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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 | 13x 13x 13x 13x 4x 4x 4x 4x 4x 4x 4x 4x 13x 11x 11x 13x 13x 1x 1x 13x 13x 13x 13x 13x 13x 1x 1x | import macro from 'vtk.js/Sources/macros';
// ----------------------------------------------------------------------------
// vtkTexture methods
// ----------------------------------------------------------------------------
function vtkTexture(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkTexture');
publicAPI.imageLoaded = () => {
model.image.removeEventListener('load', publicAPI.imageLoaded);
model.imageLoaded = true;
publicAPI.modified();
};
publicAPI.setJsImageData = (imageData) => {
if (model.jsImageData === imageData) {
return;
}
// clear other entries
if (imageData !== null) {
publicAPI.setInputData(null);
publicAPI.setInputConnection(null);
model.image = null;
model.canvas = null;
}
model.jsImageData = imageData;
model.imageLoaded = true;
publicAPI.modified();
};
publicAPI.setCanvas = (canvas) => {
Iif (model.canvas === canvas) {
return;
}
// clear other entries
if (canvas !== null) {
publicAPI.setInputData(null);
publicAPI.setInputConnection(null);
model.image = null;
model.jsImageData = null;
}
model.canvas = canvas;
publicAPI.modified();
};
publicAPI.setImage = (image) => {
if (model.image === image) {
return;
}
// clear other entries
if (image !== null) {
publicAPI.setInputData(null);
publicAPI.setInputConnection(null);
model.canvas = null;
model.jsImageData = null;
}
model.image = image;
model.imageLoaded = false;
if (image.complete) {
publicAPI.imageLoaded();
} else {
image.addEventListener('load', publicAPI.imageLoaded);
}
publicAPI.modified();
};
publicAPI.getDimensionality = () => {
let width = 0;
let height = 0;
let depth = 1;
if (publicAPI.getInputData()) {
const data = publicAPI.getInputData();
width = data.getDimensions()[0];
height = data.getDimensions()[1];
depth = data.getDimensions()[2];
}
if (model.jsImageData) {
width = model.jsImageData.width;
height = model.jsImageData.height;
}
if (model.canvas) {
width = model.canvas.width;
height = model.canvas.height;
}
if (model.image) {
width = model.image.width;
height = model.image.height;
}
const dimensionality = (width > 1) + (height > 1) + (depth > 1);
return dimensionality;
};
publicAPI.getInputAsJsImageData = () => {
if (!model.imageLoaded || publicAPI.getInputData()) return null;
if (model.jsImageData) {
return model.jsImageData();
}
if (model.canvas) {
const context = model.canvas.getContext('2d');
const imageData = context.getImageData(
0,
0,
model.canvas.width,
model.canvas.height
);
return imageData;
}
if (model.image) {
const canvas = document.createElement('canvas');
canvas.width = model.image.width;
canvas.height = model.image.height;
const context = canvas.getContext('2d');
context.translate(0, canvas.height);
context.scale(1, -1);
context.drawImage(
model.image,
0,
0,
model.image.width,
model.image.height
);
const imageData = context.getImageData(0, 0, canvas.width, canvas.height);
return imageData;
}
return null;
};
}
// Use nativeArray instead of self
const generateMipmaps = (nativeArray, width, height, level) => {
// TODO: FIX UNEVEN TEXTURE MIP GENERATION:
// When textures don't have standard ratios, higher mip levels
// result in their color chanels getting messed up and shifting
// 3x3 gaussian kernel
const g3m = [1, 2, 1]; // eslint-disable-line
const g3w = 4; // eslint-disable-line
// 5x5 gaussian kernel
const g5m = [1, 2, 4, 2, 1]; // eslint-disable-line
const g5w = 10; // eslint-disable-line
// 7x7 gaussian kernel
const g7m = [1, 2, 6, 8, 6, 2, 1]; // eslint-disable-line
const g7w = 26; // eslint-disable-line
const kernel = g3m;
const kernelWeight = g3w;
const hs = nativeArray.length / (width * height); // TODO: support for textures with depth more than 1
let currentWidth = width;
let currentHeight = height;
let imageData = nativeArray;
const maps = [imageData];
for (let i = 0; i < level; i++) {
const oldData = [...imageData];
currentWidth /= 2;
currentHeight /= 2;
imageData = new Uint8ClampedArray(currentWidth * currentHeight * hs);
const vs = hs * currentWidth;
// Scale down
let shift = 0;
for (let p = 0; p < imageData.length; p += hs) {
if (p % vs === 0) {
shift += 2 * hs * currentWidth;
}
for (let c = 0; c < hs; c++) {
let sample = oldData[shift + c];
sample += oldData[shift + hs + c];
sample += oldData[shift - 2 * vs + c];
sample += oldData[shift - 2 * vs + hs + c];
sample /= 4;
imageData[p + c] = sample;
}
shift += 2 * hs;
}
// Horizontal Pass
let dataCopy = [...imageData];
for (let p = 0; p < imageData.length; p += hs) {
for (let c = 0; c < hs; c++) {
let x = -(kernel.length - 1) / 2;
let kw = kernelWeight;
let value = 0.0;
for (let k = 0; k < kernel.length; k++) {
let index = p + c + x * hs;
const lineShift = (index % vs) - ((p + c) % vs);
if (lineShift > hs) index += vs;
if (lineShift < -hs) index -= vs;
if (dataCopy[index]) {
value += dataCopy[index] * kernel[k];
} else {
kw -= kernel[k];
}
x += 1;
}
imageData[p + c] = value / kw;
}
}
// Vertical Pass
dataCopy = [...imageData];
for (let p = 0; p < imageData.length; p += hs) {
for (let c = 0; c < hs; c++) {
let x = -(kernel.length - 1) / 2;
let kw = kernelWeight;
let value = 0.0;
for (let k = 0; k < kernel.length; k++) {
const index = p + c + x * vs;
if (dataCopy[index]) {
value += dataCopy[index] * kernel[k];
} else {
kw -= kernel[k];
}
x += 1;
}
imageData[p + c] = value / kw;
}
}
maps.push(imageData);
}
return maps;
};
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
image: null,
canvas: null,
jsImageData: null,
imageLoaded: false,
repeat: false,
interpolate: false,
edgeClamp: false,
mipLevel: 0,
resizable: false, // must be set at construction time if the texture can be resizable
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Build VTK API
macro.obj(publicAPI, model);
macro.algo(publicAPI, model, 6, 0);
macro.get(publicAPI, model, [
'canvas',
'image',
'jsImageData',
'imageLoaded',
'resizable',
]);
macro.setGet(publicAPI, model, [
'repeat',
'edgeClamp',
'interpolate',
'mipLevel',
]);
vtkTexture(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkTexture');
export const STATIC = { generateMipmaps };
// ----------------------------------------------------------------------------
export default { newInstance, extend, ...STATIC };
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