blob: 46dded5ade193341a4a239ae981249acd247d418 [file] [log] [blame]
Romain Guya957eea2010-12-08 18:34:42 -08001/*
2 * Copyright (C) 2010 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#ifndef ANDROID_HWUI_VECTOR_H
18#define ANDROID_HWUI_VECTOR_H
19
20namespace android {
21namespace uirenderer {
22
23///////////////////////////////////////////////////////////////////////////////
24// Classes
25///////////////////////////////////////////////////////////////////////////////
26
27struct Vector2 {
28 float x;
29 float y;
30
31 Vector2() :
32 x(0.0f), y(0.0f) {
33 }
34
35 Vector2(float px, float py) :
36 x(px), y(py) {
37 }
38
39 float length() const {
40 return sqrt(x * x + y * y);
41 }
42
43 void operator+=(const Vector2& v) {
44 x += v.x;
45 y += v.y;
46 }
47
48 void operator-=(const Vector2& v) {
49 x -= v.x;
50 y -= v.y;
51 }
52
53 void operator+=(const float v) {
54 x += v;
55 y += v;
56 }
57
58 void operator-=(const float v) {
59 x -= v;
60 y -= v;
61 }
62
63 void operator/=(float s) {
64 x /= s;
65 y /= s;
66 }
67
68 void operator*=(float s) {
69 x *= s;
70 y *= s;
71 }
72
73 Vector2 operator+(const Vector2& v) const {
74 return Vector2(x + v.x, y + v.y);
75 }
76
77 Vector2 operator-(const Vector2& v) const {
78 return Vector2(x - v.x, y - v.y);
79 }
80
81 Vector2 operator/(float s) const {
82 return Vector2(x / s, y / s);
83 }
84
85 Vector2 operator*(float s) const {
86 return Vector2(x * s, y * s);
87 }
88
89 void normalize() {
90 float s = 1.0f / length();
91 x *= s;
92 y *= s;
93 }
94
95 Vector2 copyNormalized() const {
96 Vector2 v(x, y);
97 v.normalize();
98 return v;
99 }
100
101 float dot(const Vector2& v) const {
102 return x * v.x + y * v.y;
103 }
104
105 void dump() {
106 LOGD("Vector2[%.2f, %.2f]", x, y);
107 }
108}; // class Vector2
109
110///////////////////////////////////////////////////////////////////////////////
111// Types
112///////////////////////////////////////////////////////////////////////////////
113
114typedef Vector2 vec2;
115
116}; // namespace uirenderer
117}; // namespace android
118
119#endif // ANDROID_HWUI_VECTOR_H