三角形模

1.0f, 0.0f, 0.0f, 1.0f, //设置颜色为红色
0.0f, 1.0f, 0.0f, 1.0f, //设置颜色为绿色
0.0f, 0.0f, 1.0f, 1.0f //设置颜色为蓝色
};
/**
* 构造方法，实例化vertexBuffer对象
//关闭顶点绘制状态
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
//关闭颜色绘制状态
gl.glDisableClientState(GL10.GL_COLOR_ARRAY);
}
}
private float vertices[] = {
0.0f, 1.0f, 0.0f, //Top
-1.0f, -1.0f, 0.0f, //Bottom Left
1.0f, -1.0f, 0.0f //Bottom Right
};
private float colors[] = {
public class Triangle {
/** 定点坐标值 */
private FloatBuffer vertexBuffer;
/** The buffer holding the colors */
private FloatBuffer colorBuffer;
/** 初始化定点坐标 */
*/
public Triangle() {
//
ByteBuffer byteBuf = ByteBuffer.allocateDirect(vertices.length * 4);
byteBuf.order(ByteOrder.nativeOrder());
vertexBuffer = byteBuf.asFloatBuffer();
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
//启用颜色绘制状态
gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
//绘制三角形
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, vertices.length / 3);
colorBuffer = byteBuf.asFloatBuffer();
colorBuffer.pu
}
/**
*自定义的绘制三角形方法
*/
public void draw(GL10 gl) {
//指定要绘制的顶点
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);
//指定要绘制的颜色
gl.glColorPointer(4, GL10.GL_FLOAT, 0, colorBuffer);
//开启顶点绘制状态
vertexBuffer.put(vertices);
vertexBuffer.position(0);
byteBuf = ByteBuffer.allocateDirect(colors.length * 4);
byteBuf.order(ByteOrder.nativeOrder());