fix(InteractorStyleImage): stop mouse move slicing during wheel

Sources/Interaction/Style/InteractorStyleImage/index.js

@@ -89,16 +89,6 @@ function vtkInteractorStyleImage(publicAPI, model) {
     }
   };
 
-  //--------------------------------------------------------------------------
-  publicAPI.handleStartMouseWheel = () => {
-    publicAPI.startSlice();
-  };
-
-  //--------------------------------------------------------------------------
-  publicAPI.handleEndMouseWheel = () => {
-    publicAPI.endSlice();
-  };
-
   //--------------------------------------------------------------------------
   publicAPI.handleMouseWheel = (callData) => {
     const camera = model.getRenderer(callData).getActiveCamera();

Sources/Interaction/Style/InteractorStyleImage/test/testMouseWheel.js

@@ -0,0 +1,47 @@
+import { it, expect } from 'vitest';
+import vtkActor from 'vtk.js/Sources/Rendering/Core/Actor';
+import vtkConeSource from 'vtk.js/Sources/Filters/Sources/ConeSource';
+import vtkMapper from 'vtk.js/Sources/Rendering/Core/Mapper';
+import vtkFullScreenRenderWindow from 'vtk.js/Sources/Rendering/Misc/FullScreenRenderWindow';
+import vtkInteractorStyleImage from 'vtk.js/Sources/Interaction/Style/InteractorStyleImage';
+
+function setup() {
+  const fullScreenRenderer = vtkFullScreenRenderWindow.newInstance({
+    background: [0.2, 0.3, 0.4],
+  });
+  const renderWindow = fullScreenRenderer.getRenderWindow();
+  const renderer = fullScreenRenderer.getRenderer();
+  renderWindow.addRenderer(renderer);
+  const interactor = fullScreenRenderer.getInteractor();
+  const interactorStyle = vtkInteractorStyleImage.newInstance();
+  interactor.setInteractorStyle(interactorStyle);
+  const coneSource = vtkConeSource.newInstance({ height: 1.0 });
+  const mapper = vtkMapper.newInstance();
+  mapper.setInputConnection(coneSource.getOutputPort());
+  const actor = vtkActor.newInstance();
+  actor.setMapper(mapper);
+  renderer.addActor(actor);
+  renderer.resetCamera();
+  renderWindow.render();
+  return { renderer, interactorStyle };
+}
+
+it('Test vtkInteractorStyleImage mouse move during mouse wheel does not slice', () => {
+  const { renderer, interactorStyle } = setup();
+  const camera = renderer.getActiveCamera();
+
+  const distance = camera.getDistance();
+  const focalPoint = [...camera.getFocalPoint()];
+  interactorStyle.handleStartMouseWheel();
+  interactorStyle.handleMouseMove({
+    position: { x: 10, y: 50 },
+    pokedRenderer: renderer,
+  });
+  interactorStyle.handleEndMouseWheel();
+
+  expect(
+    camera.getDistance(),
+    'Make sure moving the mouse while the mouse wheel is handled leaves the camera unchanged.'
+  ).toEqual(distance);
+  expect(camera.getFocalPoint()).toEqual(focalPoint);
+});