Press n or j to go to the next uncovered block, b, p or k for the previous block.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 | 20x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 2334x 2334x 2334x 2334x 2334x 1556x 1556x 17x 778x 778x 778x 778x 778x 778x 17x 17x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 778x 2334x 2334x 2334x 2334x 2334x 1556x 1556x 17x 17x 778x 17x 17x 778x 17x 51x 17x 17x 17x 17x 17x 17x 20x 1x 20x 20x 20x 20x 20x 20x 1x | import macro from 'vtk.js/Sources/macros'; import vtkDataArray from 'vtk.js/Sources/Common/Core/DataArray'; import vtkPolyData from 'vtk.js/Sources/Common/DataModel/PolyData'; import vtkMatrixBuilder from 'vtk.js/Sources/Common/Core/MatrixBuilder'; // ---------------------------------------------------------------------------- // vtkCylinderSource methods // ---------------------------------------------------------------------------- function vtkCylinderSource(publicAPI, model) { // Set our classname model.classHierarchy.push('vtkCylinderSource'); function requestData(inData, outData) { Iif (model.deleted) { return; } let dataset = outData[0]; const angle = (2.0 * Math.PI) / model.resolution; let numberOfPoints = 2 * model.resolution; let numberOfPolys = 5 * model.resolution; if (model.capping) { numberOfPoints = 4 * model.resolution; numberOfPolys = 7 * model.resolution + 2; } // Points const points = macro.newTypedArray(model.pointType, numberOfPoints * 3); // Cells let cellLocation = 0; const polys = new Uint32Array(numberOfPolys); // Normals const normalsData = new Float32Array(numberOfPoints * 3); const normals = vtkDataArray.newInstance({ numberOfComponents: 3, values: normalsData, name: 'Normals', }); // Texture coords const tcData = new Float32Array(numberOfPoints * 2); const tcoords = vtkDataArray.newInstance({ numberOfComponents: 2, values: tcData, name: 'TCoords', }); // Generate points for all sides const nbot = [0.0, 0.0, 0.0]; const ntop = [0.0, 0.0, 0.0]; const xbot = [0.0, 0.0, 0.0]; const xtop = [0.0, 0.0, 0.0]; const tcbot = [0.0, 0.0]; const tctop = [0.0, 0.0]; const otherRadius = model.otherRadius == null ? model.radius : model.otherRadius; for (let i = 0; i < model.resolution; i++) { // x coordinate nbot[0] = Math.cos(i * angle + model.initAngle); ntop[0] = nbot[0]; xbot[0] = model.radius * nbot[0] + model.center[0]; xtop[0] = xbot[0]; tcbot[0] = Math.abs((2.0 * i) / model.resolution - 1.0); tctop[0] = tcbot[0]; // y coordinate xbot[1] = 0.5 * model.height + model.center[1]; xtop[1] = -0.5 * model.height + model.center[1]; tcbot[1] = 0.0; tctop[1] = 1.0; // z coordinate nbot[2] = -Math.sin(i * angle + model.initAngle); ntop[2] = nbot[2]; xbot[2] = otherRadius * nbot[2] + model.center[2]; xtop[2] = xbot[2]; const pointIdx = 2 * i; for (let j = 0; j < 3; j++) { normalsData[pointIdx * 3 + j] = nbot[j]; normalsData[(pointIdx + 1) * 3 + j] = ntop[j]; points[pointIdx * 3 + j] = xbot[j]; points[(pointIdx + 1) * 3 + j] = xtop[j]; if (j < 2) { tcData[pointIdx * 2 + j] = tcbot[j]; tcData[(pointIdx + 1) * 2 + j] = tctop[j]; } } } // Generate polygons for sides for (let i = 0; i < model.resolution; i++) { polys[cellLocation++] = 4; polys[cellLocation++] = 2 * i; polys[cellLocation++] = 2 * i + 1; const pt = (2 * i + 3) % (2 * model.resolution); polys[cellLocation++] = pt; polys[cellLocation++] = pt - 1; } if (model.capping) { // Generate points for top/bottom polygons for (let i = 0; i < model.resolution; i++) { // x coordinate xbot[0] = model.radius * Math.cos(i * angle + model.initAngle); xtop[0] = xbot[0]; tcbot[0] = xbot[0]; tctop[0] = xbot[0]; xbot[0] += model.center[0]; xtop[0] += model.center[0]; // y coordinate nbot[1] = 1.0; ntop[1] = -1.0; xbot[1] = 0.5 * model.height + model.center[1]; xtop[1] = -0.5 * model.height + model.center[1]; // z coordinate xbot[2] = -otherRadius * Math.sin(i * angle + model.initAngle); xtop[2] = xbot[2]; tcbot[1] = xbot[2]; tctop[1] = xbot[2]; xbot[2] += model.center[2]; xtop[2] += model.center[2]; const botIdx = 2 * model.resolution + i; const topIdx = 3 * model.resolution + model.resolution - i - 1; for (let j = 0; j < 3; j++) { normalsData[3 * botIdx + j] = nbot[j]; normalsData[3 * topIdx + j] = ntop[j]; points[3 * botIdx + j] = xbot[j]; points[3 * topIdx + j] = xtop[j]; if (j < 2) { tcData[2 * botIdx + j] = tcbot[j]; tcData[2 * topIdx + j] = tctop[j]; } } } // Generate polygons for top/bottom polys[cellLocation++] = model.resolution; for (let i = 0; i < model.resolution; i++) { polys[cellLocation++] = 2 * model.resolution + i; } polys[cellLocation++] = model.resolution; for (let i = 0; i < model.resolution; i++) { polys[cellLocation++] = 3 * model.resolution + i; } } // Apply transformation to the points coordinates vtkMatrixBuilder .buildFromRadian() .translate(...model.center) .rotateFromDirections([0, 1, 0], model.direction) .translate(...model.center.map((c) => c * -1)) .apply(points); dataset = vtkPolyData.newInstance(); dataset.getPoints().setData(points, 3); dataset.getPolys().setData(polys, 1); dataset.getPointData().setNormals(normals); dataset.getPointData().setTCoords(tcoords); // Update output outData[0] = dataset; } // Expose methods publicAPI.requestData = requestData; } // ---------------------------------------------------------------------------- // Object factory // ---------------------------------------------------------------------------- const DEFAULT_VALUES = { height: 1.0, initAngle: 0, radius: 1.0, resolution: 6, center: [0, 0, 0], direction: [0.0, 1.0, 0.0], capping: true, 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, [ 'height', 'initAngle', 'otherRadius', 'radius', 'resolution', 'capping', ]); macro.setGetArray(publicAPI, model, ['center', 'direction'], 3); macro.algo(publicAPI, model, 0, 1); vtkCylinderSource(publicAPI, model); } // ---------------------------------------------------------------------------- export const newInstance = macro.newInstance(extend, 'vtkCylinderSource'); // ---------------------------------------------------------------------------- export default { newInstance, extend }; |