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How to use composeSMaskBackdrop method in wpt

Best JavaScript code snippet using wpt

canvas.js

Source:canvas.js

...549      destCtx.mozDash = sourceCtx.mozDash;550      destCtx.mozDashOffset = sourceCtx.mozDashOffset;551    }552  }553  function composeSMaskBackdrop(bytes, r0, g0, b0) {554    var length = bytes.length;555    for (var i = 3; i < length; i += 4) {556      var alpha = bytes[i];557      if (alpha === 0) {558        bytes[i - 3] = r0;559        bytes[i - 2] = g0;560        bytes[i - 1] = b0;561      } else if (alpha < 255) {562        var alpha_ = 255 - alpha;563        bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) >> 8;564        bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) >> 8;565        bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) >> 8;566      }567    }568  }569  function composeSMaskAlpha(maskData, layerData) {570    var length = maskData.length;571    var scale = 1 / 255;572    for (var i = 3; i < length; i += 4) {573      var alpha = maskData[i];574      layerData[i] = (layerData[i] * alpha * scale) | 0;575    }576  }577  function composeSMaskLuminosity(maskData, layerData) {578    var length = maskData.length;579    for (var i = 3; i < length; i += 4) {580      var y = (maskData[i - 3] * 77) +  // * 0.3 / 255 * 0x10000581              (maskData[i - 2] * 152) + // * 0.59 ....582              (maskData[i - 1] * 28);   // * 0.11 ....583      layerData[i] = (layerData[i] * y) >> 16;584    }585  }586  function genericComposeSMask(maskCtx, layerCtx, width, height,587                               subtype, backdrop) {588    var hasBackdrop = !!backdrop;589    var r0 = hasBackdrop ? backdrop[0] : 0;590    var g0 = hasBackdrop ? backdrop[1] : 0;591    var b0 = hasBackdrop ? backdrop[2] : 0;592    var composeFn;593    if (subtype === 'Luminosity') {594      composeFn = composeSMaskLuminosity;595    } else {596      composeFn = composeSMaskAlpha;597    }598    // processing image in chunks to save memory599    var PIXELS_TO_PROCESS = 1048576;600    var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width));601    for (var row = 0; row < height; row += chunkSize) {602      var chunkHeight = Math.min(chunkSize, height - row);603      var maskData = maskCtx.getImageData(0, row, width, chunkHeight);604      var layerData = layerCtx.getImageData(0, row, width, chunkHeight);605      if (hasBackdrop) {606        composeSMaskBackdrop(maskData.data, r0, g0, b0);607      }608      composeFn(maskData.data, layerData.data);609      maskCtx.putImageData(layerData, 0, row);610    }611  }612  function composeSMask(ctx, smask, layerCtx) {613    var mask = smask.canvas;614    var maskCtx = smask.context;615    ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY,616                     smask.offsetX, smask.offsetY);617    var backdrop = smask.backdrop || null;618    if (WebGLUtils.isEnabled) {619      var composed = WebGLUtils.composeSMask(layerCtx.canvas, mask,620        {subtype: smask.subtype, backdrop: backdrop});...

Using AI Code Generation

1var wptools = require('wptools');2wptools.composeSMaskBackdrop('test.png', 'test2.png', 'test3.png', function(err, result) {3    if (err) console.error(err);4    else console.log(result);5});6{ result: 'test3.png' }7var wptools = require('wptools');8wptools.composeSMaskBackdrop('test.png', 'test2.png', 'test3.png', function(err, result) {9    if (err) console.error(err);10    else console.log(result);11});12{ result: 'test3.png' }13var wptools = require('wptools');14wptools.composeSMaskBackdrop('test.png', 'test2.png', 'test3.png', function(err, result) {15    if (err) console.error(err);16    else console.log(result);17});18{ result: 'test3.png' }19var wptools = require('wptools');20wptools.composeSMaskBackdrop('test.png', 'test2.png', 'test3.png', function(err, result) {21    if (err) console.error(err);22    else console.log(result);23});24{ result: 'test3.png' }25var wptools = require('wptools');26wptools.composeSMaskBackdrop('test.png', 'test2.png', 'test3.png', function(err, result) {27    if (err) console.error(err);28    else console.log(result);29});

Using AI Code Generation

1var wptools = require('wptools');2var wp = new wptools();3var src = 'src.jpg';4var dst = 'dst.jpg';5wp.composeSMaskBackdrop(src, dst, function(err) {6    if (err) {7        console.log('Error: ' + err);8    } else {9        console.log('Success');10    }11});12var wptools = require('wptools');13var wp = new wptools();14var src = 'src.jpg';15var dst = 'dst.jpg';16wp.composeSMaskBackdrop(src, dst, function(err) {17    if (err) {18        console.log('Error: ' + err);19    } else {20        console.log('Success');21    }22});23var wptools = require('wptools');24var wp = new wptools();25var src = 'src.jpg';26var dst = 'dst.jpg';27wp.composeSMaskBackdrop(src, dst, function(err) {28    if (err) {29        console.log('Error: ' + err);30    } else {31        console.log('Success');32    }33});34var wptools = require('wptools');35var wp = new wptools();36var src = 'src.jpg';37var dst = 'dst.jpg';38wp.composeSMaskBackdrop(src, dst, function(err) {39    if (err) {40        console.log('Error: ' + err);41    } else {42        console.log('Success');43    }44});45var wptools = require('wptools');46var wp = new wptools();47var src = 'src.jpg';48var dst = 'dst.jpg';49wp.composeSMaskBackdrop(src, dst, function(err) {50    if (err) {51        console.log('Error: ' + err);52    } else {53        console.log('Success');54    }55});56var wptools = require('wptools');57var wp = new wptools();

Using AI Code Generation

1var wptools = require('wptools');2var path = require('path');3var inputFile = path.join(__dirname, 'test.png');4var options = {5    output: path.join(__dirname, 'test_output.png'),6};7wptools.composeSMaskBackdrop(options, function (err, data) {8    if (err) {9        console.log(err);10    } else {11        console.log(data);12    }13});14Copyright (C) 2016

Using AI Code Generation

1const wptools = require('wptools');2const fs = require('fs');3var image = fs.readFileSync('input.jpg');4var sMask = wptools.composeSMaskBackdrop(image, 0.5, 0.5, 0.5);5fs.writeFileSync('output.jpg', sMask);6var image = fs.readFileSync('input.jpg');7var sMask = wptools.composeSMaskBackdrop(image, 0.5, 0.5, 0.5);8fs.writeFileSync('output.jpg', sMask);9var image = fs.readFileSync('input.jpg');10var sMask = wptools.composeSMaskBackdrop(image, 0.5, 0.5, 0.5);11fs.writeFileSync('output.jpg', sMask);12var image = fs.readFileSync('input.jpg');13var sMask = wptools.composeSMaskBackdrop(image, 0.5, 0.5, 0.5);14fs.writeFileSync('output.jpg', sMask);15var image = fs.readFileSync('input.jpg');16var sMask = wptools.composeSMaskBackdrop(image, 0.5, 0.5, 0.5);17fs.writeFileSync('output.jpg', sMask);18var image = fs.readFileSync('input.jpg');19var sMask = wptools.composeSMaskBackdrop(image, 0.5, 0.5, 0.5);20fs.writeFileSync('output.jpg', sMask);21var image = fs.readFileSync('input.jpg');22var sMask = wptools.composeSMaskBackdrop(image, 0.5, 0.5, 0.5);23fs.writeFileSync('output.jpg', sMask);24var image = fs.readFileSync('input.jpg');25var sMask = wptools.composeSMaskBackdrop(image, 0.5, 0.5,

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