Merge pull request #430 from Kitware/add_glyph_test

test(Rendering): added a glyph mapper test

Author: martinken

Sources/Rendering/Core/Glyph3DMapper/test/testGlyph3DMapper.js

@@ -0,0 +1,102 @@
+import test      from 'tape-catch';
+import testUtils from 'vtk.js/Sources/Testing/testUtils';
+
+import vtkCalculator          from 'vtk.js/Sources/Filters/General/Calculator';
+import vtkOpenGLRenderWindow  from 'vtk.js/Sources/Rendering/OpenGL/RenderWindow';
+import vtkRenderWindow        from 'vtk.js/Sources/Rendering/Core/RenderWindow';
+import vtkRenderer            from 'vtk.js/Sources/Rendering/Core/Renderer';
+import vtkPlaneSource         from 'vtk.js/Sources/Filters/Sources/PlaneSource';
+import vtkConeSource          from 'vtk.js/Sources/Filters/Sources/ConeSource';
+import vtkGlyph3DMapper       from 'vtk.js/Sources/Rendering/Core/Glyph3DMapper';
+import vtkActor               from 'vtk.js/Sources/Rendering/Core/Actor';
+
+import { AttributeTypes }     from 'vtk.js/Sources/Common/DataModel/DataSetAttributes/Constants';
+import { FieldDataTypes }     from 'vtk.js/Sources/Common/DataModel/DataSet/Constants';
+
+import baseline from './testGlyph3DMapper.png';
+
+test.onlyIfWebGL('Test vtkGlyph3DMapper Rendering', (t) => {
+  const gc = testUtils.createGarbageCollector(t);
+  t.ok('rendering', 'vtkGlyph3DMapper Rendering');
+
+  // Create some control UI
+  const container = document.querySelector('body');
+  const renderWindowContainer = gc.registerDOMElement(document.createElement('div'));
+  container.appendChild(renderWindowContainer);
+
+  // create what we will view
+  const renderWindow = gc.registerResource(vtkRenderWindow.newInstance());
+  const renderer = gc.registerResource(vtkRenderer.newInstance());
+  renderWindow.addRenderer(renderer);
+  renderer.setBackground(0.32, 0.34, 0.43);
+
+  const planeSource = vtkPlaneSource.newInstance();
+  const simpleFilter = vtkCalculator.newInstance();
+  const mapper = vtkGlyph3DMapper.newInstance();
+  const actor = vtkActor.newInstance();
+
+  simpleFilter.setFormula({
+    getArrays: inputDataSets => ({
+      input: [
+        { location: FieldDataTypes.COORDINATE }], // Require point coordinates as input
+      output: [ // Generate two output arrays:
+        {
+          location: FieldDataTypes.POINT,   // This array will be point-data ...
+          name: 'pressure',                // ... with the given name ...
+          dataType: 'Float32Array',         // ... of this type ...
+          numberOfComponents: 3,            // ... with this many components ...
+        },
+        {
+          location: FieldDataTypes.POINT, // This array will be field data ...
+          name: 'temperature',                   // ... with the given name ...
+          dataType: 'Float32Array',         // ... of this type ...
+          attribute: AttributeTypes.SCALARS, // ... and will be marked as the default scalars.
+          numberOfComponents: 1,            // ... with this many components ...
+        },
+      ] }),
+    evaluate: (arraysIn, arraysOut) => {
+      // Convert in the input arrays of vtkDataArrays into variables
+      // referencing the underlying JavaScript typed-data arrays:
+      const [coords] = arraysIn.map(d => d.getData());
+      const [press, temp] = arraysOut.map(d => d.getData());
+
+      // Since we are passed coords as a 3-component array,
+      // loop over all the points and compute the point-data output:
+      for (let i = 0, sz = coords.length / 3; i < sz; ++i) {
+        press[i * 3] = ((coords[3 * i] - 0.5) * (coords[3 * i] - 0.5));
+        press[(i * 3) + 1] = (((coords[(3 * i) + 1] - 0.5) * (coords[(3 * i) + 1] - 0.5)) + 0.125) * 0.1;
+        press[(i * 3) + 2] = (((coords[3 * i] - 0.5) * (coords[3 * i] - 0.5)) + ((coords[(3 * i) + 1] - 0.5) * (coords[(3 * i) + 1] - 0.5)) + 0.125) * 0.1;
+        temp[i] = coords[(3 * i) + 1] * 0.1;
+      }
+      // Mark the output vtkDataArray as modified
+      arraysOut.forEach(x => x.modified());
+    },
+  });
+
+  // The generated 'temperature' array will become the default scalars, so the plane mapper will color by 'temperature':
+  simpleFilter.setInputConnection(planeSource.getOutputPort());
+
+  mapper.setInputConnection(simpleFilter.getOutputPort(), 0);
+
+  const coneSource = vtkConeSource.newInstance();
+  coneSource.setResolution(12);
+  mapper.setInputConnection(coneSource.getOutputPort(), 1);
+  mapper.setOrientationArray('pressure');
+  mapper.setScalarRange(0.0, 0.1);
+
+  actor.setMapper(mapper);
+  renderer.addActor(actor);
+  renderer.resetCamera();
+  renderer.getActiveCamera().zoom(1.3);
+
+  // now create something to view it, in this case webgl
+  const glwindow = gc.registerResource(vtkOpenGLRenderWindow.newInstance());
+  glwindow.setContainer(renderWindowContainer);
+  renderWindow.addView(glwindow);
+  glwindow.setSize(400, 400);
+
+  renderWindow.render();
+
+  const image = glwindow.captureImage();
+  testUtils.compareImages(image, [baseline], 'Rendering/Core/Glyph3DMapper/testGlyph3DMapper', t, 1.0, gc.releaseResources);
+});

Sources/Rendering/Core/Glyph3DMapper/test/testGlyph3DMapper.png

@@ -20,6 +20,7 @@ import './Rendering/Core/ColorTransferFunction/test/testColorTransferFunction';
 import './Rendering/Core/ColorTransferFunction/test/testColorTransferFunctionPresets';
 import './Rendering/Core/ColorTransferFunction/test/testColorTransferFunctionInterpolation';
 import './Rendering/Core/Coordinate/test/testCoordinate';
+import './Rendering/Core/Glyph3DMapper/test/testGlyph3DMapper';
 import './Rendering/Core/Prop3D/test/testUserMatrix';
 import './Rendering/Core/RenderWindow/test/testMultipleRenderers';
 import './Rendering/Core/SphereMapper/test/testDisableScalarColoring';