Android Open Source - android_opengles Square Renderer

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License

The source code is released under:

MIT License

Java Source Code

package com.example.opengles;
/* w w  w. j  av a 2 s  . c  o m*/
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.opengl.GLSurfaceView.Renderer;

public class SquareRenderer implements Renderer {

  private boolean mTranslucentBackground;
  private Square mSquare;
  private float mTransY;
  private float mAngle;

  public SquareRenderer(boolean translucentBackground) {
    mTranslucentBackground = translucentBackground;
    mSquare = new Square();
  }

  @Override
  public void onDrawFrame(GL10 gl) {
    gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);

    gl.glMatrixMode(GL10.GL_MODELVIEW);
    gl.glLoadIdentity();
    gl.glTranslatef(0.0f, (float) Math.sin(mTransY), -3.0f);

    gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
    gl.glEnableClientState(GL10.GL_COLOR_ARRAY);

    mSquare.draw(gl);

    mTransY += 0.075f;
  }

  @Override
  public void onSurfaceChanged(GL10 gl, int width, int height) {
    float ratio = (float) width / height;
    gl.glViewport(0, 0, width, height);
    gl.glMatrixMode(GL10.GL_PROJECTION);
    gl.glLoadIdentity();
    gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10);
  }

  @Override
  public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    gl.glDisable(GL10.GL_DITHER);
    gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST);
    if (mTranslucentBackground) {
      gl.glClearColor(0, 0, 0, 0);
    } else {
      gl.glClearColor(1, 1, 1, 1);
    }
    gl.glEnable(GL10.GL_CULL_FACE);
    gl.glShadeModel(GL10.GL_SMOOTH);
    gl.glEnable(GL10.GL_DEPTH_TEST);
  }

}

Java Source Code List

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