Distorted Android

///////////////////////////////////////////////////////////////////////////////////////////////////

// Copyright 2016 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// Distorted 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 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Distorted 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 Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.examples.differentbitmaps;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

import org.distorted.examples.R;

import org.distorted.library.Distorted;

import org.distorted.library.DistortedObject;

import org.distorted.library.GridFlat;

import org.distorted.library.EffectTypes;

import org.distorted.library.type.Dynamic3D;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLES20;

import android.opengl.GLSurfaceView;

///////////////////////////////////////////////////////////////////////////////////////////////////

class DifferentBitmapsRenderer implements GLSurfaceView.Renderer 

{

   private static final int NUM = 3;

   private GLSurfaceView mView;

   private DistortedObject[] mObj;

   private GridFlat mGrid;

   private Static3D mPoint;

   private Dynamic3D dDistort;

   private int bmpHeight, bmpWidth;

///////////////////////////////////////////////////////////////////////////////////////////////////

   DifferentBitmapsRenderer(GLSurfaceView v)

      {     

      mView = v;

      // create shared effects - enlarge the nose and keep moving the whole bitmap left and right.

      dDistort = new Dynamic3D(3000,0.0f);

      dDistort.add(new Static3D( 25,0,0));

      dDistort.add(new Static3D(-25,0,0));

      mPoint = new Static3D(305, 380, 0);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

   private Bitmap readBitmap(int id)

     {

     InputStream is = mView.getContext().getResources().openRawResource(id);

     Bitmap bitmap=null;

     try 

       {

       bitmap = BitmapFactory.decodeStream(is);

       } 

     finally 

       {

       try 

         {

         is.close();

         } 

       catch(IOException e) { }

       }

     return bitmap;

     }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void onDrawFrame(GL10 glUnused) 

      {

      GLES20.glClear( GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);

      long time = System.currentTimeMillis();

      for(int i=NUM-1; i>=0; i--) mObj[i].draw(time, mGrid);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void onSurfaceChanged(GL10 glUnused, int width, int height) 

      {  

      for(int i=NUM-1; i>=0; i--) 

        {   

        mObj[i].abortEffects(EffectTypes.MATRIX);

        }

      if( (float)bmpHeight/(NUM*bmpWidth) > (float)height/width )

        {

        int w = (height*bmpWidth)/bmpHeight;

        float factor = (float)height/bmpHeight;

        for(int i=NUM-1; i>=0; i--) 

          {

          mObj[i].move( new Static3D((width-NUM*w)/2 +i*w ,0,0) );

          mObj[i].scale(factor);

          }

        }

      else

        {

        int w = width/NUM;  

        int h = (width*bmpHeight)/(bmpWidth*NUM);

        float factor = (float)width/(bmpWidth*NUM);

        for(int i=NUM-1; i>=0; i--) 

          {

          mObj[i].move( new Static3D(i*w,(height-h)/2,0) );

          mObj[i].scale(factor);

          }

        }

      Distorted.onSurfaceChanged(width, height); 

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

      GLES20.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);

      Bitmap bitmap0= readBitmap(R.raw.dog);

      Bitmap bitmap1= readBitmap(R.raw.face);

      Bitmap bitmap2= readBitmap(R.raw.cat);

      bmpHeight = bitmap0.getHeight();

      bmpWidth  = bitmap0.getWidth();

      // create NUM DistortedBitmaps with shared effects

      mObj = new DistortedObject[NUM];

      mObj[0] = new DistortedObject(bmpWidth, bmpHeight, 1);

      for(int i=1; i<NUM; i++) 

        mObj[i] = new DistortedObject(mObj[0], Distorted.CLONE_VERTEX|Distorted.CLONE_FRAGMENT);

      mObj[0].setTexture(bitmap0);

      mObj[1].setTexture(bitmap1);

      mObj[2].setTexture(bitmap2);

      mObj[0].sink( new Static1D(8), mPoint, new Static4D(0,0,80,80));

      mObj[0].distort(dDistort,mPoint);

      mGrid = new GridFlat(30,30*bmpHeight/bmpWidth);

      try

        {

        Distorted.onSurfaceCreated(mView.getContext());

        }

      catch(Exception ex)

        {

        android.util.Log.e("Renderer", ex.getMessage() );

        }

      }

}