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chore(VolumeMapperLightAndShadow): fix example #3590

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chore(VolumeMapperLightAndShadow): fix example #3590

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36 changes: 19 additions & 17 deletions Examples/Volume/VolumeMapperLightAndShadow/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -8,11 +8,11 @@
import vtkVolume from '@kitware/vtk.js/Rendering/Core/Volume';
import vtkVolumeMapper from '@kitware/vtk.js/Rendering/Core/VolumeMapper';
import vtkLight from '@kitware/vtk.js/Rendering/Core/Light';
import vtkXMLImageDataReader from '@kitware/vtk.js/IO/XML/XMLImageDataReader';
import HttpDataAccessHelper from '@kitware/vtk.js/IO/Core/DataAccessHelper/HttpDataAccessHelper';

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eslint(no-unused-vars) 

Identifier 'HttpDataAccessHelper' is imported but never used.

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eslint(no-unused-vars) 

Identifier 'HttpDataAccessHelper' is imported but never used.

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eslint(no-unused-vars) 

Identifier 'HttpDataAccessHelper' is imported but never used.
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 vtkHttpDataSetReader from '@kitware/vtk.js/IO/Core/HttpDataSetReader';

import vtkActor from '@kitware/vtk.js/Rendering/Core/Actor';
import vtkSphereSource from '@kitware/vtk.js/Filters/Sources/SphereSource';
Expand All @@ -33,7 +33,7 @@
// ----------------------------------------------------------------------------
// Main function to set up and render volume
// ----------------------------------------------------------------------------
function createVolumeShadowViewer(rootContainer, fileContents) {
function createVolumeShadowViewer(rootContainer, reader, imageData) {
// Container content and style
const background = [0, 0, 0];
const containerStyle = { height: '100%', width: '100%' };
Expand Down Expand Up @@ -76,9 +76,7 @@
fpsMonitor.setRenderWindow(renderWindow);

// Actor and mapper pipeline
const vtiReader = vtkXMLImageDataReader.newInstance();
vtiReader.parseAsArrayBuffer(fileContents);
const source = vtiReader.getOutputData(0);
const source = imageData;

const actor = vtkVolume.newInstance();
const actorProperty = actor.getProperty(0);
Expand Down Expand Up @@ -112,7 +110,7 @@
.reduce((a, b) => a + b, 0)
);
mapper.setSampleDistance(sampleDistance / 2.5);
mapper.setVolumeShadowSamplingDistFactor(5.0);
mapper.setVolumeShadowSamplingDistFactor(3.0);

// Add transfer function
const lookupTable = vtkColorTransferFunction.newInstance();
Expand All @@ -122,8 +120,9 @@

// Set actor properties
actorProperty.setComputeNormalFromOpacity(false);
actorProperty.setGlobalIlluminationReach(0.0);
actorProperty.setVolumetricScatteringBlending(0.0);
actorProperty.setGlobalIlluminationReach(0.5);
actorProperty.setVolumetricScatteringBlending(0.7);
actorProperty.setAnisotropy(0.4);
actorProperty.setInterpolationTypeToLinear();
actorProperty.setScalarOpacityUnitDistance(
0,
Expand Down Expand Up @@ -204,10 +203,10 @@
}
const params = {
DensityNormal: isDensity,
VolumeBlending: 0.0,
GlobalReach: 0.0,
SampleDist: 5.0,
Anisotropy: 0.0,
VolumeBlending: actorProperty.getVolumetricScatteringBlending(),
GlobalReach: actorProperty.getGlobalIlluminationReach(),
SampleDist: mapper.getVolumeShadowSamplingDistFactor(),
Anisotropy: actorProperty.getAnisotropy(),
};
gui
.add(params, 'DensityNormal')
Expand Down Expand Up @@ -256,7 +255,7 @@

// Make some variables global so that you can inspect and
// modify objects in your browser's developer console:
global.source = vtiReader;
global.source = reader;
global.mapper = mapper;
global.actor = actor;
global.renderer = renderer;
Expand All @@ -271,8 +270,11 @@
// ----------------------------------------------------------------------------
// Read volume and render
// ----------------------------------------------------------------------------
HttpDataAccessHelper.fetchBinary(
`${__BASE_PATH__}/data/volume/head-binary.vti`
).then((binary) => {
createVolumeShadowViewer(myContainer, binary);

const reader = vtkHttpDataSetReader.newInstance({ fetchGzip: true });
reader.setUrl(`${__BASE_PATH__}/data/volume/LIDC2.vti`).then(() => {
reader.loadData().then(() => {
const imageData = reader.getOutputData();
createVolumeShadowViewer(myContainer, reader, imageData);
});
});
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