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"path-parse": "^1.0.7", + "supports-preserve-symlinks-flag": "^1.0.0" + } + }, "rfdc": { "version": "1.3.0", "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.3.0.tgz", @@ -5422,6 +5913,12 @@ "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==", "dev": true }, + "sourcemap-codec": { + "version": "1.4.8", + "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.8.tgz", + "integrity": "sha512-9NykojV5Uih4lgo5So5dtw+f0JgJX30KCNI8gwhz2J9A15wD0Ml6tjHKwf6fTSa6fAdVBdZeNOs9eJ71qCk8vA==", + "dev": true + }, "statuses": { "version": "1.5.0", "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz", @@ -5500,6 +5997,12 @@ "has-flag": "^4.0.0" } }, + "supports-preserve-symlinks-flag": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz", + "integrity": 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dist/svgcanvas.esm.js -f es && rollup test/index.js -o dist/test.js -f iife && rollup test/rendering.test.js -o dist/rendering.test.js -f iife", + "build": "rollup -c", "prepublishOnly": "npm run build", "test": "karma start" }, @@ -20,6 +20,9 @@ "author": "Zeno Zeng", "license": "MIT", "devDependencies": { + "@rollup/plugin-commonjs": "^21.0.2", + "@rollup/plugin-node-resolve": "^13.1.3", + "chai": "^4.3.6", "karma": "^6.3.17", "karma-chrome-launcher": "^3.1.0", "karma-coverage": "^2.2.0", diff --git a/rollup.config.js b/rollup.config.js new file mode 100644 index 0000000..1f05af6 --- /dev/null +++ b/rollup.config.js @@ -0,0 +1,34 @@ +import { nodeResolve } from '@rollup/plugin-node-resolve'; +import commonjs from '@rollup/plugin-commonjs'; + +export default [ + { + input: 'index.js', + output: { + file: 'dist/svgcanvas.js', + format: 'cjs' + } + }, + { + input: 'index.js', + output: { + file: 'dist/svgcanvas.esm.js', + format: 'esm' + } + }, + { + input: 'test/index.js', + output: { + file: 'dist/test.js', + format: 'iife' + } + }, + { + input: 'test/rendering.test.js', + output: { + file: 'dist/rendering.test.js', + format: 'iife' + }, + plugins: [nodeResolve(), commonjs()] + }, +] \ No newline at end of file diff --git a/test/rendering.test.js b/test/rendering.test.js index 0c58d98..0188782 100644 --- a/test/rendering.test.js +++ b/test/rendering.test.js @@ -1,4 +1,5 @@ -import {Element} from '../index' +import { Element } from '../index' +import { expect } from 'chai' import arc from './tests/arc' import arcTo from './tests/arcTo' import arcTo2 from './tests/arcTo2' @@ -51,6 +52,35 @@ class RenderingTester { const height = 500; const canvas = document.createElement('canvas'); const svgcanvas = new Element(); + + [canvas, svgcanvas].forEach((canvas) => { + canvas.width = width + canvas.height = height + const ctx = canvas.getContext('2d') + this.fn(ctx) + }) + + // Pixels + const svg = svgcanvas.toDataURL("image/svg+xml"); + const svgImage = await new Promise((resolve) => { + var svgImage = new Image(); + svgImage.onload = function () { + resolve(svgImage) + } + svgImage.src = svg; + }) + const svgPixels = this.getPixels(svgImage); + const canvasPixels = this.getPixels(canvas); + const diffPixels = this.diffPixels(svgPixels, canvasPixels); + const removeThinLinesPixels = this.removeThinLines(this.removeThinLines(diffPixels)); + const count = Math.max(this.countPixels(svgPixels), this.countPixels(canvasPixels)); + const diffCount = this.countPixels(diffPixels); + console.log({ count, diffCount }) + if (count === 0 && diffCount === 0) { + return 0 + } + const diffRate = diffCount / count; + return diffRate; } getPixels(image) { @@ -62,7 +92,19 @@ class RenderingTester { const ctx = canvas.getContext('2d'); ctx.drawImage(image, 0, 0, width, height); return ctx.getImageData(0, 0, width, height); - } + } + + // count non transparent pixels + countPixels(imgData) { + var count = 0; + for (var i = 3; i < imgData.data.length; i += 4) { + if (imgData.data[i] > 0) { + count++; + } + } + return count; + }; + diffPixels(imgData1, imgData2) { const canvas = document.createElement('canvas'); @@ -71,24 +113,79 @@ class RenderingTester { const diffImgData = canvas.getContext('2d').getImageData(0, 0, width, height); let $this = this; for (var i = 0; i < imgData1.data.length; i += 4) { - var indexes = [i, i+1, i+2, i+3]; - indexes.forEach(function(i) { + var indexes = [i, i + 1, i + 2, i + 3]; + indexes.forEach(function (i) { diffImgData.data[i] = 0; }); - if(indexes.some(function(i) { + if (indexes.some(function (i) { return Math.abs(imgData1.data[i] - imgData2.data[i]) > $this.maxPixelDiff; })) { - diffImgData.data[i+3] = 255; // set black + diffImgData.data[i + 3] = 255; // set black } } return diffImgData; - } + } + + removeThinLines(imageData) { + const canvas = document.createElement('canvas'); + const width = 100 * config.pixelDensity; + const height = 100 * config.pixelDensity; + canvas.width = width; + canvas.height = height; + const ctx = canvas.getContext('2d'); + ctx.putImageData(imageData, 0, 0); + var imgData = ctx.getImageData(0, 0, canvas.width, canvas.height); + var imgDataCopy = ctx.getImageData(0, 0, canvas.width, canvas.height); + + var getPixelIndex = function (x, y) { + return (y * width + x) * 4 + 3; + }; + + var getPixel = function (x, y) { + var alphaIndex = getPixelIndex(x, y); + return imgDataCopy.data[alphaIndex]; + }; + + var setPixel = function (x, y, value) { + imgData.data[getPixelIndex(x, y)] = value; + }; + + for (var x = 1; x < width - 1; x++) { + for (var y = 1; y < height - 1; y++) { + if (getPixel(x, y) == 0) { + continue; // ignore transparents + } + var links = [ + { x: x - 1, y: y - 1 }, + { x: x, y: y - 1 }, + { x: x + 1, y: y - 1 }, + { x: x - 1, y: y }, + { x: x + 1, y: y }, + { x: x - 1, y: y + 1 }, + { x: x, y: y + 1 }, + { x: x + 1, y: y + 1 } + ].map(function (p) { + return getPixel(p.x, p.y); + }).filter(function (val) { + return val > 0; // not transparent? + }).length; + + if (links < 5) { // is a thin line + setPixel(x, y, 0); // make it transparent + } + } + } + return imgData; + } } describe('RenderTest', () => { for (let fn of Object.keys(tests)) { it(`should render same results for ${fn}`, async () => { - + const tester = new RenderingTester(tests[fn]); + const diffRate = await tester.test(); + console.log({ diffRate, fn }); + expect(diffRate).to.lessThan(0.05); }) } })