.. note:: :class: sphx-glr-download-link-note Click :ref:`here ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_auto_tutorials_01_introductory_viz_earth_animation.py: ========================= Texture Sphere Animation ========================= In this tutorial, we will show how to animate a textured sphere. .. code-block:: default import itertools from fury import window, actor, utils, io from fury.data import read_viz_textures, fetch_viz_textures from fury.data import read_viz_models, fetch_viz_models Create a scene to start. .. code-block:: default scene = window.Scene() Next, load in a texture for each of the actors. For this tutorial, we will be creating one textured sphere for the Earth, and another for the moon. Collect the Earth texture from the FURY github using ``fetch_viz_textures`` and ``read_viz_textures``, then use ``io.load_image`` to load in the image. .. code-block:: default fetch_viz_textures() earth_filename = read_viz_textures("1_earth_8k.jpg") earth_image = io.load_image(earth_filename) .. rst-class:: sphx-glr-script-out Out: .. code-block:: none Dataset is already in place. If you want to fetch it again please first remove the folder /Users/koudoro/.fury/textures Using ``actor.texture_on_sphere()``, create an earth_actor with your newly loaded texture. .. code-block:: default earth_actor = actor.texture_on_sphere(earth_image) Then, do the same for the moon. .. code-block:: default moon_filename = read_viz_textures("moon-8k.jpg") moon_image = io.load_image(moon_filename) moon_actor = actor.texture_on_sphere(moon_image) Add both actors to the already existing scene. .. code-block:: default scene.add(earth_actor) scene.add(moon_actor) Next, alter the position and scale of the moon to correctly size it in comparison to the Earth using ``actor.SetPosition()`` and ``actor.SetScale()``, and rotate the Earth using ``utils.rotate`` to correctly align the texture. .. code-block:: default moon_actor.SetPosition(1, 0.1, 0.5) moon_actor.SetScale(0.25, 0.25, 0.25) utils.rotate(earth_actor, (-90, 1, 0, 0)) The ShowManager class is the interface between the scene, the window and the interactor. .. code-block:: default showm = window.ShowManager(scene, size=(900, 768), reset_camera=False, order_transparent=True) Next, let's focus on creating the animation. We can determine the duration of animation with using the ``counter``. Use itertools to avoid global variables. .. code-block:: default counter = itertools.count() Use ``set_camera`` to ensure the camera is in the optimal position for the scene. .. code-block:: default scene.set_camera(position=(0.24, 0.00, 4.34), focal_point=(0.00, 0.00, 0.00), view_up=(0.00, 1.00, 0.00)) Let's create a sphere actor to add to the Earth. We will place this sphere on the Earth's surface on Bloomington, IN, home of FURY's headquarters! .. code-block:: default center = [[-0.39, 0.3175, 0.025]] radius = 0.002 sphere_actor = actor.sphere(center, window.colors.blue_medium, radius) Also creating a text actor to add below the sphere. .. code-block:: default text_actor = actor.text_3d("Bloomington, Indiana", (-0.42, 0.31, 0.03), window.colors.white, 0.004) utils.rotate(text_actor, (-90, 0, 1, 0)) Let's also import a model of a satellite to visualize circling the moon. .. code-block:: default fetch_viz_models() satellite_filename = read_viz_models("satellite_obj.obj") satellite = io.load_polydata(satellite_filename) satellite_actor = utils.get_actor_from_polydata(satellite) satellite_actor.SetPosition(-0.75, 0.1, 0.4) satellite_actor.SetScale(0.005, 0.005, 0.005) .. rst-class:: sphx-glr-script-out Out: .. code-block:: none Dataset is already in place. If you want to fetch it again please first remove the folder /Users/koudoro/.fury/models In the ``timer_callback`` function, use if statements to specify when certain events will happen in the animation, based on the position that the counter is at. So, for example, the earth actor will continue to rotate while the count is less than 450. .. code-block:: default def timer_callback(_obj, _event): cnt = next(counter) showm.render() if cnt < 450: utils.rotate(earth_actor, (1, 0, 1, 0)) if cnt % 5 == 0 and cnt < 450: showm.scene.azimuth(-1) if cnt == 300: scene.set_camera(position=(-3.679, 0.00, 2.314), focal_point=(0.0, 0.35, 0.00), view_up=(0.00, 1.00, 0.00)) if cnt > 300 and cnt < 450: scene.zoom(1.01) if cnt >= 450 and cnt < 1500: scene.add(sphere_actor) scene.add(text_actor) if cnt >= 450 and cnt < 550: scene.zoom(1.01) if cnt == 575: moon_actor.SetPosition(-1, 0.1, 0.5) scene.set_camera(position=(-0.5, 0.1, 0.00), focal_point=(-1, 0.1, 0.5), view_up=(0.00, 1.00, 0.00)) scene.zoom(0.03) scene.add(satellite_actor) utils.rotate(satellite_actor, (180, 0, 1, 0)) scene.rm(earth_actor) if cnt > 575 and cnt < 750: showm.scene.azimuth(-2) utils.rotate(moon_actor, (-2, 0, 1, 0)) satellite_actor.SetPosition(-0.8, 0.1-cnt/10000, 0.4) if cnt >= 750 and cnt < 1100: showm.scene.azimuth(-2) utils.rotate(moon_actor, (-2, 0, 1, 0)) satellite_actor.SetPosition(-0.8, -0.07+cnt/10000, 0.4) if cnt == 1100: showm.exit() Watch your new animation take place! .. code-block:: default showm.initialize() showm.add_timer_callback(True, 35, timer_callback) showm.start() window.record(showm.scene, size=(900, 768), out_path="viz_earth_animation.png") .. image:: /auto_tutorials/01_introductory/images/sphx_glr_viz_earth_animation_001.png :class: sphx-glr-single-img .. rst-class:: sphx-glr-timing **Total running time of the script:** ( 0 minutes 40.325 seconds) .. _sphx_glr_download_auto_tutorials_01_introductory_viz_earth_animation.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: viz_earth_animation.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: viz_earth_animation.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_