Android Open Source - android_opengles Cube 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  a va  2s.  co m
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.opengl.GLSurfaceView.Renderer;

public class CubeRenderer implements Renderer {

  private boolean mTranslucentBackground;
  private Cube mCube;
  private float mTransY;
  private float mAngle;

  public CubeRenderer(boolean translucentBackground) {
    mTranslucentBackground = translucentBackground;
    mCube = new Cube();
  }

  @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), -7.0f);
    gl.glRotatef(mAngle, 0.0f, 1.0f, 0.0f);
    gl.glRotatef(mAngle, 1.0f, 0.0f, 0.0f);

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

    mCube.draw(gl);

    mTransY += 0.075f;
    mAngle += 0.4f;
  }

  @Override
  public void onSurfaceChanged(GL10 gl, int width, int height) {
    float ratio = (float) width / (float) height;
    gl.glViewport(0, 0, width, height);
    gl.glMatrixMode(GL10.GL_PROJECTION);
    gl.glLoadIdentity();
    float zNear = .1f;
    float zFar = 1000;
    float fieldOfView = 30.0f / 57.3f;
    float size = zNear * (float) Math.tan(fieldOfView / 2.0f);
    gl.glFrustumf(-size, size, -size / ratio, size / ratio, zNear, zFar);
  }

  @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(0.0f, 0.5f, 0.5f, 1.0f);
    }
    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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