Vertex.h revision 65cd612face362d054a85d0f7e5881c59cd523be
1/*
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_VERTEX_H
18#define ANDROID_HWUI_VERTEX_H
19
20namespace android {
21namespace uirenderer {
22
23/**
24 * Simple structure to describe a vertex with a position and a texture.
25 */
26struct Vertex {
27    float position[2];
28
29    static inline void set(Vertex* vertex, float x, float y) {
30        vertex[0].position[0] = x;
31        vertex[0].position[1] = y;
32    }
33}; // struct Vertex
34
35/**
36 * Simple structure to describe a vertex with a position and a texture.
37 */
38struct TextureVertex {
39    float position[2];
40    float texture[2];
41
42    static inline void set(TextureVertex* vertex, float x, float y, float u, float v) {
43        vertex[0].position[0] = x;
44        vertex[0].position[1] = y;
45        vertex[0].texture[0] = u;
46        vertex[0].texture[1] = v;
47    }
48
49    static inline void setUV(TextureVertex* vertex, float u, float v) {
50        vertex[0].texture[0] = u;
51        vertex[0].texture[1] = v;
52    }
53}; // struct TextureVertex
54
55/**
56 * Simple structure to describe a vertex with a position and an alpha value.
57 */
58struct AlphaVertex : Vertex {
59    float alpha;
60
61    static inline void set(AlphaVertex* vertex, float x, float y, float alpha) {
62        Vertex::set(vertex, x, y);
63        vertex[0].alpha = alpha;
64    }
65
66    static inline void setColor(AlphaVertex* vertex, float alpha) {
67        vertex[0].alpha = alpha;
68    }
69}; // struct AlphaVertex
70
71}; // namespace uirenderer
72}; // namespace android
73
74#endif // ANDROID_HWUI_VERTEX_H
75