Open3D - 3D Text", 1024, 768)
widget3d = gui.SceneWidget()
widget3d.scene = rendering.Open3DScene(w.renderer)
mat = rendering.MaterialRecord()
mat.shader = "defaultUnlit"
mat.point_size = 5 * w.scaling
widget3d.scene.add_geometry("Points", points, mat)
for idx in range(0, len(points.points)):
l = widget3d.add_3d_label(points.points[idx], "{}".format(idx))
l.color = gui.Color(points.colors[idx][0], points.colors[idx][1],
points.colors[idx][2])
l.scale = np.random.uniform(0.5, 3.0)
bbox = widget3d.scene.bounding_box
widget3d.setup_camera(60.0, bbox, bbox.get_center())
w.add_child(widget3d)
app.run()
if __name__ == "__main__":
high_level()
low_level()
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