| /* |
| * Copyright (C) 2015 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 com.android.incallui.answer.impl.classifier; |
| |
| /** |
| * A classifier which looks at the ratio between the length of the stroke and its number of points. |
| * The number of points is subtracted by 2 because the UP event comes in with some delay and it |
| * should not influence the ratio and also strokes which are long and have a small number of points |
| * are punished more (these kind of strokes are usually bad ones and they tend to score well in |
| * other classifiers). |
| */ |
| class LengthCountClassifier extends StrokeClassifier { |
| public LengthCountClassifier(ClassifierData classifierData) {} |
| |
| @Override |
| public String getTag() { |
| return "LEN_CNT"; |
| } |
| |
| @Override |
| public float getFalseTouchEvaluation(Stroke stroke) { |
| return LengthCountEvaluator.evaluate( |
| stroke.getTotalLength() / Math.max(1.0f, stroke.getCount() - 2)); |
| } |
| } |