1 /*
2  * Copyright (C) 2016 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 package com.android.devcamera;
17 
18 import android.graphics.PointF;
19 import android.graphics.RectF;
20 import android.hardware.camera2.params.Face;
21 
22 /**
23  *
24  * Face coordinates.  Normalized 0 to 1, and in native sensor orientation, which so far seems to be
25  * landscape.
26  *
27  */
28 public class NormalizedFace {
29     public RectF bounds;
30     public PointF leftEye;
31     public PointF rightEye;
32     public PointF mouth;
33 
NormalizedFace(Face face, int dX, int dY, int offX, int offY)34     public NormalizedFace(Face face, int dX, int dY, int offX, int offY) {
35         if (face.getLeftEyePosition() != null) {
36             leftEye = new PointF();
37             leftEye.x = (float) (face.getLeftEyePosition().x - offX) / dX;
38             leftEye.y = (float) (face.getLeftEyePosition().y - offY) / dY;
39         }
40         if (face.getRightEyePosition() != null) {
41             rightEye = new PointF();
42             rightEye.x = (float) (face.getRightEyePosition().x - offX) / dX;
43             rightEye.y = (float) (face.getRightEyePosition().y - offY) / dY;
44         }
45         if (face.getMouthPosition() != null) {
46             mouth = new PointF();
47             mouth.x = (float) (face.getMouthPosition().x - offX) / dX;
48             mouth.y = (float) (face.getMouthPosition().y - offY) / dY;
49         }
50         if (face.getBounds() != null) {
51             bounds = new RectF();
52             bounds.left = (float) (face.getBounds().left - offX) / dX;
53             bounds.top = (float) (face.getBounds().top - offY) / dY;
54             bounds.right = (float) (face.getBounds().right - offX) / dX;
55             bounds.bottom = (float) (face.getBounds().bottom - offY) / dY;
56         }
57     }
58 
mirrorInX()59     public void mirrorInX() {
60         if (leftEye != null) {
61             leftEye.x = 1f - leftEye.x;
62         }
63         if (rightEye != null) {
64             rightEye.x = 1f - rightEye.x;
65         }
66         if (mouth != null) {
67             mouth.x = 1f - mouth.x;
68         }
69         float oldLeft = bounds.left;
70         bounds.left = 1f - bounds.right;
71         bounds.right = 1f - oldLeft;
72     }
73 
74     /**
75      * Typically required for front camera
76      */
mirrorInY()77     public void mirrorInY() {
78         if (leftEye != null) {
79             leftEye.y = 1f - leftEye.y;
80         }
81         if (rightEye != null) {
82             rightEye.y = 1f - rightEye.y;
83         }
84         if (mouth != null) {
85             mouth.y = 1f - mouth.y;
86         }
87         float oldTop = bounds.top;
88         bounds.top = 1f - bounds.bottom;
89         bounds.bottom = 1f - oldTop;
90     }
91 }
92