/**
* @license
* Copyright The Closure Library Authors.
* SPDX-License-Identifier: Apache-2.0
*/
goog.module('goog.math.RectTest');
goog.setTestOnly();
const Box = goog.require('goog.math.Box');
const Coordinate = goog.require('goog.math.Coordinate');
const GoogRect = goog.require('goog.math.Rect');
const Size = goog.require('goog.math.Size');
const testSuite = goog.require('goog.testing.testSuite');
/**
* Produce legible assertion results. If two rects are not equal, the error
* message will be of the form
* "Expected <(1, 2 - 10 x 10)> (Object) but was <(3, 4 - 20 x 20)> (Object)"
*/
function assertRectsEqual(expected, actual) {
if (!GoogRect.equals(expected, actual)) {
assertEquals(expected, actual);
}
}
/**
* Create a GoogRect with given coordinates.
* @param {Array<number>} a Array of numbers with given coordinates for rect,
* with expected order [x1, y1, x2, y2].
* @return {?GoogRect} A rectangle, if coordinates were given.
*/
function createRect(a) {
return a ? new GoogRect(a[0], a[1], a[2] - a[0], a[3] - a[1]) : null;
}
/**
* Create a rect like object.
* @param {Array<number>} a Array of numbers with given coordinates for rect,
* with expected order [x1, y1, x2, y2].
* @return {?{left: number, top: number, width: number, height: number}} A rect
* like object.
*/
function createIRect(a) {
if (a) {
return {left: a[0], top: a[1], width: a[2] - a[0], height: a[3] - a[1]};
}
return null;
}
function assertDifference(a, b, expected) {
const r0 = createRect(a);
const r1 = createRect(b);
const diff1 = GoogRect.difference(r0, r1);
assertEquals(
'Wrong number of rectangles in difference ', expected.length,
diff1.length);
for (let j = 0; j < expected.length; ++j) {
const e = createRect(expected[j]);
if (!GoogRect.equals(e, diff1[j])) {
alert(`${j}: ${e} != ` + diff1[j]);
}
assertRectsEqual(e, diff1[j]);
}
// Test in place version
const diff2 = r0.difference(r1);
assertEquals(
'Wrong number of rectangles in in-place difference ', expected.length,
diff2.length);
for (let j = 0; j < expected.length; ++j) {
const e = createRect(expected[j]);
if (!GoogRect.equals(e, diff2[j])) {
alert(`${j}: ${e} != ` + diff2[j]);
}
assertRectsEqual(e, diff2[j]);
}
}
function rectToBoxAndBackTest(rect) {
const box = rect.toBox();
const rect2 = GoogRect.createFromBox(box);
// Use toString for this test since otherwise NaN != NaN.
assertObjectEquals(rect.toString(), rect2.toString());
}
function boxToRectAndBackTest(box) {
const rect = GoogRect.createFromBox(box);
const box2 = rect.toBox();
// Use toString for this test since otherwise NaN != NaN.
assertEquals(box.toString(), box2.toString());
}
testSuite({
testRectClone() {
const r = new GoogRect(0, 0, 0, 0);
assertRectsEqual(r, r.clone());
r.left = -10;
r.top = -20;
r.width = 10;
r.height = 20;
assertRectsEqual(r, r.clone());
},
testRectIntersection() {
const tests = [
[[10, 10, 20, 20], [15, 15, 25, 25], [15, 15, 20, 20]],
[[10, 10, 20, 20], [20, 0, 30, 10], [20, 10, 20, 10]],
[[0, 0, 1, 1], [10, 11, 12, 13], null],
[[11, 12, 98, 99], [22, 23, 34, 35], [22, 23, 34, 35]],
];
const intersectTest = (r0, r1, expected) => {
assertRectsEqual(expected, GoogRect.intersection(r0, r1));
assertRectsEqual(expected, GoogRect.intersection(r1, r0));
// Test in place methods.
const clone = r0.clone();
assertRectsEqual(expected, clone.intersection(r1) ? clone : null);
if (r1.intersection) {
assertRectsEqual(expected, r1.intersection(r0) ? r1 : null);
}
};
for (let i = 0; i < tests.length; ++i) {
const t = tests[i];
const r0 = createRect(t[0]);
const r1 = createRect(t[1]);
const expected = createRect(t[2]);
intersectTest(r0, r1, expected);
}
// Run same tests with IRects.
