Merge pull request Kitware#779 from sankhesh/remove_downsampling

fix(rendering): Removes downsampling of the volume

Author: PaulHax

src/components/vtk/VtkBaseVolumeRepresentation.vue

@@ -167,12 +167,6 @@ watchEffect(() => {
     mapper,
   });
 
-  if (isImageStreaming.value) {
-    // reduce the quality of the volume until the entire volume is loaded
-    const sampleDistance = mapper.getSampleDistance();
-    mapper.setSampleDistance(sampleDistance * 15);
-  }
-
   view.requestRender();
 });
 

src/utils/volumeProperties.ts

@@ -12,28 +12,6 @@ import vtkVolumeProperty from '@kitware/vtk.js/Rendering/Core/VolumeProperty';
 import { Vector3 } from '@kitware/vtk.js/types';
 import { vec3 } from 'gl-matrix';
 
-/**
- * Sets the volume sampling distance.
- * @param mapper
- * @param distance A value betweeen 0 and 1.
- * @param imageData
- */
-export function setSamplingDistance(
-  mapper: vtkVolumeMapper,
-  distance: number,
-  imageData: vtkImageData
-) {
-  const sampleDistance =
-    0.7 *
-    Math.sqrt(
-      imageData
-        .getSpacing()
-        .map((v) => v * v)
-        .reduce((a, b) => a + b, 0)
-    );
-  mapper.setSampleDistance(sampleDistance * 2 ** (distance * 3.0 - 1.5));
-}
-
 /**
  * Sets the edge gradient.
  * @param property