docs(example): pv roi

examples/07_paraview/WaveletROI/app.py

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+from trame.app import get_server
+from trame.ui.vuetify3 import SinglePageWithDrawerLayout
+from trame.widgets import vuetify3 as v3, paraview as pv_widgets
+from trame.decorators import TrameApp, change
+
+from paraview import simple
+
+
+@TrameApp()
+class App:
+    def __init__(self, server=None):
+        self.server = get_server(server, client_type="vue3")
+
+        # PV pipeline
+        self.source = simple.Wavelet()
+        self.extract = simple.ExtractSubset(
+            Input=self.source,
+            VOI=[-10, 10, -10, 10, -10, 10],
+        )
+        self.representation = simple.Show(self.extract)
+        self.representation.SetRepresentationType("Volume")
+        self.view = simple.Render()
+
+        self._build_ui()
+
+    @property
+    def state(self):
+        return self.server.state
+
+    @property
+    def ctrl(self):
+        return self.server.controller
+
+    @change("i_range", "j_range", "k_range")
+    def update_roi(self, i_range, j_range, k_range, **_):
+        self.extract.VOI = [*i_range, *j_range, *k_range]
+        self.ctrl.view_update()
+
+    def _build_ui(self):
+        with SinglePageWithDrawerLayout(self.server, full_height=True) as layout:
+            with layout.drawer as drawer:
+                drawer.width = 300
+                with v3.VCol():
+                    v3.VRangeSlider(
+                        v_model=("i_range", [-10, 10]),
+                        min=-10,
+                        max=10,
+                        step=1,
+                        density="compact",
+                        hide_details=True,
+                    )
+                    v3.VRangeSlider(
+                        v_model=("j_range", [-10, 10]),
+                        min=-10,
+                        max=10,
+                        step=1,
+                        density="compact",
+                        hide_details=True,
+                    )
+                    v3.VRangeSlider(
+                        v_model=("k_range", [-10, 10]),
+                        min=-10,
+                        max=10,
+                        step=1,
+                        density="compact",
+                        hide_details=True,
+                    )
+
+            with layout.content:
+                with v3.VContainer(fluid=True, classes="fill-height"):
+                    with pv_widgets.VtkRemoteView(
+                        self.view, interactive_ratio=1
+                    ) as view:
+                        self.ctrl.view_update = view.update
+                        self.ctrl.view_reset_camera = view.reset_camera
+
+
+def main():
+    app = App()
+    app.server.start()
+
+
+if __name__ == "__main__":
+    main()

examples/07_paraview/WaveletROI/requirements.txt

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+trame
+trame-vtk
+trame-vuetify