package com.example.opengldemo;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.opengl.GLSurfaceView.Renderer;
import android.opengl.GLU;
public class OpenGLRenderer implements Renderer {
private Cube mCube = new Cube();
private float mCubeRotation;
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
gl.glClearDepthf(1.0f);
gl.glEnable(GL10.GL_DEPTH_TEST);
gl.glDepthFunc(GL10.GL_LEQUAL);
gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT,
GL10.GL_NICEST);
}
@Override
public void onDrawFrame(GL10 gl) {
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
gl.glLoadIdentity();
gl.glTranslatef(0.0f, 0.0f, -10.0f);
gl.glRotatef(mCubeRotation, 1.0f, 1.0f, 1.0f);
mCube.draw(gl);
gl.glLoadIdentity();
mCubeRotation -= 0.15f;
}
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
GLU.gluPerspective(gl, 45.0f, (float)width / (float)height, 0.1f, 100.0f);
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
}
}