| // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// @assertion Rectangle.fromPoints(Point<T> a, Point<T> b) |
| /// Create a rectangle spanned by the points a and b. |
| /// @description Checks that coordinate properties of the created object |
| /// are equal to the constructor arguments. |
| /// @author kaigorodov |
| |
| import "dart:math"; |
| import "../../../Utils/expect.dart"; |
| |
| const List<num> values = const [ |
| 0, -1, 1, 10, -10, 100, -100, |
| -1.7976931348623157e150, -3.273390607896142E15, -4.503599627370497E15, |
| -4.503599627370496E15, -4.5035996273704955E15, -4.294967296000001E9, |
| -4.294967296E9, -4.2949672959999995E9, -6031769.5, -101.0, |
| -100.00000000000001, -100.0, -99.99999999999999, -99.0, -10.0, |
| -1.0000000000000002, -1.0, -.9999999999999999, -.7, -2.2250738585072014e-150, |
| -4.9406564584124654e-150, .0, 4.9406564584124654e-150, |
| 2.2250738585072014e-150, .7, .9999999999999999, 1.0, 1.0000000000000002, |
| 10.0, 99.0, 99.99999999999999, 100.0, 100.00000000000001, 101.0, 6031769.5, |
| 4.2949672959999995E9, 4.294967296E9, 4.294967296000001E9, |
| 4.5035996273704955E15, 4.503599627370496E15, 4.503599627370497E15, |
| 3.273390607896142E10, 1.7976931348623157e150 |
| ]; |
| |
| Random rand = new Random(123456); |
| |
| num randomVal() { |
| int k = rand.nextInt(values.length); |
| return values[k]; |
| } |
| |
| void check(Point p1, Point p2) { |
| Rectangle r = new Rectangle.fromPoints(p1, p2); |
| Expect.equals(min(p1.x, p2.x), r.left); |
| Expect.equals(min(p1.y, p2.y), r.top); |
| Expect.equals((p2.x - p1.x).abs(), r.width); |
| Expect.equals((p2.y - p1.y).abs(), r.height); |
| } |
| |
| main() { |
| for (int i = 0; i < 1000; i++) { |
| num x = randomVal(); |
| num y = randomVal(); |
| num z = randomVal(); |
| num w = randomVal(); |
| check(new Point(x, y), new Point(z, w)); |
| } |
| } |