for (let i = 0; i < tests.length; ++i) {
const t = tests[i];
const r0 = createRect(t[0]);
const r1 = createIRect(t[1]);
const expected = createRect(t[2]);
intersectTest(r0, r1, expected);
}
},
testRectIntersects() {
const r0 = createRect([10, 10, 20, 20]);
const r1 = createRect([15, 15, 25, 25]);
const r2 = createRect([0, 0, 1, 1]);
const ri0 = createIRect([10, 10, 20, 20]);
const ri1 = createIRect([15, 15, 25, 25]);
const ri2 = createIRect([0, 0, 1, 1]);
assertTrue(GoogRect.intersects(r0, r1));
assertTrue(GoogRect.intersects(r1, r0));
assertTrue(r0.intersects(r1));
assertTrue(r1.intersects(r0));
assertTrue(GoogRect.intersects(r0, ri1));
assertTrue(GoogRect.intersects(ri0, ri1));
assertTrue(GoogRect.intersects(ri1, r0));
assertTrue(r0.intersects(ri1));
assertFalse(GoogRect.intersects(r0, r2));
assertFalse(GoogRect.intersects(r2, r0));
assertFalse(r0.intersects(r2));
assertFalse(r2.intersects(r0));
assertFalse(GoogRect.intersects(ri0, ri2));
assertFalse(GoogRect.intersects(ri2, ri0));
assertFalse(r0.intersects(ri2));
assertFalse(r2.intersects(ri0));
},
testRectBoundingRect() {
const tests = [
[[10, 10, 20, 20], [15, 15, 25, 25], [10, 10, 25, 25]],
[[10, 10, 20, 20], [20, 0, 30, 10], [10, 0, 30, 20]],
[[0, 0, 1, 1], [10, 11, 12, 13], [0, 0, 12, 13]],
[[11, 12, 98, 99], [22, 23, 34, 35], [11, 12, 98, 99]],
];
for (let i = 0; i < tests.length; ++i) {
const t = tests[i];
const r0 = createRect(t[0]);
const r1 = createRect(t[1]);
const expected = createRect(t[2]);
assertRectsEqual(expected, GoogRect.boundingRect(r0, r1));
assertRectsEqual(expected, GoogRect.boundingRect(r1, r0));
// Test in place methods.
const clone = r0.clone();
clone.boundingRect(r1);
assertRectsEqual(expected, clone);
r1.boundingRect(r0);
assertRectsEqual(expected, r1);
}
},
testRectDifference() {
// B is the same as A.
assertDifference([10, 10, 20, 20], [10, 10, 20, 20], []);
// B does not touch A.
assertDifference([10, 10, 20, 20], [0, 0, 5, 5], [[10, 10, 20, 20]]);
// B overlaps top half of A.
assertDifference([10, 10, 20, 20], [5, 15, 25, 25], [[10, 10, 20, 15]]);
// B overlaps bottom half of A.
assertDifference([10, 10, 20, 20], [5, 5, 25, 15], [[10, 15, 20, 20]]);
// B overlaps right half of A.
assertDifference([10, 10, 20, 20], [15, 5, 25, 25], [[10, 10, 15, 20]]);
// B overlaps left half of A.
assertDifference([10, 10, 20, 20], [5, 5, 15, 25], [[15, 10, 20, 20]]);
// B touches A at its bottom right corner
assertDifference([10, 10, 20, 20], [20, 20, 30, 30], [[10, 10, 20, 20]]);
// B touches A at its top left corner
assertDifference([10, 10, 20, 20], [5, 5, 10, 10], [[10, 10, 20, 20]]);
// B touches A along its bottom edge
assertDifference([10, 10, 20, 20], [12, 20, 17, 25], [[10, 10, 20, 20]]);
// B splits A horizontally.
assertDifference(
[10, 10, 20, 20], [5, 12, 25, 18],
[[10, 10, 20, 12], [10, 18, 20, 20]]);
// B splits A vertically.
assertDifference(
[10, 10, 20, 20], [12, 5, 18, 25],
[[10, 10, 12, 20], [18, 10, 20, 20]]);
// B subtracts a notch from the top of A.
assertDifference(
[10, 10, 20, 20], [12, 5, 18, 15],
[[10, 15, 20, 20], [10, 10, 12, 15], [18, 10, 20, 15]]);
// B subtracts a notch from the bottom left of A
assertDifference([1, 6, 3, 9], [1, 7, 2, 9], [[1, 6, 3, 7], [2, 7, 3, 9]]);
// B subtracts a notch from the bottom right of A
assertDifference([1, 6, 3, 9], [2, 7, 3, 9], [[1, 6, 3, 7], [1, 7, 2, 9]]);
// B subtracts a notch from the top left of A
assertDifference([1, 6, 3, 9], [1, 6, 2, 8], [[1, 8, 3, 9], [2, 6, 3, 8]]);
// B subtracts a notch from the top left of A (no coinciding edge)
assertDifference([1, 6, 3, 9], [0, 5, 2, 8], [[1, 8, 3, 9], [2, 6, 3, 8]]);
// B subtracts a hole from the center of A.
