voluptasquisquam/src/image/compute/__tests__/relativePosition.js

Image processing and manipulation in JavaScript

import {Image, load} from 'test/common';
import 'should';

describe('we check the relative position', function () {
    it('check the extract without specify position', function () {
        let mask = new Image(2, 2, {
            kind: 'BINARY'
        });
        mask.setBitXY(0, 0);
        mask.setBitXY(1, 1);

        return load('BW4x4.png').then(function (image) {
            let position = image.getRelativePosition(mask);
            position.should.equal(false);
        });
    });

    it('check the extract without specify position but force top parent', function () {
        let mask = new Image(2, 2, {
            kind: 'BINARY'
        });
        mask.setBitXY(0, 0);
        mask.setBitXY(1, 1);

        return load('BW4x4.png').then(function (image) {
            let position = image.getRelativePosition(mask, {defaultFurther: true});
            position.should.eql([0, 0]);
        });
    });

    it('check by specify 1,1 position with parent', function () {

        return load('BW4x4.png').then(function (image) {

            let mask = new Image(2, 2, {
                kind: 'BINARY',
                position: [1, 1],
                parent: image
            });

            mask.setBitXY(0, 0);
            mask.setBitXY(1, 0);

            let position = mask.getRelativePosition(image);

            position.should.eql([1, 1]);
        });
    });
});