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How to use unmultiplyAlpha method in wpt

Best JavaScript code snippet using wpt

images.ts

Source:images.ts

1import sharp, { Sharp } from "sharp";2import { SWFFile } from "../../format/swf";3import { OutputContext } from "../../output/context";4import { DefineBitsTag } from "../../format/tags/define-bits";5import { DefineBitsJPEG2Tag } from "../../format/tags/define-bits-jpeg-2";6import { DefineBitsJPEG3Tag } from "../../format/tags/define-bits-jpeg-3";7import { DefineBitsLossless2Tag } from "../../format/tags/define-bits-loseless-2";8import { File } from "../../output";9export async function translateImages(ctx: OutputContext, swf: SWFFile) {10  for (const tag of swf.characters.values()) {11    let assetFile: File;12    if (tag instanceof DefineBitsTag) {13      assetFile = await translateBits(ctx, tag);14    } else if (tag instanceof DefineBitsJPEG2Tag) {15      assetFile = await translateBitsJPEG2(ctx, tag);16    } else if (tag instanceof DefineBitsJPEG3Tag) {17      assetFile = await translateBitsJPEG3(ctx, tag);18    } else if (tag instanceof DefineBitsLossless2Tag) {19      assetFile = await translateBitsLossless2(ctx, tag);20    } else {21      continue;22    }23    const charIndex = ctx.file("characters", "index.js");24    charIndex.content.push(`25      bundle.images[${tag.characterId}] = { id: "character${tag.characterId}" };26    `);27    const assetIndex = ctx.file("assets", "index.js");28    assetIndex.content.push(`29      assets["character${tag.characterId}"] = {30        url: new URL("${assetIndex.relPathTo(assetFile)}", import.meta.url),31        size: ${assetFile.content[0].length},32      };33    `);34  }35}36async function translateBits(ctx: OutputContext, tag: DefineBitsTag) {37  const image = sharp(tag.jpegData);38  const { format } = await image.metadata();39  const data = await image.toBuffer();40  const file = ctx.file("assets", `${tag.characterId}.${format}`);41  file.content.push(data);42  return file;43}44async function translateBitsJPEG2(ctx: OutputContext, tag: DefineBitsJPEG2Tag) {45  const image = sharp(tag.imageData);46  const { format } = await image.metadata();47  const data = await image.toBuffer();48  const file = ctx.file("assets", `${tag.characterId}.${format}`);49  file.content.push(data);50  return file;51}52async function translateBitsJPEG3(ctx: OutputContext, tag: DefineBitsJPEG3Tag) {53  let image = sharp(tag.imageData);54  const { width, height } = await image.metadata();55  image.joinChannel(tag.alphaBitmapData, {56    raw: {57      width: width || 0,58      height: height || 0,59      channels: 1,60    },61  });62  image = await unMultiplyAlpha(image);63  const data = await image.png().toBuffer();64  const file = ctx.file("assets", `${tag.characterId}.png`);65  file.content.push(data);66  return file;67}68async function translateBitsLossless2(69  ctx: OutputContext,70  tag: DefineBitsLossless2Tag71) {72  const buf = Buffer.alloc(tag.bitmapWidth * tag.bitmapHeight * 4);73  let i = 0;74  for (let y = 0; y < tag.bitmapHeight; y++) {75    for (let x = 0; x < tag.bitmapWidth; x++) {76      buf[i * 4 + 0] = tag.bitmapData[i].red;77      buf[i * 4 + 1] = tag.bitmapData[i].green;78      buf[i * 4 + 2] = tag.bitmapData[i].blue;79      buf[i * 4 + 3] = tag.bitmapData[i].alpha;80      i++;81    }82  }83  let image = sharp(buf, {84    raw: {85      width: tag.bitmapWidth,86      height: tag.bitmapHeight,87      channels: 4,88    },89  });90  image = await unMultiplyAlpha(image);91  const data = await image.png().toBuffer();92  const file = ctx.file("assets", `${tag.characterId}.png`);93  file.content.push(data);94  return file;95}96async function unMultiplyAlpha(img: Sharp): Promise<Sharp> {97  const { width = 0, height = 0 } = await img.metadata();98  const data = await img.raw().toBuffer();99  let i = 0;100  for (let y = 0; y < height; y++) {101    for (let x = 0; x < width; x++) {102      const a = data[i * 4 + 3] / 255;103      if (a) {104        data[i * 4 + 0] = Math.min(255, Math.max(0, data[i * 4 + 0] / a));105        data[i * 4 + 1] = Math.min(255, Math.max(0, data[i * 4 + 1] / a));106        data[i * 4 + 2] = Math.min(255, Math.max(0, data[i * 4 + 2] / a));107      }108      i++;109    }110  }111  return sharp(data, { raw: { width, height, channels: 4 } });...

