refactor(code): add slider in VolumePicker example

Kitware · Nov 1, 2023 · 24dd369 · 24dd369
1 parent 1f48bdc
commit 24dd369
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Showing 4 changed files with 25 additions and 2 deletions.
diff --git a/Examples/Volume/VolumePicker/controlPanel.html b/Examples/Volume/VolumePicker/controlPanel.html
@@ -25,4 +25,8 @@
           </td>
         </tr>
     </tr>
+    <tr>
+      <label id="opacityLabel">Opacity (0.0001)</label>
+      <input id='opacity' type="range" min="0.001" max="0.8" step="0.005" value="0.001" />
+    </tr>
 </table>
diff --git a/Examples/Volume/VolumePicker/index.js b/Examples/Volume/VolumePicker/index.js
@@ -219,6 +219,18 @@ renderWindow.getInteractor().onRightButtonPress((callData) => {
   renderWindow.render();
 });
 
+function setOpacityFromSlider(opacityValue) {
+  picker.setOpacityThreshold(opacityValue);
+}
+
+const opacity = document.getElementById('opacity');
+const opacityLabel = document.getElementById('opacityLabel');
+
+opacity.addEventListener('input', () => {
+  setOpacityFromSlider(Number.parseFloat(opacity.value, 10));
+  opacityLabel.innerHTML = `Opacity ( ${opacity.value} )`;
+});
+
 // -----------------------------------------------------------
 // Make some variables global so that you can inspect and
 // modify objects in your browser's developer console:

diff --git a/Sources/Rendering/Core/CellPicker/index.d.ts b/Sources/Rendering/Core/CellPicker/index.d.ts
@@ -46,7 +46,12 @@ export interface vtkCellPicker extends vtkPicker {
 	/**
 	 * Get the opacity threshold for volume picking
 	 */
-	getOpacityThreshold(): number[];
+	getOpacityThreshold(): number;
+
+	/**
+	 * Get the opacity threshold for volume picking
+	 */
+	setOpacityThreshold(value: number);
 
 	/**
 	 * Get the parametric coordinates of the picked cell.

diff --git a/Sources/Rendering/Core/CellPicker/index.js b/Sources/Rendering/Core/CellPicker/index.js
@@ -571,8 +571,10 @@ export function extend(publicAPI, model, initialValues = {}) {
     'mapperNormal',
     'pCoords',
     'cellIJK',
-    'opacityThreshold',
   ]);
+
+  macro.setGet(publicAPI, model, ['opacityThreshold']);
+
   macro.get(publicAPI, model, ['cellId']);
 
   // Object methods