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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | 2x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 125x 125x 125x 125x 125x 125x 125x 125x 1x 1x 125x 1x 1x 2x 2x 2x 2x 2x 2x 1x | import macro from 'vtk.js/Sources/macros';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
import vtkPolyData from 'vtk.js/Sources/Common/DataModel/PolyData';
// ----------------------------------------------------------------------------
// vtkPointSource methods
// ----------------------------------------------------------------------------
function vtkPointSource(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkPointSource');
publicAPI.requestData = (inData, outData) => {
Iif (model.deleted) {
return;
}
const dataset = outData[0];
// Check input
const pointDataType = dataset
? dataset.getPoints().getDataType()
: model.pointType;
const pd = vtkPolyData.newInstance();
// hand create a point cloud
const numPts = model.numberOfPoints;
// Points
const points = macro.newTypedArray(pointDataType, numPts * 3);
pd.getPoints().setData(points, 3);
// Cells
const verts = new Uint32Array(numPts + 1);
pd.getVerts().setData(verts, 1);
let cosphi;
let sinphi;
let rho;
let radius;
let theta;
for (let i = 0; i < numPts; i++) {
cosphi = 1 - 2.0 * vtkMath.random();
sinphi = Math.sqrt(1 - cosphi * cosphi);
rho = model.radius * vtkMath.random() ** 0.33333333;
radius = rho * sinphi;
theta = 2.0 * Math.PI * vtkMath.random();
points[i * 3] = model.center[0] + radius * Math.cos(theta);
points[i * 3 + 1] = model.center[1] + radius * Math.sin(theta);
points[i * 3 + 2] = model.center[2] + rho * cosphi;
}
// Generate point connectivity
//
verts[0] = numPts;
for (let i = 0; i < numPts; i++) {
verts[i + 1] = i;
}
// Update output
outData[0] = pd;
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
numberOfPoints: 10,
center: [0, 0, 0],
radius: 0.5,
pointType: 'Float64Array',
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Build VTK API
macro.obj(publicAPI, model);
macro.setGet(publicAPI, model, ['numberOfPoints', 'radius']);
macro.setGetArray(publicAPI, model, ['center'], 3);
macro.algo(publicAPI, model, 0, 1);
vtkPointSource(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkPointSource');
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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