Blazej Magnowski | 68d0c9b | 2015-09-18 17:25:55 -0700 | [diff] [blame] | 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.systemui.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 | public class EndPointRatioClassifier extends StrokeClassifier { |
| 24 | public EndPointRatioClassifier(ClassifierData classifierData) { |
| 25 | mClassifierData = classifierData; |
| 26 | } |
| 27 | |
| 28 | @Override |
| 29 | public float getFalseTouchEvaluation(int type, Stroke stroke) { |
Blazej Magnowski | 52af6b6 | 2015-09-30 15:46:17 -0700 | [diff] [blame] | 30 | float ratio; |
Blazej Magnowski | 68d0c9b | 2015-09-18 17:25:55 -0700 | [diff] [blame] | 31 | if (stroke.getTotalLength() == 0.0f) { |
Blazej Magnowski | 52af6b6 | 2015-09-30 15:46:17 -0700 | [diff] [blame] | 32 | ratio = 1.0f; |
| 33 | } else { |
| 34 | ratio = stroke.getEndPointLength() / stroke.getTotalLength(); |
Blazej Magnowski | 68d0c9b | 2015-09-18 17:25:55 -0700 | [diff] [blame] | 35 | } |
Blazej Magnowski | 52af6b6 | 2015-09-30 15:46:17 -0700 | [diff] [blame] | 36 | return EndPointRatioEvaluator.evaluate(ratio); |
Blazej Magnowski | 68d0c9b | 2015-09-18 17:25:55 -0700 | [diff] [blame] | 37 | } |
| 38 | } |