plus-lighter.js

Source:plus-lighter.js

...6    const premultipliedDestination = multiplyAlpha(destination);7    const premultipliedResult = premultipliedDestination.map((channel, i) =>8      clamp01(channel + premultipliedSource[i])9    );10    return unmultiplyAlpha(premultipliedResult);11  });12}13export const tests = [14  // Each test is a list of colors to composite.15  // Each color is [r, g, b, a], unmultiplied, in the range 0-1.16  [17    [1, 0, 0, 0.5],18    [0, 0, 1, 0.5],19  ],20  [21    [1, 0, 0, 0.25],22    [0, 0, 1, 0.25],23  ],24  [...

Using AI Code Generation

1var wptools = require('wp-tools');2var fs = require('fs');3var img = fs.readFileSync('test.png');4var result = wptools.unmultiplyAlpha(img);5fs.writeFileSync('test2.png', result);6var wptools = require('wp-tools');7var fs = require('fs');8var img = fs.readFileSync('test.png');9var result = wptools.multiplyAlpha(img);10fs.writeFileSync('test2.png', result);11var wptools = require('wp-tools');12var fs = require('fs');13var img = fs.readFileSync('test.png');14var result = wptools.premultiplyAlpha(img);15fs.writeFileSync('test2.png', result);16var wptools = require('wp-tools');17var fs = require('fs');18var img = fs.readFileSync('test.png');19var result = wptools.unpremultiplyAlpha(img);20fs.writeFileSync('test2.png', result);21var wptools = require('wp-tools');22var fs = require('fs');23var img = fs.readFileSync('test.png');24var result = wptools.unpremultiplyAlpha(img);25fs.writeFileSync('test2.png', result);26var wptools = require('wp-tools');27var fs = require('fs');28var img = fs.readFileSync('test.png');29var result = wptools.unpremultiplyAlpha(img);30fs.writeFileSync('test2.png', result);31var wptools = require('wp-tools');32var fs = require('fs');33var img = fs.readFileSync('test.png');34var result = wptools.unpremultiplyAlpha(img);35fs.writeFileSync('test2.png', result);36var wptools = require('wp-tools');37var fs = require('fs');38var img = fs.readFileSync('test.png');

Using AI Code Generation

1var wptools = require('wptools');2var image = wptools.unmultiplyAlpha('input.png', 'output.png');3var image = wptools.unmultiplyAlpha('input.png');4var image = wptools.unmultiplyAlpha('input.png', function(err, data) {5    if (err) {6        console.log(err);7    } else {8        console.log(data);9    }10});11var wptools = require('wptools');12var image = wptools.getPixelColorAt('input.png', 0, 0);13var image = wptools.getPixelColorAt('input.png', 0, 0, function(err, data) {14    if (err) {15        console.log(err);16    } else {17        console.log(data);18    }19});20var wptools = require('wptools');21var image = wptools.setPixelColorAt('input.png', 0, 0, '#000000');22var image = wptools.setPixelColorAt('input.png', 0, 0, '#000000', function(err, data) {23    if (err) {24        console.log(err);25    } else {26        console.log(data);27    }28});29var wptools = require('wptools');30var image = wptools.getPixelColor('input.png', 0, 0);31var image = wptools.getPixelColor('input.png', 0, 0, function(err, data) {32    if (err) {33        console.log(err);34    } else {35        console.log(data);36    }37});

Using AI Code Generation

1const wptools = require('wptools');2wptools.unmultiplyAlpha('test.png', 'test_unmultiplied.png', function(err, stdout, stderr) {3    if (err) {4        console.log(err);5    }6    console.log(stdout);7    console.log(stderr);8});9const wptools = require('wptools');10wptools.multiplyAlpha('test_unmultiplied.png', 'test_multiplied.png', function(err, stdout, stderr) {11    if (err) {12        console.log(err);13    }14    console.log(stdout);15    console.log(stderr);16});17const wptools = require('wptools');18wptools.optimizePng('test.png', 'test_optimized.png', function(err, stdout, stderr) {19    if (err) {20        console.log(err);21    }22    console.log(stdout);23    console.log(stderr);24});25const wptools = require('wptools');26wptools.optimizeJpeg('test.jpg', 'test_optimized.jpg', function(err, stdout, stderr) {27    if (err) {28        console.log(err);29    }30    console.log(stdout);31    console.log(stderr);32});33const wptools = require('wptools');34wptools.optimizeGif('test.gif', 'test_optimized.gif', function(err, stdout, stderr) {35    if (err) {36        console.log(err);37    }38    console.log(stdout);39    console.log(stderr);40});41const wptools = require('wptools');42wptools.optimizeSvg('test.svg', 'test_optimized.svg', function(err, stdout, stderr) {43    if (err) {44        console.log(err);45    }46    console.log(stdout);47    console.log(stderr);48});49const wptools = require('wptools');50wptools.optimizeWebp('test.webp', 'test_optimized.webp',

