| // Copyright (c) 2015, Google Inc. 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. |
| |
| import 'dart:typed_data'; |
| |
| import 'package:test/test.dart'; |
| |
| import 'package:vector_math/vector_math.dart'; |
| import 'package:vector_math/vector_math_lists.dart'; |
| |
| import 'test_utils.dart'; |
| |
| void testVector2ListWithOffset() { |
| final list = Vector2List(10, 1); |
| list[0] = Vector2(1.0, 2.0); |
| relativeTest(list[0].x, 1.0); |
| relativeTest(list[0].y, 2.0); |
| relativeTest(list.buffer[0], 0.0); // unset |
| relativeTest(list.buffer[1], 1.0); |
| relativeTest(list.buffer[2], 2.0); |
| relativeTest(list.buffer[3], 0.0); // unset |
| } |
| |
| void testVector2ListView() { |
| final buffer = Float32List(8); |
| final list = Vector2List.view(buffer, 1, 3); |
| // The list length should be (8 - 1) ~/ 3 == 2. |
| expect(list.length, 2); |
| list[0] = Vector2(1.0, 2.0); |
| list[1] = Vector2(3.0, 4.0); |
| expect(buffer[0], 0.0); |
| expect(buffer[1], 1.0); |
| expect(buffer[2], 2.0); |
| expect(buffer[3], 0.0); |
| expect(buffer[4], 3.0); |
| expect(buffer[5], 4.0); |
| expect(buffer[6], 0.0); |
| expect(buffer[7], 0.0); |
| } |
| |
| void testVector2ListViewTightFit() { |
| final buffer = Float32List(8); |
| final list = Vector2List.view(buffer, 2, 4); |
| // The list length should be (8 - 2) ~/ 2 == 2 as the stride of the last |
| // element is negligible. |
| expect(list.length, 2); |
| list[0] = Vector2(1.0, 2.0); |
| list[1] = Vector2(3.0, 4.0); |
| expect(buffer[0], 0.0); |
| expect(buffer[1], 0.0); |
| expect(buffer[2], 1.0); |
| expect(buffer[3], 2.0); |
| expect(buffer[4], 0.0); |
| expect(buffer[5], 0.0); |
| expect(buffer[6], 3.0); |
| expect(buffer[7], 4.0); |
| } |
| |
| void testVector2ListFromList() { |
| final input = [ |
| Vector2(1.0, 2.0), |
| Vector2(3.0, 4.0), |
| Vector2(5.0, 6.0), |
| ]; |
| final list = Vector2List.fromList(input, 2, 5); |
| expect(list.buffer.length, 17); |
| expect(list.buffer[0], 0.0); |
| expect(list.buffer[1], 0.0); |
| expect(list.buffer[2], 1.0); |
| expect(list.buffer[3], 2.0); |
| expect(list.buffer[4], 0.0); |
| expect(list.buffer[5], 0.0); |
| expect(list.buffer[6], 0.0); |
| expect(list.buffer[7], 3.0); |
| expect(list.buffer[8], 4.0); |
| expect(list.buffer[9], 0.0); |
| expect(list.buffer[10], 0.0); |
| expect(list.buffer[11], 0.0); |
| expect(list.buffer[12], 5.0); |
| expect(list.buffer[13], 6.0); |
| expect(list.buffer[14], 0.0); |
| expect(list.buffer[15], 0.0); |
| expect(list.buffer[16], 0.0); |
| } |
| |
| void testVector2ListSetValue() { |
| final list = Vector2List(2); |
| |
| list.setValues(1, 1.0, 2.0); |
| |
| expect(list.buffer[0], 0.0); |
| expect(list.buffer[1], 0.0); |
| expect(list.buffer[2], 1.0); |
| expect(list.buffer[3], 2.0); |
| } |
| |
| void testVector2ListSetZero() { |
| final list = Vector2List.view(Float32List.fromList([1.0, 2.0, 3.0, 4.0])); |
| |
| list.setZero(1); |
| |
| expect(list.buffer[0], 1.0); |
| expect(list.buffer[1], 2.0); |
| expect(list.buffer[2], 0.0); |
| expect(list.buffer[3], 0.0); |
| } |
| |
| void testVector2ListAdd() { |
| final list = Vector2List.view(Float32List.fromList([1.0, 2.0, 3.0, 4.0])); |
| |
| list.add(1, $v2(2.0, 2.0)); |
| |
| expect(list.buffer[0], 1.0); |
| expect(list.buffer[1], 2.0); |
| expect(list.buffer[2], 5.0); |
| expect(list.buffer[3], 6.0); |
| } |
| |
| void testVector2ListAddScaled() { |
| final list = Vector2List.view(Float32List.fromList([1.0, 2.0, 3.0, 4.0])); |
| |
| list.addScaled(1, $v2(2.0, 2.0), 2.0); |
| |
| expect(list.buffer[0], 1.0); |
| expect(list.buffer[1], 2.0); |
| expect(list.buffer[2], 7.0); |
| expect(list.buffer[3], 8.0); |
| } |
| |
| void testVector2ListSub() { |
| final list = Vector2List.view(Float32List.fromList([1.0, 2.0, 3.0, 4.0])); |
| |
| list.sub(1, $v2(2.0, 2.0)); |
| |
| expect(list.buffer[0], 1.0); |
| expect(list.buffer[1], 2.0); |
| expect(list.buffer[2], 1.0); |
| expect(list.buffer[3], 2.0); |
| } |
| |
| void testVector2ListMultiply() { |
| final list = Vector2List.view(Float32List.fromList([1.0, 2.0, 3.0, 4.0])); |
| |
| list.multiply(1, $v2(2.0, 3.0)); |
| |
| expect(list.buffer[0], 1.0); |
| expect(list.buffer[1], 2.0); |
| expect(list.buffer[2], 6.0); |
| expect(list.buffer[3], 12.0); |
| } |
| |
| void testVector2ListScale() { |
| final list = Vector2List.view(Float32List.fromList([1.0, 2.0, 3.0, 4.0])); |
| |
| list.scale(1, 2.0); |
| |
| expect(list.buffer[0], 1.0); |
| expect(list.buffer[1], 2.0); |
| expect(list.buffer[2], 6.0); |
| expect(list.buffer[3], 8.0); |
| } |
| |
| void main() { |
| group('Vector2List', () { |
| test('with offset', testVector2ListWithOffset); |
| test('view', testVector2ListView); |
| test('view tight fit', testVector2ListViewTightFit); |
| test('fromList', testVector2ListFromList); |
| test('setValue', testVector2ListSetValue); |
| test('setZero', testVector2ListSetZero); |
| test('add', testVector2ListAdd); |
| test('addScaled', testVector2ListAddScaled); |
| test('sub', testVector2ListSub); |
| test('multiply', testVector2ListMultiply); |
| test('scale', testVector2ListScale); |
| }); |
| } |