refactor: Fix resource caching and signature of getProperty()

Author: bruyeret

Examples/Volume/VolumeMapperLightAndShadow/index.js

@@ -13,7 +13,6 @@ import HttpDataAccessHelper from '@kitware/vtk.js/IO/Core/DataAccessHelper/HttpD
 import vtkVolumeController from '@kitware/vtk.js/Interaction/UI/VolumeController';
 import vtkBoundingBox from '@kitware/vtk.js/Common/DataModel/BoundingBox';
 import vtkFPSMonitor from '@kitware/vtk.js/Interaction/UI/FPSMonitor';
-import vtkImageData from '@kitware/vtk.js/Common/DataModel/ImageData';
 
 import vtkActor from '@kitware/vtk.js/Rendering/Core/Actor';
 import vtkSphereSource from '@kitware/vtk.js/Filters/Sources/SphereSource';
@@ -87,18 +86,6 @@ function createVolumeShadowViewer(rootContainer, fileContents) {
   actor.setMapper(mapper);
   mapper.addInputData(source);
 
-  for (let i = 0; i < 0; ++i) {
-    const otherImageData = vtkImageData.newInstance();
-    otherImageData.setPointData(source.getPointData());
-    otherImageData.setDimensions(...source.getDimensions());
-    otherImageData.setSpacing(...source.getSpacing());
-    otherImageData.setOrigin(...source.getOrigin());
-    otherImageData.setDirection(...source.getDirection());
-    otherImageData.setOrigin(...[120 * (i + 1), 0, 0]);
-    mapper.addInputData(otherImageData);
-    actor.setProperty(actorProperty, 1 + i);
-  }
-
   // Add one positional light
   const bounds = actor.getBounds();
   const center = vtkBoundingBox.getCenter(bounds);

Sources/Rendering/Core/ImageSlice/index.d.ts

@@ -126,7 +126,9 @@ export interface vtkImageSlice extends vtkProp3D {
   /**
    *
    * @param {vtkImageProperty} property The vtkImageProperty instance.
+   * @param {number} mapperInputPort Is 0 when not given
    */
+  setProperty(mapperInputPort: number, property: vtkImageProperty): boolean;
   setProperty(property: vtkImageProperty): boolean;
 
   /**

Sources/Rendering/Core/Prop3D/index.js

@@ -238,7 +238,15 @@ function vtkProp3D(publicAPI, model) {
     return model.properties[mapperInputPort];
   };
 
-  publicAPI.setProperty = (property, mapperInputPort = 0) => {
+  publicAPI.setProperty = (firstArg, secondArg) => {
+    // Two options for argument layout:
+    // - (mapperInputPort, property)
+    // - (property)
+    const useInputPortArgument = Number.isInteger(firstArg);
+    const [mapperInputPort, property] = useInputPortArgument
+      ? [firstArg, secondArg]
+      : [0, firstArg];
+
     if (model.properties[mapperInputPort] === property) {
       return false;
     }

Sources/Rendering/Core/Volume/index.d.ts

@@ -74,9 +74,10 @@ export interface vtkVolume extends vtkProp3D {
   /**
    * Set the volume property for the specified mapper input port, which defaults to 0
    * @param {vtkVolumeProperty} property
-   * @param {number} mapperInputPort Defaults to 0
+   * @param {number} mapperInputPort Is 0 when not given
    */
-  setProperty(property: vtkVolumeProperty, mapperInputPort?: number): boolean;
+  setProperty(mapperInputPort: number, property: vtkVolumeProperty): boolean;
+  setProperty(property: vtkVolumeProperty): boolean;
 
   /**
    * Set the volume properties array

Sources/Rendering/OpenGL/RenderWindow/resourceSharingHelper.js

@@ -11,7 +11,10 @@ export function getTransferFunctionHash(
 }
 
 export function getImageDataHash(image, scalars) {
-  return `${image.getMTime()}A${scalars.getMTime()}`;
+  // Don't use the image data, as the scalars will define the texture
+  // If using the image data in the hash, it will cause issues when two image data
+  // using the same scalars are in the same mapper (for example the VolumeMapper)
+  return `${scalars.getMTime()}`;
 }
 
 export default { getTransferFunctionHash, getImageDataHash };