blob: 5e2729684fbb7229cc71827dc048b18b1e23c45d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/*
* Copyright (C) 2008 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.example.android.apis.graphics.kube;
public class Layer {
public Layer(int axis) {
// start with identity matrix for transformation
mAxis = axis;
mTransform.setIdentity();
}
public void startAnimation() {
for (int i = 0; i < mShapes.length; i++) {
GLShape shape = mShapes[i];
if (shape != null) {
shape.startAnimation();
}
}
}
public void endAnimation() {
for (int i = 0; i < mShapes.length; i++) {
GLShape shape = mShapes[i];
if (shape != null) {
shape.endAnimation();
}
}
}
public void setAngle(float angle) {
// normalize the angle
float twopi = (float)Math.PI *2f;
while (angle >= twopi) angle -= twopi;
while (angle < 0f) angle += twopi;
// mAngle = angle;
float sin = (float)Math.sin(angle);
float cos = (float)Math.cos(angle);
float[][] m = mTransform.m;
switch (mAxis) {
case kAxisX:
m[1][1] = cos;
m[1][2] = sin;
m[2][1] = -sin;
m[2][2] = cos;
m[0][0] = 1f;
m[0][1] = m[0][2] = m[1][0] = m[2][0] = 0f;
break;
case kAxisY:
m[0][0] = cos;
m[0][2] = sin;
m[2][0] = -sin;
m[2][2] = cos;
m[1][1] = 1f;
m[0][1] = m[1][0] = m[1][2] = m[2][1] = 0f;
break;
case kAxisZ:
m[0][0] = cos;
m[0][1] = sin;
m[1][0] = -sin;
m[1][1] = cos;
m[2][2] = 1f;
m[2][0] = m[2][1] = m[0][2] = m[1][2] = 0f;
break;
}
for (int i = 0; i < mShapes.length; i++) {
GLShape shape = mShapes[i];
if (shape != null) {
shape.animateTransform(mTransform);
}
}
}
GLShape[] mShapes = new GLShape[9];
M4 mTransform = new M4();
// float mAngle;
// which axis do we rotate around?
// 0 for X, 1 for Y, 2 for Z
int mAxis;
static public final int kAxisX = 0;
static public final int kAxisY = 1;
static public final int kAxisZ = 2;
}
|
