GLSprite.java :  » Graphics-3D-2D-OpenGL » android-2d-engine » org » gs » components » graphics » Android Open Source

/*
 * Copyright (C) 2009 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 org.gs.components.graphics;

import javax.microedition.khronos.opengles.GL10;
import javax.microedition.khronos.opengles.GL11Ext;

/**
 * This is the OpenGL ES version of a sprite.  It is more complicated than the
 * CanvasSprite class because it can be used in more than one way.  This class
 * can draw using a grid of verts, a grid of verts stored in VBO objects, or
 * using the DrawTexture extension.
 */
public class GLSprite extends Renderable {
    // The OpenGL ES texture handle to draw.
    private int mTextureName;
    // The id of the original resource that mTextureName is based on.
    private int mResourceId;
    // If drawing with verts or VBO verts, the grid object defining those verts.
    private Grid mGrid;
    
    public GLSprite(int resourceId) {
        super();
        mResourceId = resourceId;
    }
    
    public void setTextureName(int name) {
        mTextureName = name;
    }
    
    public int getTextureName() {
        return mTextureName;
    }
    
    public void setResourceId(int id) {
        mResourceId = id;
    }
    
    public int getResourceId() {
        return mResourceId;
    }
    
    public void setGrid(Grid grid) {
        mGrid = grid;
    }
    
    public Grid getGrid() {
        return mGrid;
    }
    
    public void draw(GL10 gl) {
        gl.glBindTexture(GL10.GL_TEXTURE_2D, mTextureName);

        if (mGrid == null) {
            // Draw using the DrawTexture extension.
            ((GL11Ext) gl).glDrawTexfOES(x, y, z, width, height);
        } else {
            // Draw using verts or VBO verts.
            gl.glPushMatrix();
            gl.glLoadIdentity();
            gl.glTranslatef(
                    x, 
                    y, 
                    z);
            
            mGrid.draw(gl, true, false);
            
            gl.glPopMatrix();
        }
    }
}