a3663ce17c
Summary: This commit adds an HTML file for creating perceptual diffs (pdiff.html), a reference screenshot of that HTML file (pdiff.png), and a quick script for comparing that screenshot to a newly generated one (pdiff.js). Also added a basic README. Test Plan: make pdiff Reviewers: alpert Reviewed By: alpert Differential Revision: http://phabricator.khanacademy.org/D6415
37 lines
1.0 KiB
JavaScript
37 lines
1.0 KiB
JavaScript
var fs = require('fs'),
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gm = require('gm'),
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path = require('path');
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var original = path.join(__dirname, 'pdiff.png'),
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modified = path.join(__dirname, '../build/pdiff.png'),
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difference = path.join(__dirname, '../build/DIFF.png');
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var colors = {
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reset: "\033[0m",
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red: "\033[31m",
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green: "\033[32m"
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};
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function log(message, color) {
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console.log(color + message + colors.reset);
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}
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gm.compare(original, modified, /* tolerance */ 0, function(err, isEqual) {
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if (err) {
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console.error(err);
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} else if (isEqual) {
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log("No perceptible differences.", colors.green);
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// Remove any previously generated difference images
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fs.unlink(difference, function() {});
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} else {
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log("Perceptible difference detected! See build/DIFF.png", colors.red);
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// Generate new difference image
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gm.compare(original, modified, {
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/* output */ file: difference
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}, function(err) {
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if (err) {
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console.error(err);
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}
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});
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}
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}); |