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      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 
     20 namespace android {
     21 namespace uirenderer {
     22 
     23 /**
     24  * Simple structure to describe a vertex with a position and a texture.
     25  */
     26 struct 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  */
     38 struct 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  */
     58 struct 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 /**
     72  * Simple structure to describe a vertex with a position and an alpha value.
     73  */
     74 struct AAVertex : Vertex {
     75     float width;
     76     float length;
     77 
     78     static inline void set(AAVertex* vertex, float x, float y, float width, float length) {
     79         Vertex::set(vertex, x, y);
     80         vertex[0].width = width;
     81         vertex[0].length = length;
     82     }
     83 
     84     static inline void setColor(AAVertex* vertex, float width, float length) {
     85         vertex[0].width = width;
     86         vertex[0].length = length;
     87     }
     88 }; // struct AlphaVertex
     89 
     90 }; // namespace uirenderer
     91 }; // namespace android
     92 
     93 #endif // ANDROID_HWUI_VERTEX_H
     94