1/* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.support.transition; 18 19import static org.junit.Assert.assertEquals; 20import static org.junit.Assert.assertFalse; 21 22import android.graphics.Path; 23import android.graphics.PathMeasure; 24 25public abstract class PathMotionTest { 26 27 public static void assertPathMatches(Path expectedPath, Path path) { 28 PathMeasure expectedMeasure = new PathMeasure(expectedPath, false); 29 PathMeasure pathMeasure = new PathMeasure(path, false); 30 31 boolean expectedNextContour; 32 boolean pathNextContour; 33 int contourIndex = 0; 34 do { 35 float expectedLength = expectedMeasure.getLength(); 36 assertEquals("Lengths differ", expectedLength, pathMeasure.getLength(), 0.01f); 37 38 float minLength = Math.min(expectedLength, pathMeasure.getLength()); 39 40 float[] pos = new float[2]; 41 42 float increment = minLength / 5f; 43 for (float along = 0; along <= minLength; along += increment) { 44 expectedMeasure.getPosTan(along, pos, null); 45 float expectedX = pos[0]; 46 float expectedY = pos[1]; 47 48 pathMeasure.getPosTan(along, pos, null); 49 assertEquals("Failed at " + increment + " in contour " + contourIndex, 50 expectedX, pos[0], 0.01f); 51 assertEquals("Failed at " + increment + " in contour " + contourIndex, 52 expectedY, pos[1], 0.01f); 53 } 54 expectedNextContour = expectedMeasure.nextContour(); 55 pathNextContour = pathMeasure.nextContour(); 56 contourIndex++; 57 } while (expectedNextContour && pathNextContour); 58 assertFalse(expectedNextContour); 59 assertFalse(pathNextContour); 60 } 61 62} 63