.. 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_03_advanced_ui_viz_ui.py: =============== User Interfaces =============== This example shows how to use the UI API. We will demonstrate how to create several DIPY UI elements, then use a list box to toggle which element is shown. First, a bunch of imports. .. code-block:: default from fury.data import read_viz_icons, fetch_viz_icons from fury import ui, window Shapes ====== Let's start by drawing some simple shapes. First, a rectangle. .. code-block:: default rect = ui.Rectangle2D(size=(200, 200), position=(400, 300), color=(1, 0, 1)) Then we can draw a solid circle, or disk. .. code-block:: default disk = ui.Disk2D(outer_radius=50, center=(500, 500), color=(1, 1, 0)) Add an inner radius to make a ring. .. code-block:: default ring = ui.Disk2D(outer_radius=50, inner_radius=45, center=(500, 300), color=(0, 1, 1)) Image ===== Now let's display an image. First we need to fetch some icons that are included in DIPY. .. code-block:: default fetch_viz_icons() .. rst-class:: sphx-glr-script-out Out: .. code-block:: none Data size is approximately 12KB Dataset is already in place. If you want to fetch it again please first remove the folder /Users/koudoro/.fury/icons Now we can create an image container. .. code-block:: default img = ui.ImageContainer2D(img_path=read_viz_icons(fname='home3.png'), position=(450, 350)) Panel with buttons and text =========================== Let's create some buttons and text and put them in a panel. First we'll make the panel. .. code-block:: default panel = ui.Panel2D(size=(300, 150), color=(1, 1, 1), align="right") panel.center = (500, 400) Then we'll make two text labels and place them on the panel. Note that we specifiy the position with integer numbers of pixels. .. code-block:: default text = ui.TextBlock2D(text='Click me') text2 = ui.TextBlock2D(text='Me too') panel.add_element(text, (50, 100)) panel.add_element(text2, (180, 100)) Then we'll create two buttons and add them to the panel. Note that here we specify the positions with floats. In this case, these are percentages of the panel size. .. code-block:: default button_example = ui.Button2D( icon_fnames=[('square', read_viz_icons(fname='stop2.png'))]) icon_files = [] icon_files.append(('down', read_viz_icons(fname='circle-down.png'))) icon_files.append(('left', read_viz_icons(fname='circle-left.png'))) icon_files.append(('up', read_viz_icons(fname='circle-up.png'))) icon_files.append(('right', read_viz_icons(fname='circle-right.png'))) second_button_example = ui.Button2D(icon_fnames=icon_files) panel.add_element(button_example, (0.25, 0.33)) panel.add_element(second_button_example, (0.66, 0.33)) We can add a callback to each button to perform some action. .. code-block:: default def change_text_callback(i_ren, _obj, _button): text.message = 'Clicked!' i_ren.force_render() def change_icon_callback(i_ren, _obj, _button): _button.next_icon() i_ren.force_render() button_example.on_left_mouse_button_clicked = change_text_callback second_button_example.on_left_mouse_button_pressed = change_icon_callback Cube and sliders ================ Let's add a cube to the scene and control it with sliders. .. code-block:: default def cube_maker(color=(1, 1, 1), size=(0.2, 0.2, 0.2), center=(0, 0, 0)): cube = window.vtk.vtkCubeSource() cube.SetXLength(size[0]) cube.SetYLength(size[1]) cube.SetZLength(size[2]) if center is not None: cube.SetCenter(*center) cube_mapper = window.vtk.vtkPolyDataMapper() cube_mapper.SetInputConnection(cube.GetOutputPort()) cube_actor = window.vtk.vtkActor() cube_actor.SetMapper(cube_mapper) if color is not None: cube_actor.GetProperty().SetColor(color) return cube_actor cube = cube_maker(color=(0, 0, 1), size=(20, 20, 20), center=(15, 5, 0)) Now we'll add three sliders: one circular and two linear. .. code-block:: default ring_slider = ui.RingSlider2D(center=(740, 400), initial_value=0, text_template="{angle:5.1f}°") line_slider_x = ui.LineSlider2D(center=(500, 250), initial_value=0, min_value=-10, max_value=10, orientation="horizontal") line_slider_y = ui.LineSlider2D(center=(650, 350), initial_value=0, min_value=-10, max_value=10, orientation="vertical") We can use a callback to rotate the cube with the ring slider. .. code-block:: default def rotate_cube(slider): angle = slider.value previous_angle = slider.previous_value rotation_angle = angle - previous_angle cube.RotateX(rotation_angle) ring_slider.on_change = rotate_cube Similarly, we can translate the cube with line sliders. We use global variables to keep track of the position of the cube. .. code-block:: default cube_x = 0 cube_y = 0 def translate_cube_x(slider): global cube_x, cube_y cube_x = slider.value cube.SetPosition(cube_x, cube_y, 0) def translate_cube_y(slider): global cube_x, cube_y cube_y = slider.value cube.SetPosition(cube_x, cube_y, 0) line_slider_x.on_change = translate_cube_x line_slider_y.on_change = translate_cube_y Range Slider ============ Finally, we can add a range slider. This element is composed of two sliders. The first slider has two handles which let you set the range of the second. .. code-block:: default range_slider_x = ui.RangeSlider( line_width=8, handle_side=25, range_slider_center=(450, 450), value_slider_center=(450, 350), length=150, min_value=0, max_value=10, font_size=18, range_precision=2, value_precision=4, shape="square") range_slider_y = ui.RangeSlider( line_width=8, handle_side=25, range_slider_center=(750, 400), value_slider_center=(650, 400), length=150, min_value=0, max_value=10, font_size=18, range_precision=2, value_precision=4, orientation="vertical", shape="square") Select menu ============ We just added many examples. If we showed them all at once, they would fill the screen. Let's make a simple menu to choose which example is shown. We'll first make a list of the examples. .. code-block:: default examples = [[rect], [disk, ring], [img], [panel], [ring_slider, line_slider_x, line_slider_y], [range_slider_x, range_slider_y]] Now we'll make a function to hide all the examples. Then we'll call it so that none are shown initially. .. code-block:: default def hide_all_examples(): for example in examples: for element in example: element.set_visibility(False) cube.SetVisibility(False) hide_all_examples() To make the menu, we'll first need to create a list of labels which correspond with the examples. .. code-block:: default values = ['Rectangle', 'Disks', 'Image', "Button Panel", "Line & Ring Slider", "Range Slider"] Now we can create the menu. .. code-block:: default listbox = ui.ListBox2D(values=values, position=(10, 300), size=(300, 200), multiselection=False) Then we will use a callback to show the correct example when a label is clicked. .. code-block:: default def display_element(): hide_all_examples() example = examples[values.index(listbox.selected[0])] for element in example: element.set_visibility(True) if values.index(listbox.selected[0]) == 4: cube.SetVisibility(True) listbox.on_change = display_element Show Manager ================================== Now that all the elements have been initialised, we add them to the show manager. .. code-block:: default current_size = (800, 800) show_manager = window.ShowManager(size=current_size, title="DIPY UI Example") show_manager.scene.add(listbox) for example in examples: for element in example: show_manager.scene.add(element) show_manager.scene.add(cube) show_manager.scene.reset_camera() show_manager.scene.set_camera(position=(0, 0, 200)) show_manager.scene.reset_clipping_range() show_manager.scene.azimuth(30) # To interact with the UI, set interactive = True interactive = False if interactive: show_manager.start() window.record(show_manager.scene, size=current_size, out_path="viz_ui.png") .. image:: /auto_tutorials/03_advanced_ui/images/sphx_glr_viz_ui_001.png :class: sphx-glr-single-img .. rst-class:: sphx-glr-timing **Total running time of the script:** ( 0 minutes 0.186 seconds) .. _sphx_glr_download_auto_tutorials_03_advanced_ui_viz_ui.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: viz_ui.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: viz_ui.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_