test: diff pixels

This commit is contained in:
Zeno Zeng 2022-03-09 22:33:31 +08:00
parent bd26732bff
commit c192c00864
4 changed files with 652 additions and 9 deletions

509
package-lock.json generated
View File

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"@types/resolve": "1.17.1",
"builtin-modules": "^3.1.0",
"deepmerge": "^4.2.2",
"is-module": "^1.0.0",
"resolve": "^1.19.0"
}
},
"@rollup/pluginutils": {
"version": "3.1.0",
"resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-3.1.0.tgz",
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"dev": true,
"requires": {
"@types/estree": "0.0.39",
"estree-walker": "^1.0.1",
"picomatch": "^2.2.2"
}
},
"@socket.io/base64-arraybuffer": {
"version": "1.0.2",
"resolved": "https://registry.npmjs.org/@socket.io/base64-arraybuffer/-/base64-arraybuffer-1.0.2.tgz",
@ -3620,12 +3950,27 @@
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},
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"version": "0.0.39",
"resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
"integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw==",
"dev": true
},
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"version": "17.0.21",
"resolved": "https://registry.npmjs.org/@types/node/-/node-17.0.21.tgz",
"integrity": "sha512-DBZCJbhII3r90XbQxI8Y9IjjiiOGlZ0Hr32omXIZvwwZ7p4DMMXGrKXVyPfuoBOri9XNtL0UK69jYIBIsRX3QQ==",
"dev": true
},
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"version": "1.17.1",
"resolved": "https://registry.npmjs.org/@types/resolve/-/resolve-1.17.1.tgz",
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"dev": true,
"requires": {
"@types/node": "*"
}
},
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"version": "2.9.2",
"resolved": "https://registry.npmjs.org/@types/yauzl/-/yauzl-2.9.2.tgz",
@ -3715,6 +4060,12 @@
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"dev": true
},
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"version": "1.1.0",
"resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
"integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
"dev": true
},
"balanced-match": {
"version": "1.0.2",
"resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
@ -3822,6 +4173,12 @@
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"dev": true
},
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"resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.2.0.tgz",
"integrity": "sha512-lGzLKcioL90C7wMczpkY0n/oART3MbBa8R9OFGE1rJxoVI86u4WAGfEk8Wjv10eKSyTHVGkSo3bvBylCEtk7LA==",
"dev": true
},
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"resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
@ -3840,6 +4197,21 @@
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"dev": true
},
"chai": {
"version": "4.3.6",
"resolved": "https://registry.npmjs.org/chai/-/chai-4.3.6.tgz",
"integrity": "sha512-bbcp3YfHCUzMOvKqsztczerVgBKSsEijCySNlHHbX3VG1nskvqjz5Rfso1gGwD6w6oOV3eI60pKuMOV5MV7p3Q==",
"dev": true,
"requires": {
"assertion-error": "^1.1.0",
"check-error": "^1.0.2",
"deep-eql": "^3.0.1",
"get-func-name": "^2.0.0",
"loupe": "^2.3.1",
"pathval": "^1.1.1",
"type-detect": "^4.0.5"
}
},
"chalk": {
"version": "4.1.2",
"resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
@ -3861,6 +4233,12 @@
}
}
},
"check-error": {
"version": "1.0.2",
"resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
"integrity": "sha512-BrgHpW9NURQgzoNyjfq0Wu6VFO6D7IZEmJNdtgNqpzGG8RuNFHt2jQxWlAs4HMe119chBnv+34syEZtc6IhLtA==",
"dev": true
