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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 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 | 1x 9x 9x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 16x 16x 16x 4x 16x 16x 16x 560x 560x 16x 16x 16x 16x 16x 16x 16x 16x 16x 16x 528x 4752x 528x 528x 528x 16x 4x 6x 6x 6x 6x 1x 9x 9x 9x 9x 9x 9x 1x | import macro from 'vtk.js/Sources/macros';
import vtkPolygon from 'vtk.js/Sources/Common/DataModel/Polygon';
import vtkPolyData from 'vtk.js/Sources/Common/DataModel/PolyData';
const { vtkWarningMacro } = macro;
// ----------------------------------------------------------------------------
// vtkTriangleFilter methods
// ----------------------------------------------------------------------------
function vtkTriangleFilter(publicAPI, model) {
// Set our classname
model.classHierarchy.push('vtkTriangleFilter');
// requestData only supports polys for now.
publicAPI.requestData = (inData, outData) => {
const input = inData[0];
const points = input.getPoints().getData();
const polys = input.getPolys().getData();
const cellsDataType = input.getPolys().getDataType();
const pointsDataType = input.getPoints().getDataType();
// Todo: instantiate TypedArray of the final size
const newCells = [];
const newPoints = [];
model.errorCount = 0;
if (polys) {
let npts = 0;
let isLastPointDuplicated = false;
for (let c = 0; c < polys.length; c += npts + 1) {
npts = polys[c];
// If the first point is duplicated at the end of the cell, ignore it
isLastPointDuplicated = polys[c + 1] === polys[c + npts];
if (isLastPointDuplicated) {
--npts;
}
// We can't use cell.map here, it doesn't seems to work properly with Uint32Arrays ...
const cellPoints = [];
cellPoints.length = npts;
for (let i = 0; i < npts; i++) {
const pointId = polys[c + i + 1];
cellPoints[i] = [
points[3 * pointId],
points[3 * pointId + 1],
points[3 * pointId + 2],
];
}
Iif (npts === 3) {
const newIdStart = newPoints.length / 3;
newCells.push(3, newIdStart, newIdStart + 1, newIdStart + 2);
newPoints.push(...cellPoints[0], ...cellPoints[1], ...cellPoints[2]);
} else if (npts > 3) {
const polygon = vtkPolygon.newInstance();
polygon.setPoints(cellPoints);
Iif (!polygon.triangulate()) {
vtkWarningMacro(`Triangulation failed at cellOffset ${c}`);
++model.errorCount;
}
const newCellPoints = polygon.getPointArray();
const numSimplices = Math.floor(newCellPoints.length / 9);
const triPts = [];
triPts.length = 9;
for (let i = 0; i < numSimplices; i++) {
for (let j = 0; j < 9; j++) {
triPts[j] = newCellPoints[9 * i + j];
}
const newIdStart = newPoints.length / 3;
newCells.push(3, newIdStart, newIdStart + 1, newIdStart + 2);
newPoints.push(...triPts);
}
}
if (isLastPointDuplicated) {
++npts;
}
}
}
const dataset = vtkPolyData.newInstance();
dataset
.getPoints()
.setData(macro.newTypedArrayFrom(pointsDataType, newPoints));
dataset
.getPolys()
.setData(macro.newTypedArrayFrom(cellsDataType, newCells));
outData[0] = dataset;
};
}
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
errorCount: 0,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Build VTK API
macro.setGet(publicAPI, model, []);
macro.get(publicAPI, model, ['errorCount']);
// Make this a VTK object
macro.obj(publicAPI, model);
// Also make it an algorithm with one input and one output
macro.algo(publicAPI, model, 1, 1);
// Object specific methods
vtkTriangleFilter(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkTriangleFilter');
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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