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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