.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "_gallery/validation/validate_line_thickness_space.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_thickness_space.py>`
        to download the full example code.

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

.. _sphx_glr__gallery_validation_validate_line_thickness_space.py:


Lines drawn with different thickness_space
==========================================

This example draws 3 rows of cubes, each with thickness 10, but each row in a
different thickness_space (and color). The left column is positioned directly in the
scene. The next two columns are smaller cubes, but placed in scaled containers.

* The red cubes have thickness in screen space, and all look the same.
* The green cubes have thickness in world space, and look the same, but thicker than the red.
* The blue cubes have thickness in model space, and become thicker in each column.

.. GENERATED FROM PYTHON SOURCE LINES 13-150



.. image-sg:: /_gallery/validation/images/sphx_glr_validate_line_thickness_space_001.webp
   :alt: validate line thickness space
   :srcset: /_gallery/validation/images/sphx_glr_validate_line_thickness_space_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)

    position_pairs = [
        [-1, -1, -1],
        [-1, -1, 1],
        [-1, -1, -1],
        [-1, 1, -1],
        [-1, -1, -1],
        [1, -1, -1],
        [1, 1, -1],
        [1, 1, 1],
        [1, 1, -1],
        [1, -1, -1],
        [1, 1, -1],
        [-1, 1, -1],
        [-1, 1, 1],
        [-1, 1, -1],
        [-1, 1, 1],
        [-1, -1, 1],
        [-1, 1, 1],
        [1, 1, 1],
        [1, -1, 1],
        [1, -1, -1],
        [1, -1, 1],
        [1, 1, 1],
        [1, -1, 1],
        [-1, -1, 1],
    ]
    position_pairs = 50 * np.array(position_pairs, np.float32)


    if True:  # use segment
        Material = gfx.LineSegmentMaterial
        positions = np.array(position_pairs, np.float32)
    else:  # use nans
        Material = gfx.LineMaterial
        positions = np.zeros((3 * len(position_pairs) // 2, 3), np.float32)
        positions[0::3] = position_pairs[0::2]
        positions[1::3] = position_pairs[1::2]
        positions[2::3] = np.nan


    def add_three_cubes(parent, material):
        line1 = gfx.Line(
            gfx.Geometry(positions=positions),
            material,
        )
        container1 = gfx.Scene()
        parent.add(container1.add(line1))

        line2 = gfx.Line(
            gfx.Geometry(positions=positions / 2),
            material,
        )
        container2 = gfx.Scene()
        parent.add(container2.add(line2))
        line2.local.scale = 2

        line3 = gfx.Line(
            gfx.Geometry(positions=positions / 3.3333),
            material,
        )
        container3 = gfx.Scene()
        parent.add(container3.add(line3))
        container3.local.scale = 3.3333
        # Positioning
        container1.local.position = -150, 0, 0
        container3.local.position = 150, 0, 0


    top = gfx.Scene()  # screen
    middle = gfx.Scene()  # world
    bottom = gfx.Scene()  # model

    top.local.position = 0, 150, 0
    bottom.local.position = 0, -150, 0

    scene = gfx.Scene()
    scene.add(top, middle, bottom)

    add_three_cubes(
        top,
        Material(
            thickness=10,
            thickness_space="screen",
            dash_pattern=[0, 2],
            color=(1.0, 0.0, 0.0),
            alpha_mode="blend",
            opacity=0.5,
            aa=True,
        ),
    )

    add_three_cubes(
        middle,
        Material(
            thickness=10,
            thickness_space="world",
            dash_pattern=[0, 2],
            color=(0.0, 1.0, 0.0),
            alpha_mode="blend",
            opacity=0.5,
            aa=True,
        ),
    )

    add_three_cubes(
        bottom,
        Material(
            thickness=10,
            thickness_space="model",
            dash_pattern=[0, 2],
            color=(0.0, 0.0, 1.0),
            alpha_mode="blend",
            opacity=0.5,
            aa=True,
        ),
    )

    camera = gfx.PerspectiveCamera(90)
    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 0.934 seconds)


.. _sphx_glr_download__gallery_validation_validate_line_thickness_space.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_thickness_space.ipynb <validate_line_thickness_space.ipynb>`

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

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

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

      :download:`Download zipped: validate_line_thickness_space.zip <validate_line_thickness_space.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_thickness_space.py"></iframe>