Android Open Source - ScalAR Renderer

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
  Copyright (C) 2010  Tobias Domhan/* www .  j  a  v  a 2s. c  o m*/

    This file is part of AndObjViewer.

    AndObjViewer is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    AndObjViewer is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with AndObjViewer.  If not, see <http://www.gnu.org/licenses/>.
 
 */
package edu.dhbw.andobjviewer.graphics;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.Vector;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import edu.dhbw.andobjviewer.AugmentedModelViewerActivity;
import edu.dhbw.andobjviewer.models.Vector3D;
import edu.dhbw.andobjviewer.util.MemUtil;


import android.opengl.GLSurfaceView;
import android.opengl.GLU;
import android.util.Log;

/**
 * cares about 3d rendering of the scene
 * @author tobi
 *
 */
public class Renderer implements GLSurfaceView.Renderer {
  
  private final Vector<Model3D> models;
  private final Vector3D cameraPosition = new Vector3D(0, 3, 50);
  
  // FPS stuff
  long frame=0,time,timebase=0;
  //end FPS stuff
  
  public Renderer(Vector<Model3D> models) {
    this.models = models;
  }
  
  public void addModel(Model3D model) {
    if(!models.contains(model)) {
      models.add(model);
    }
  }
  
  @Override
  public void onDrawFrame(GL10 gl) {
    if(AugmentedModelViewerActivity.DEBUG) {
      frame++;
      time=System.currentTimeMillis();
      if (time - timebase > 1000) {
        Log.d("fps: ", String.valueOf(frame*1000.0f/(time-timebase)));
         timebase = time;    
        frame = 0;
      }
    }
    //String extensions = gl.glGetString(GL10.GL_EXTENSIONS);
    gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
    gl.glLoadIdentity();
    GLU.gluLookAt(gl, cameraPosition.x, cameraPosition.y, cameraPosition.z,
        0, 0, 0, 0, 1, 0);
    for (Iterator<Model3D> iterator = models.iterator(); iterator.hasNext();) {
      Model3D model = iterator.next();
      model.draw(gl);
    }
  }

  @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)/height, 0.11f, 100f);
        gl.glMatrixMode(GL10.GL_MODELVIEW);
        gl.glLoadIdentity();        
  }

  @Override
  public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    gl.glClearColor(1,1,1,1);
    
    gl.glClearDepthf(1.0f);
    gl.glEnable(GL10.GL_DEPTH_TEST);
    gl.glDepthFunc(GL10.GL_LEQUAL);
    
    gl.glEnable(GL10.GL_TEXTURE_2D);
    //gl.glEnable(GL10.GL_CULL_FACE);
    
    //lighting stuff
    gl.glShadeModel(GL10.GL_SMOOTH);
    gl.glDisable(GL10.GL_COLOR_MATERIAL);
    gl.glEnable(GL10.GL_BLEND);
    gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
    gl.glEnable(GL10.GL_LIGHTING);
    float[] ambientlight = {.6f, .6f, .6f, 1f};
    float[] diffuselight = {1f, 1f, 1f, 1f};
    float[] specularlight = {1f, 1f, 1f, 1f};
    gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, MemUtil.makeFloatBuffer(ambientlight));
    gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, MemUtil.makeFloatBuffer(diffuselight));
    gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_SPECULAR, MemUtil.makeFloatBuffer(specularlight));
    gl.glEnable(GL10.GL_LIGHT0);
    
    //initialize the models
    for (Iterator<Model3D> iterator = models.iterator(); iterator.hasNext();) {
      Model3D model = iterator.next();
      model.init(gl);
    }
    
  }

}

Java Source Code List

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