20 lines
547 B
JavaScript
20 lines
547 B
JavaScript
var mapnik = require('@carto/mapnik');
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function compare(buffer, fixtureRelPath) {
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save(__dirname + '/../results/' + fixtureRelPath, buffer);
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var img = new mapnik.Image.fromBytesSync(buffer);
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var reference = new mapnik.Image.openSync(__dirname + '/../fixtures/image/' + fixtureRelPath);
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return img.compare(reference) / (reference.width() * reference.height());
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}
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function save(path, buffer) {
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var img = new mapnik.Image.fromBytesSync(buffer);
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img.save(path);
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}
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module.exports = {
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compare: compare,
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save: save
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};
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