{
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    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
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      },
      "outputs": [],
      "source": [
        "%matplotlib inline"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "# Multiple Slider Widgets\n\nUse a class based callback to track multiple slider widgets for updating\na single mesh.\n\nIn this example we simply change a few parameters for the\n`pyvista.Sphere`{.interpreted-text role=\"func\"} method, but this could\neasily be applied to any mesh-generating/altering code.\n"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "import pyvista as pv\n\n\nclass MyCustomRoutine:\n    def __init__(self, mesh):\n        self.output = mesh  # Expected PyVista mesh type\n        # default parameters\n        self.kwargs = {\n            'radius': 0.5,\n            'theta_resolution': 30,\n            'phi_resolution': 30,\n        }\n\n    def __call__(self, param, value):\n        self.kwargs[param] = value\n        self.update()\n\n    def update(self):\n        # This is where you call your simulation\n        result = pv.Sphere(**self.kwargs)\n        self.output.copy_from(result)"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "starting_mesh = pv.Sphere()\nengine = MyCustomRoutine(starting_mesh)"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "p = pv.Plotter()\np.add_mesh(starting_mesh, show_edges=True)\np.add_slider_widget(\n    callback=lambda value: engine('phi_resolution', int(value)),\n    rng=[3, 60],\n    value=30,\n    title=\"Phi Resolution\",\n    pointa=(0.025, 0.1),\n    pointb=(0.31, 0.1),\n    style='modern',\n)\np.add_slider_widget(\n    callback=lambda value: engine('theta_resolution', int(value)),\n    rng=[3, 60],\n    value=30,\n    title=\"Theta Resolution\",\n    pointa=(0.35, 0.1),\n    pointb=(0.64, 0.1),\n    style='modern',\n)\np.add_slider_widget(\n    callback=lambda value: engine('radius', value),\n    rng=[0.1, 1.5],\n    value=0.5,\n    title=\"Radius\",\n    pointa=(0.67, 0.1),\n    pointb=(0.98, 0.1),\n    style='modern',\n)\np.show()"
      ]
    }
  ],
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      "display_name": "Python 3",
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      "codemirror_mode": {
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