},
"chokidar": {
"version": "3.5.3",
"resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.5.3.tgz",
@ -3909,6 +4287,12 @@
"integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
"dev": true
},
"commondir": {
"version": "1.0.1",
"resolved": "https://registry.npmjs.org/commondir/-/commondir-1.0.1.tgz",
"integrity": "sha512-W9pAhw0ja1Edb5GVdIF1mjZw/ASI0AlShXM83UUGe2DVr5TdAPEA1OA8m/g8zWp9x6On7gqufY+FatDbC3MDQg==",
"dev": true
},
"component-emitter": {
"version": "1.3.0",
"resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@ -4008,6 +4392,21 @@
"integrity": "sha512-9iE1PgSik9HeIIw2JO94IidnE3eBoQrFJ3w7sFuzSX4DpmZ3v5sZpUiV5Swcf6mQEF+Y0ru8Neo+p+nyh2J+hQ==",
"dev": true
},
"deep-eql": {
"version": "3.0.1",
"resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
"integrity": "sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==",
"dev": true,
"requires": {
"type-detect": "^4.0.0"
}
},
"deepmerge": {
"version": "4.2.2",
"resolved": "https://registry.npmjs.org/deepmerge/-/deepmerge-4.2.2.tgz",
"integrity": "sha512-FJ3UgI4gIl+PHZm53knsuSFpE+nESMr7M4v9QcgB7S63Kj/6WqMiFQJpBBYz1Pt+66bZpP3Q7Lye0Oo9MPKEdg==",
"dev": true
},
"depd": {
"version": "1.1.2",
"resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
@ -4145,6 +4544,12 @@
"integrity": "sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA==",
"dev": true
},
"estree-walker": {
"version": "1.0.1",
"resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-1.0.1.tgz",
"integrity": "sha512-1fMXF3YP4pZZVozF8j/ZLfvnR8NSIljt56UhbZ5PeeDmmGHpgpdwQt7ITlGvYaQukCvuBRMLEiKiYC+oeIg4cg==",
"dev": true
},
"eventemitter3": {
"version": "4.0.7",
"resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.7.tgz",
@ -4277,6 +4682,12 @@
"dev": true,
"optional": true
},
"function-bind": {
"version": "1.1.1",
"resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
"integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
"dev": true
},
"gensync": {
"version": "1.0.0-beta.2",
"resolved": "https://registry.npmjs.org/gensync/-/gensync-1.0.0-beta.2.tgz",
@ -4289,6 +4700,12 @@
"integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==",
"dev": true
},
"get-func-name": {
"version": "2.0.0",
"resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.0.tgz",
"integrity": "sha512-Hm0ixYtaSZ/V7C8FJrtZIuBBI+iSgL+1Aq82zSu8VQNB4S3Gk8e7Qs3VwBDJAhmRZcFqkl3tQu36g/Foh5I5ig==",
"dev": true
},
"get-stream": {
"version": "5.2.0",
"resolved": "https://registry.npmjs.org/get-stream/-/get-stream-5.2.0.tgz",
@ -4339,6 +4756,15 @@
"integrity": "sha512-qBr4OuELkhPenW6goKVXiv47US3clb3/IbuWF9KNKEijAy9oeHxU9IgzjvJhHkUzhaj7rOUD7+YGWqUjLp5oSA==",
"dev": true
},
"has": {
"version": "1.0.3",
"resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
"integrity": "sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==",
"dev": true,
"requires": {
"function-bind": "^1.1.1"
}
},
"has-flag": {
"version": "4.0.0",
"resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
@ -4448,6 +4874,15 @@
"binary-extensions": "^2.0.0"
}
},
"is-core-module": {
"version": "2.8.1",
"resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.8.1.tgz",
"integrity": "sha512-SdNCUs284hr40hFTFP6l0IfZ/RSrMXF3qgoRHd3/79unUTvrFO/JoXwkGm+5J/Oe3E/b5GsnG330uUNgRpu1PA==",
"dev": true,
"requires": {
"has": "^1.0.3"
}
},
"is-extglob": {
"version": "2.1.1",
"resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
@ -4469,6 +4904,12 @@
"is-extglob": "^2.1.1"
}
},
"is-module": {
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/is-module/-/is-module-1.0.0.tgz",
