| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.graphics; |
| |
| import java.util.Arrays; |
| |
| import junit.framework.TestCase; |
| |
| /** |
| * |
| */ |
| public class Matrix_DelegateTest extends TestCase { |
| |
| public void testIdentity() { |
| Matrix m1 = new Matrix(); |
| |
| assertTrue(m1.isIdentity()); |
| |
| m1.setValues(new float[]{1, 0, 0, 0, 1, 0, 0, 0, 1}); |
| assertTrue(m1.isIdentity()); |
| } |
| |
| public void testCopyConstructor() { |
| Matrix m1 = new Matrix(); |
| Matrix m2 = new Matrix(m1); |
| |
| float[] v1 = new float[9]; |
| float[] v2 = new float[9]; |
| m1.getValues(v1); |
| m2.getValues(v2); |
| |
| for (int i = 0; i < 9; i++) { |
| assertEquals(v1[i], v2[i]); |
| } |
| } |
| |
| public void testInvert() { |
| Matrix m1 = new Matrix(); |
| Matrix inverse = new Matrix(); |
| m1.setValues(new float[]{1, 2, 3, 4, 5, 6, 7, 8, 9}); |
| m1.invert(inverse); |
| |
| float[] values = new float[9]; |
| inverse.getValues(values); |
| |
| assertTrue(Arrays.equals(values, |
| new float[]{-1.6666666f, 0.6666667f, 1.0f, 1.3333334f, -0.33333334f, -2.0f, 0.0f, |
| 0.0f, 1.0f})); |
| } |
| } |