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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* Copyright (C) 2010 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.
*/
#ifndef ANDROID_HWUI_VECTOR_H
#define ANDROID_HWUI_VECTOR_H
namespace android {
namespace uirenderer {
///////////////////////////////////////////////////////////////////////////////
// Classes
///////////////////////////////////////////////////////////////////////////////
struct Vector2 {
float x;
float y;
Vector2() :
x(0.0f), y(0.0f) {
}
Vector2(float px, float py) :
x(px), y(py) {
}
float length() const {
return sqrt(x * x + y * y);
}
void operator+=(const Vector2& v) {
x += v.x;
y += v.y;
}
void operator-=(const Vector2& v) {
x -= v.x;
y -= v.y;
}
void operator+=(const float v) {
x += v;
y += v;
}
void operator-=(const float v) {
x -= v;
y -= v;
}
void operator/=(float s) {
x /= s;
y /= s;
}
void operator*=(float s) {
x *= s;
y *= s;
}
Vector2 operator+(const Vector2& v) const {
return Vector2(x + v.x, y + v.y);
}
Vector2 operator-(const Vector2& v) const {
return Vector2(x - v.x, y - v.y);
}
Vector2 operator/(float s) const {
return Vector2(x / s, y / s);
}
Vector2 operator*(float s) const {
return Vector2(x * s, y * s);
}
void normalize() {
float s = 1.0f / length();
x *= s;
y *= s;
}
Vector2 copyNormalized() const {
Vector2 v(x, y);
v.normalize();
return v;
}
float dot(const Vector2& v) const {
return x * v.x + y * v.y;
}
void dump() {
LOGD("Vector2[%.2f, %.2f]", x, y);
}
}; // class Vector2
///////////////////////////////////////////////////////////////////////////////
// Types
///////////////////////////////////////////////////////////////////////////////
typedef Vector2 vec2;
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_HWUI_VECTOR_H
|