assertDifference([-20, -20, -10, -10], [-18, -18, -12, -12], [
[-20, -20, -10, -18],
[-20, -12, -10, -10],
[-20, -18, -18, -12],
[-12, -18, -10, -12],
]);
},
testRectToBox() {
const r = new GoogRect(0, 0, 0, 0);
assertObjectEquals(new Box(0, 0, 0, 0), r.toBox());
r.top = 10;
r.left = 10;
r.width = 20;
r.height = 20;
assertObjectEquals(new Box(10, 30, 30, 10), r.toBox());
r.top = -10;
r.left = 0;
r.width = 10;
r.height = 10;
assertObjectEquals(new Box(-10, 10, 0, 0), r.toBox());
},
testBoxToRect() {
const box = new Box(0, 0, 0, 0);
assertObjectEquals(new GoogRect(0, 0, 0, 0), GoogRect.createFromBox(box));
box.top = 10;
box.left = 15;
box.right = 23;
box.bottom = 27;
assertObjectEquals(
new GoogRect(15, 10, 8, 17), GoogRect.createFromBox(box));
box.top = -10;
box.left = 3;
box.right = 12;
box.bottom = 7;
assertObjectEquals(
new GoogRect(3, -10, 9, 17), GoogRect.createFromBox(box));
},
testBoxToRectAndBack() {
rectToBoxAndBackTest(new GoogRect(8, 11, 20, 23));
rectToBoxAndBackTest(new GoogRect(9, 13, NaN, NaN));
rectToBoxAndBackTest(new GoogRect(10, 13, NaN, 21));
rectToBoxAndBackTest(new GoogRect(5, 7, 14, NaN));
},
testRectToBoxAndBack() {
// This doesn't work if left or top is undefined.
boxToRectAndBackTest(new Box(11, 13, 20, 17));
boxToRectAndBackTest(new Box(10, NaN, NaN, 11));
boxToRectAndBackTest(new Box(9, 14, NaN, 11));
boxToRectAndBackTest(new Box(10, NaN, 22, 15));
},
testRectContainsRect() {
const r = new GoogRect(-10, 0, 20, 10);
assertTrue(r.contains(r));
assertFalse(r.contains(new GoogRect(NaN, NaN, NaN, NaN)));
const r2 = new GoogRect(0, 2, 5, 5);
assertTrue(r.contains(r2));
assertFalse(r2.contains(r));
r2.left = -11;
assertFalse(r.contains(r2));
r2.left = 0;
r2.width = 15;
assertFalse(r.contains(r2));
r2.width = 5;
r2.height = 10;
assertFalse(r.contains(r2));
r2.top = 0;
assertTrue(r.contains(r2));
},
testRectContainsCoordinate() {
const r = new GoogRect(20, 40, 60, 80);
// Test middle.
assertTrue(r.contains(new Coordinate(50, 80)));
// Test edges.
assertTrue(r.contains(new Coordinate(20, 40)));
assertTrue(r.contains(new Coordinate(50, 40)));
assertTrue(r.contains(new Coordinate(80, 40)));
assertTrue(r.contains(new Coordinate(80, 80)));
assertTrue(r.contains(new Coordinate(80, 120)));
assertTrue(r.contains(new Coordinate(50, 120)));
assertTrue(r.contains(new Coordinate(20, 120)));
assertTrue(r.contains(new Coordinate(20, 80)));
// Test outside.
