32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
import _ol_render_canvas_ReplayGroup_ from '../../../../../src/ol/render/canvas/ReplayGroup.js';
|
|
|
|
|
|
describe('ol.render.canvas.ReplayGroup', function() {
|
|
|
|
describe('#getCircleArray_', function() {
|
|
it('creates an array with a pixelated circle marked with true', function() {
|
|
var radius = 10;
|
|
var minRadiusSq = Math.pow(radius - Math.SQRT2, 2);
|
|
var maxRadiusSq = Math.pow(radius + Math.SQRT2, 2);
|
|
var circleArray = _ol_render_canvas_ReplayGroup_.getCircleArray_(radius);
|
|
var size = radius * 2 + 1;
|
|
expect(circleArray.length).to.be(size);
|
|
|
|
for (var i = 0; i < size; i++) {
|
|
expect(circleArray[i].length).to.be(size);
|
|
for (var j = 0; j < size; j++) {
|
|
var dx = Math.abs(radius - i);
|
|
var dy = Math.abs(radius - j);
|
|
var distanceSq = Math.pow(dx, 2) + Math.pow(dy, 2);
|
|
if (circleArray[i][j] === true) {
|
|
expect(distanceSq).to.be.within(0, maxRadiusSq);
|
|
} else {
|
|
expect(distanceSq).to.be.within(minRadiusSq, Infinity);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
});
|