paraview-glance/src/config/proxyFilter.js

Web application for Visualizing Scientific and Medical datasets

import vtkProxySource from 'vtk.js/Sources/Proxy/Core/SourceProxy';
import vtkImageMarchingCubes from 'vtk.js/Sources/Filters/General/ImageMarchingCubes';

const Contour = {
  class: vtkProxySource,
  options: {
    autoUpdate: false, // For now...
    algoFactory: vtkImageMarchingCubes,
    proxyPropertyMapping: {
      contourValue: { modelKey: 'algo', property: 'contourValue' },
      computeNormals: { modelKey: 'algo', property: 'computeNormals' },
      mergePoints: { modelKey: 'algo', property: 'mergePoints' },
    },
    updateDomain(self, dataset) {
      const arrayToProcess =
        dataset.getPointData().getScalars() ||
        dataset.getPointData().getArrayByIndex(0);
      if (!arrayToProcess) {
        return;
      }
      const [min, max] = arrayToProcess.getRange();
      const step = Math.min(1, (max - min) / 500);
      self.updateProxyProperty('contourValue', {
        domain: { min, max, step },
      });
    },
    ui: [
      {
        label: 'Contour Value',
        name: 'contourValue',
        widget: 'slider',
        propType: 'slider',
        type: 'double',
        size: 1,
        domain: { min: 0, max: 1000, step: 1 },
        doc: 'Adjust contour value',
      },
      {
        label: 'Compute Normals',
        name: 'computeNormals',
        widget: 'checkbox',
        type: 'boolean',
        advanced: 0,
        size: 1,
        doc: 'Compute normal to enable smooth surface',
      },
      {
        label: 'Merge points',
        name: 'mergePoints',
        widget: 'checkbox',
        type: 'boolean',
        advanced: 0,
        size: 1,
        doc: 'Prevent point duplication by merging them',
      },
      {
        label: 'Update',
        name: 'update',
        propType: 'ExecuteProperty',
        size: 1,
      },
    ],
  },
};

export default {
  Contour,
};