voluptasquisquam/src/image/roi/__tests__/maxlength.js

Image processing and manipulation in JavaScript

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

/* Image to test:
0011
1111
1100
0100
 */
describe('Get the maxLength of the Roi and the points', function () {
    let data = new Uint8Array(2);
    data[0] = 63;
    data[1] = 196;

    let mask = new Image(4, 4, data, {
        kind: 'BINARY'
    });

    let roiManager = mask.getRoiManager();
    roiManager.fromMask(mask);
    it('vectors X and Y', function () {
        let results = roiManager.getRois();
        results[0].points.slice(0, 3).should.eql([[2, 0], [3, 0], [0, 1]]);
    });


    it('maxLengthPoints', function () {
        let result = roiManager.getRois();
        result[0].maxLengthPoints.should.eql([[3, 0], [1, 3]]);
    });

    it('maxLength', function () {
        let result = roiManager.getRois();
        result[0].maxLength.should.equal(Math.sqrt(13));
    });
});