assertFalse(r.contains(new Coordinate(0, 0)));
assertFalse(r.contains(new Coordinate(50, 0)));
assertFalse(r.contains(new Coordinate(100, 0)));
assertFalse(r.contains(new Coordinate(100, 80)));
assertFalse(r.contains(new Coordinate(100, 160)));
assertFalse(r.contains(new Coordinate(50, 160)));
assertFalse(r.contains(new Coordinate(0, 160)));
assertFalse(r.contains(new Coordinate(0, 80)));
},
testGetSize() {
assertObjectEquals(
new Size(60, 80), new GoogRect(20, 40, 60, 80).getSize());
},
testGetBottomRight() {
assertObjectEquals(
new Coordinate(40, 60), new GoogRect(10, 20, 30, 40).getBottomRight());
},
testGetCenter() {
assertObjectEquals(
new Coordinate(25, 40), new GoogRect(10, 20, 30, 40).getCenter());
},
testGetTopLeft() {
assertObjectEquals(
new Coordinate(10, 20), new GoogRect(10, 20, 30, 40).getTopLeft());
},
testRectCeil() {
const rect = new GoogRect(11.4, 26.6, 17.8, 9.2);
assertEquals(
'The function should return the target instance', rect, rect.ceil());
assertRectsEqual(new GoogRect(12, 27, 18, 10), rect);
},
testRectFloor() {
const rect = new GoogRect(11.4, 26.6, 17.8, 9.2);
assertEquals(
'The function should return the target instance', rect, rect.floor());
assertRectsEqual(new GoogRect(11, 26, 17, 9), rect);
},
testRectRound() {
const rect = new GoogRect(11.4, 26.6, 17.8, 9.2);
assertEquals(
'The function should return the target instance', rect, rect.round());
assertRectsEqual(new GoogRect(11, 27, 18, 9), rect);
},
testRectTranslateCoordinate() {
const rect = new GoogRect(10, 40, 30, 20);
const c = new Coordinate(10, 5);
assertEquals(
'The function should return the target instance', rect,
rect.translate(c));
assertRectsEqual(new GoogRect(20, 45, 30, 20), rect);
},
testRectTranslateXY() {
const rect = new GoogRect(10, 20, 40, 35);
assertEquals(
'The function should return the target instance', rect,
rect.translate(15, 10));
assertRectsEqual(new GoogRect(25, 30, 40, 35), rect);
},
testRectTranslateX() {
const rect = new GoogRect(12, 34, 113, 88);
assertEquals(
'The function should return the target instance', rect,
rect.translate(10));
assertRectsEqual(new GoogRect(22, 34, 113, 88), rect);
},
testRectScaleXY() {
const rect = new GoogRect(10, 30, 100, 60);
assertEquals(
'The function should return the target instance', rect,
rect.scale(2, 5));
assertRectsEqual(new GoogRect(20, 150, 200, 300), rect);
},
testRectScaleFactor() {
const rect = new GoogRect(12, 34, 113, 88);
assertEquals(
'The function should return the target instance', rect, rect.scale(10));
assertRectsEqual(new GoogRect(120, 340, 1130, 880), rect);
},
testSquaredDistance() {
const rect = new GoogRect(-10, -20, 15, 25);
// Test regions:
// 1 2 3
// +-+
// 4 |5| 6
// +-+
// 7 8 9
// Region 5 (inside the rectangle).
assertEquals(0, rect.squaredDistance(new Coordinate(-10, 5)));
assertEquals(0, rect.squaredDistance(new Coordinate(5, -20)));
// 1, 2, and 3.
assertEquals(25, rect.squaredDistance(new Coordinate(9, 8)));
assertEquals(36, rect.squaredDistance(new Coordinate(2, 11)));
assertEquals(53, rect.squaredDistance(new Coordinate(12, 7)));
// 4 and 6.
assertEquals(81, rect.squaredDistance(new Coordinate(-19, -10)));
assertEquals(64, rect.squaredDistance(new Coordinate(13, 0)));
// 7, 8, and 9.
assertEquals(20, rect.squaredDistance(new Coordinate(-12, -24)));
assertEquals(9, rect.squaredDistance(new Coordinate(0, -23)));
assertEquals(34, rect.squaredDistance(new Coordinate(8, -25)));
},
testDistance() {
const rect = new GoogRect(2, 4, 8, 16);
// Region 5 (inside the rectangle).
assertEquals(0, rect.distance(new Coordinate(2, 4)));
assertEquals(0, rect.distance(new Coordinate(10, 20)));
// 1, 2, and 3.
assertRoughlyEquals(
Math.sqrt(8), rect.distance(new Coordinate(0, 22)), .0001);
assertEquals(8, rect.distance(new Coordinate(9, 28)));
assertRoughlyEquals(
Math.sqrt(50), rect.distance(new Coordinate(15, 25)), .0001);
// 4 and 6.
assertEquals(7, rect.distance(new Coordinate(-5, 6)));
assertEquals(10, rect.distance(new Coordinate(20, 10)));
// 7, 8, and 9.
assertEquals(5, rect.distance(new Coordinate(-2, 1)));
assertEquals(2, rect.distance(new Coordinate(5, 2)));
assertRoughlyEquals(
Math.sqrt(10), rect.distance(new Coordinate(1, 1)), .0001);
},
});
Codebase Browser
chromium