Android Open Source - opengl Square Renderer

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License

The source code is released under:

Apache License

Java Source Code

package edu.cs4730.OpenGlDemo1;
import javax.microedition.khronos.egl.EGL10; //1
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.opengl.GLSurfaceView; //2
import java.lang.Math;
//ww w  .  j  a va 2  s .  co m
public class SquareRenderer implements GLSurfaceView.Renderer {
  private boolean mTranslucentBackground;
  private Square mSquare;
  private float mTransY;
  private float mAngle;

  public SquareRenderer(boolean useTranslucentBackground)  {
    mTranslucentBackground = useTranslucentBackground;
    mSquare = new Square(); //3
  }
  
  public void onDrawFrame(GL10 gl) {//4
    gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);//5
    gl.glMatrixMode(GL10.GL_MODELVIEW); //6
    gl.glLoadIdentity(); //7
    gl.glTranslatef(0.0f,(float)Math.sin(mTransY), -3.0f); //8
    gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); //9
    gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
    mSquare.draw(gl); //10
    mTransY += .075f;
  }
  
  public void onSurfaceChanged(GL10 gl, int width, int height) {//11
    gl.glViewport(0, 0, width, height); //12
    float ratio = (float) width / height;
    gl.glMatrixMode(GL10.GL_PROJECTION); //13
    gl.glLoadIdentity();
    gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10); //14
  }
  
  public void onSurfaceCreated(GL10 gl, EGLConfig config) {//15
    gl.glDisable(GL10.GL_DITHER); //16
    gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, //17
        GL10.GL_FASTEST);
    if (mTranslucentBackground) {//18
      gl.glClearColor(0,0,0,0);
    } else {
      gl.glClearColor(1,1,1,1);
    }
    gl.glEnable(GL10.GL_CULL_FACE); //19
    gl.glShadeModel(GL10.GL_SMOOTH); //20
    gl.glEnable(GL10.GL_DEPTH_TEST); //21
  }

}

Java Source Code List

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