.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "_gallery/validation/validate_line_dash.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download__gallery_validation_validate_line_dash.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr__gallery_validation_validate_line_dash.py:


Dashing
=======

* Demoing densely sampled lines with dashing.
* Thicker lines show the same pattern (i.e. dash phase increases with thickness).
* Dash offset is expressed in same space as the pattern.

.. GENERATED FROM PYTHON SOURCE LINES 9-91



.. image-sg:: /_gallery/validation/images/sphx_glr_validate_line_dash_001.webp
   :alt: validate line dash
   :srcset: /_gallery/validation/images/sphx_glr_validate_line_dash_001.webp
   :class: sphx-glr-single-img





.. code-block:: Python



    import numpy as np
    from rendercanvas.auto import RenderCanvas, loop
    import pygfx as gfx


    canvas = RenderCanvas(size=(1000, 1000))
    renderer = gfx.WgpuRenderer(canvas)

    x = np.linspace(0, 4 * np.pi, 1000)
    y = np.sin(x)


    positions = np.array([x * 100, y * 100, np.zeros_like(x)], np.float32).T.copy()

    geometry = gfx.Geometry(positions=positions)

    line1 = gfx.Line(
        geometry,
        gfx.LineMaterial(
            thickness=12,
            dash_pattern=[0, 2, 2, 2],
            color=(0.0, 1.0, 1.0, 0.4),
            dash_offset=0,
            aa=True,
        ),
    )

    line2 = gfx.Line(
        geometry,
        gfx.LineMaterial(
            thickness=12,
            dash_pattern=[0, 2, 2, 2],
            color=(0.0, 1.0, 1.0, 0.4),
            dash_offset=2,
            aa=True,
        ),
    )
    line3 = gfx.Line(
        geometry,
        gfx.LineMaterial(
            thickness=24,
            dash_pattern=[0, 2, 2, 2],
            color=(0.0, 1.0, 1.0, 0.4),
            dash_offset=3,
            aa=True,
        ),
    )

    line4 = gfx.Line(
        geometry,
        gfx.LineMaterial(
            thickness=24,
            dash_pattern=[0, 2, 2, 2],
            color=(0.0, 1.0, 1.0, 0.4),
            dash_offset=6,
            aa=True,
        ),
    )

    for line in (line1, line2, line3, line4):
        line.material.thickness_space = "screen"

    line1.local.position = 0, 0, 0
    line2.local.position = 0, -500, 0
    line3.local.position = 0, -1000, 0
    line4.local.position = 0, -1500, 0

    scene = gfx.Scene()
    scene.add(line1, line2, line3, line4)

    camera = gfx.OrthographicCamera()
    camera.show_object(scene)

    controller = gfx.OrbitController(camera, register_events=renderer)

    canvas.request_draw(lambda: renderer.render(scene, camera))

    if __name__ == "__main__":
        print(__doc__)
        loop.run()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 0.503 seconds)


.. _sphx_glr_download__gallery_validation_validate_line_dash.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: validate_line_dash.ipynb <validate_line_dash.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: validate_line_dash.py <validate_line_dash.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: validate_line_dash.zip <validate_line_dash.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_

.. only:: html

    Interactive example
    -------------------

    Try this example in your browser using Pyodide. Might not work with all examples and all devices. Check the output and your browser's console for details.

    .. raw:: html

        <iframe src="./../pyodide.html#validate_line_dash.py"></iframe>