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

.. only:: html

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

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

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

.. _sphx_glr__gallery_feature_demo_image_plus_points.py:


Image with Points Overlaid
==========================

Show an image with points overlaid.

.. GENERATED FROM PYTHON SOURCE LINES 7-57



.. image-sg:: /_gallery/feature_demo/images/sphx_glr_image_plus_points_001.webp
   :alt: image plus points
   :srcset: /_gallery/feature_demo/images/sphx_glr_image_plus_points_001.webp
   :class: sphx-glr-single-img





.. code-block:: Python



    import imageio.v3 as iio
    from rendercanvas.auto import RenderCanvas, loop
    import pygfx as gfx
    import numpy as np

    canvas = RenderCanvas()
    renderer = gfx.renderers.WgpuRenderer(canvas)
    scene = gfx.Scene()

    # add image

    im = iio.imread("imageio:astronaut.png")

    image = gfx.Image(
        gfx.Geometry(grid=gfx.Texture(im, dim=2)),
        gfx.ImageBasicMaterial(clim=(0, 255)),
    )
    scene.add(image)

    # add points

    xx = [182, 180, 161, 153, 191, 237, 293, 300, 272, 267, 254]
    yy = [145, 131, 112, 59, 29, 14, 48, 91, 136, 137, 172]
    sizes = np.arange(1, len(xx) + 1, dtype=np.float32)

    points = gfx.Points(
        gfx.Geometry(
            positions=[(x, y, 1) for x, y in zip(xx, yy, strict=True)],
            sizes=sizes,
        ),
        gfx.PointsMaterial(
            color=(0, 1, 1, 1),
            size=10,
            size_space="world",
            size_mode="vertex",
        ),
    )
    scene.add(points)

    camera = gfx.PerspectiveCamera(0)
    camera.local.scale_y = -1
    camera.show_object(scene, match_aspect=True, scale=1.05)

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

    if __name__ == "__main__":
        canvas.request_draw(lambda: renderer.render(scene, camera))
        loop.run()


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

   **Total running time of the script:** (0 minutes 0.408 seconds)


.. _sphx_glr_download__gallery_feature_demo_image_plus_points.py:

.. only:: html

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

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

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

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

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

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

      :download:`Download zipped: image_plus_points.zip <image_plus_points.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#image_plus_points.py"></iframe>