Using AI Code Generation

1var wptools = require('wptools');2var image = wptools.image('test.png');3image.unmultiplyAlpha();4image.write('test_unmultiplied.png', function(err){5  if(err) throw err;6  console.log('done');7});

Using AI Code Generation

1var wptools = require("wptools");2var image = new wptools.Image("test.png");3image.unmultiplyAlpha(function(err, buffer){4    if(err) throw err;5    console.log("Unmultiply alpha done");6});7## Image#convertToRGBA([callback])8var wptools = require("wptools");9var image = new wptools.Image("test.png");10image.convertToRGBA(function(err, buffer){11    if(err) throw err;12    console.log("Convert to RGBA done");13});14## Image#convertToGrayscale([callback])15var wptools = require("wptools");16var image = new wptools.Image("test.png");17image.convertToGrayscale(function(err, buffer){18    if(err) throw err;19    console.log("Convert to grayscale done");20});21## Image#convertToIndexed([callback])22var wptools = require("wptools");23var image = new wptools.Image("test.png");24image.convertToIndexed(function(err, buffer){25    if(err) throw err;26    console.log("Convert to indexed done");27});28## Image#convertToIndexedWithTransparency([callback])29var wptools = require("wptools");30var image = new wptools.Image("test.png");

Using AI Code Generation

1var wptrunner = require('wptrunner');2wptrunner.unmultiplyAlpha("path/to/image.png");3var wptrunner = require('wptrunner');4var data = wptrunner.getUnmultipliedImageData("path/to/image.png");5var wptrunner = require('wptrunner');6var data = wptrunner.getUnmultipliedImageData("path/to/image.png");7var wptrunner = require('wptrunner');8var data = wptrunner.getUnmultipliedImageData("path/to/image.png");9var wptrunner = require('wptrunner');10var data = wptrunner.getUnmultipliedImageData("path/to/image.png");11var wptrunner = require('wptrunner');12var data = wptrunner.getUnmultipliedImageData("path/to/image.png");

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var img = fs.readFileSync('test.png');4var buf = new Buffer(img);5var unmul = wptools.unmultiplyAlpha(buf);6fs.writeFileSync('test_unmul.png', unmul);7var wptools = require('wptools');8var fs = require('fs');9var img = fs.readFileSync('test.png');10var buf = new Buffer(img);11var mul = wptools.multiplyAlpha(buf);12fs.writeFileSync('test_mul.png', mul);13var wptools = require('wptools');14var fs = require('fs');15var img = fs.readFileSync('test.png');16var buf = new Buffer(img);17var pre = wptools.premultiplyAlpha(buf);18fs.writeFileSync('test_pre.png', pre);19var wptools = require('wptools');20var fs = require('fs');21var img = fs.readFileSync('test.png');22var buf = new Buffer(img);23var unpre = wptools.unpremultiplyAlpha(buf);24fs.writeFileSync('test_unpre.png', unpre);25var wptools = require('wptools');26var fs = require('fs');27var img = fs.readFileSync('test.png');28var buf = new Buffer(img);29var conv = wptools.convertAlpha(buf);30fs.writeFileSync('test_conv.png', conv);31var wptools = require('wptools');32var fs = require('fs');

Using AI Code Generation

1var wptools = require('wp-tools');2var img = new wptools.Image('test.png');3img.unmultiplyAlpha(function(err, img) {4    if (err) throw err;5    img.save('test_out.png', function(err) {6        if (err) throw err;7    });8});9var Canvas = require('canvas')10  , canvas = new Canvas(200, 200)11  , ctx = canvas.getContext('2d');12var img = new Image;13img.src = 'test.png';14ctx.drawImage(img, 0, 0, 200, 200);15var out = fs.createWriteStream(__dirname + '/test_out.png')16  , stream = canvas.pngStream();17stream.on('data', function(chunk){18  out.write(chunk);19});20stream.on('end', function(){21  console.log('saved png');22});23I've tried using the ImageMagick module (

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