1 /* 2 * Copyright (C) 2015 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 17 package com.android.incallui.answer.impl.classifier; 18 19 /** 20 * A classifier which looks at the ratio between the total length covered by the stroke and the 21 * distance between the first and last point from this stroke. 22 */ 23 class EndPointRatioClassifier extends StrokeClassifier { 24 public EndPointRatioClassifier(ClassifierData classifierData) { 25 mClassifierData = classifierData; 26 } 27 28 @Override 29 public String getTag() { 30 return "END_RTIO"; 31 } 32 33 @Override 34 public float getFalseTouchEvaluation(Stroke stroke) { 35 float ratio; 36 if (stroke.getTotalLength() == 0.0f) { 37 ratio = 1.0f; 38 } else { 39 ratio = stroke.getEndPointLength() / stroke.getTotalLength(); 40 } 41 return EndPointRatioEvaluator.evaluate(ratio); 42 } 43 } 44