"integrity": "sha512-51ypPSPCoTEIN9dy5Oy+h4pShgJmPCygKfyRCISBI+JoWT/2oJvK8QPxmwv7b/p239jXrm9M1mlQbyKJ5A152g==",
"dev": true
},
"is-number": {
"version": "7.0.0",
"resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
@ -4481,6 +4922,15 @@
"integrity": "sha512-YWnfyRwxL/+SsrWYfOpUtz5b3YD+nyfkHvjbcanzk8zgyO4ASD67uVMRt8k5bM4lLMDnXfriRhOpemw+NfT1eA==",
"dev": true
},
"is-reference": {
"version": "1.2.1",
"resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.2.1.tgz",
"integrity": "sha512-U82MsXXiFIrjCK4otLT+o2NA2Cd2g5MLoOVXUZjIOhLurrRxpEXzI8O0KZHr3IjLvlAH1kTPYSuqer5T9ZVBKQ==",
"dev": true,
"requires": {
"@types/estree": "*"
}
},
"is-unicode-supported": {
"version": "0.1.0",
"resolved": "https://registry.npmjs.org/is-unicode-supported/-/is-unicode-supported-0.1.0.tgz",
@ -4850,6 +5300,24 @@
}
}
},
"loupe": {
"version": "2.3.4",
"resolved": "https://registry.npmjs.org/loupe/-/loupe-2.3.4.tgz",
"integrity": "sha512-OvKfgCC2Ndby6aSTREl5aCCPTNIzlDfQZvZxNUrBrihDhL3xcrYegTblhmEiCrg2kKQz4XsFIaemE5BF4ybSaQ==",
"dev": true,
"requires": {
"get-func-name": "^2.0.0"
}
},
"magic-string": {
"version": "0.25.9",
"resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.25.9.tgz",
"integrity": "sha512-RmF0AsMzgt25qzqqLc1+MbHmhdx0ojF2Fvs4XnOqz2ZOBXzzkEwc/dJQZCYHAn7v1jbVOjAZfK8msRn4BxO4VQ==",
"dev": true,
"requires": {
"sourcemap-codec": "^1.4.8"
}
},
"make-dir": {
"version": "3.1.0",
"resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz",
@ -5130,6 +5598,18 @@
"integrity": "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg==",
"dev": true
},
"path-parse": {
"version": "1.0.7",
"resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
"integrity": "sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==",
"dev": true
},
"pathval": {
"version": "1.1.1",
"resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
"integrity": "sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==",
"dev": true
},
"pend": {
"version": "1.2.0",
"resolved": "https://registry.npmjs.org/pend/-/pend-1.2.0.tgz",
@ -5294,6 +5774,17 @@
"integrity": "sha512-KigOCHcocU3XODJxsu8i/j8T9tzT4adHiecwORRQ0ZZFcp7ahwXuRU1m+yuO90C5ZUyGeGfocHDI14M3L3yDAQ==",
"dev": true
},
"resolve": {
"version": "1.22.0",
"resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.0.tgz",
"integrity": "sha512-Hhtrw0nLeSrFQ7phPp4OOcVjLPIeMnRlr5mcnVuMe7M/7eBn98A3hmFRLoFo3DLZkivSYwhRUJTyPyWAk56WLw==",
"dev": true,
"requires": {
"is-core-module": "^2.8.1",
"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": "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==",
"dev": true
},
"tar-fs": {
"version": "2.1.1",
"resolved": "https://registry.npmjs.org/tar-fs/-/tar-fs-2.1.1.tgz",
@ -5567,6 +6070,12 @@
"integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==",
"dev": true
},
"type-detect": {
"version": "4.0.8",
"resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
"integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
"dev": true
},
"type-is": {
"version": "1.6.18",
"resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",

View File

@ -4,7 +4,7 @@
"description": "svgcanvas",
"main": "dist/svgcanvas.js",
"scripts": {
"build": "rollup index.js -o dist/svgcanvas.js -f cjs && rollup index.js -o 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",

34
rollup.config.js Normal file
View File

@ -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()]
},
]

View File

@ -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);
})
}
})