.. Comment: this file is automatically generated by `update_example_docs.py`.
   It should not be modified manually.

Lines
==========================================


Make a ball with some random line segments and splines.



.. code-block:: python
        :linenos:


        import time

        import numpy as np

        import viser


        def main() -> None:
            server = viser.ViserServer()

            # Line segments.
            #
            # This will be much faster than creating separate scene objects for
            # individual line segments or splines.
            N = 2000
            points = np.random.normal(size=(N, 2, 3)) * 3.0
            colors = np.random.randint(0, 255, size=(N, 2, 3))
            server.scene.add_line_segments(
                "/line_segments",
                points=points,
                colors=colors,
                line_width=3.0,
            )

            # Spline helpers.
            #
            # If many lines are needed, it'll be more efficient to batch them in
            # `add_line_segments()`.
            for i in range(10):
                points = np.random.normal(size=(30, 3)) * 3.0
                server.scene.add_spline_catmull_rom(
                    f"/catmull/{i}",
                    positions=points,
                    tension=0.5,
                    line_width=3.0,
                    color=np.random.uniform(size=3),
                    segments=100,
                )

                control_points = np.random.normal(size=(30 * 2 - 2, 3)) * 3.0
                server.scene.add_spline_cubic_bezier(
                    f"/cubic_bezier/{i}",
                    positions=points,
                    control_points=control_points,
                    line_width=3.0,
                    color=np.random.uniform(size=3),
                    segments=100,
                )

            while True:
                time.sleep(10.0)


        if __name__ == "__main__":
            main()