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.DistortedScreen;

import org.distorted.library.DistortedTexture;

import org.distorted.library.DistortedEffects;

import org.distorted.library.EffectNames;

import org.distorted.library.MeshFlat;

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.GLSurfaceView;

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

class DifferentBitmapsRenderer implements GLSurfaceView.Renderer 

{

   private static final int NUM = 3;

   private GLSurfaceView mView;

   private DistortedEffects[] mEffects;

   private DistortedTexture[] mTexture;

   private DistortedScreen mScreen;

   private int bmpHeight, bmpWidth;

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

   DifferentBitmapsRenderer(GLSurfaceView v)

      {     

      mView = v;

      Dynamic3D dDistort = new Dynamic3D(3000,0.0f);

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

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

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

      mEffects = new DistortedEffects[NUM];

      mEffects[0] = new DistortedEffects();

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

        mEffects[i] = new DistortedEffects(mEffects[0], Distorted.CLONE_VERTEX|Distorted.CLONE_FRAGMENT);

      // Add the effects only to the first queue - all VERTEX and FRAGMENT effects are shared!

      // (Matrix effect cannot be shared as we have to display each Texture in a different location)

      mEffects[0].sink( new Static1D(8), mPoint, new Static4D(0,0,80,80));  // enlarge the nose

      mEffects[0].distort(dDistort,mPoint);                                 // keep moving the whole bitmap left and right.

      mScreen = new DistortedScreen();

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

      }

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

   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)

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

     {

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

       {

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

       }

     float qx = (float)width /bmpWidth;

     float qy = (float)height/bmpHeight;

     if( qx > NUM*qy )  // screen more 'horizontal' than NUM bitmaps next to each other

       {

       for(int i=0; i<NUM; i++)

         {

         mEffects[i].move( new Static3D( qy*((0.5f+i)/NUM-0.5f), 0, 0) );

         mEffects[i].scale( new Static3D( qy/qx, 1, 1) );

         }

       }

     else

       {

       for(int i=0; i<NUM; i++)

         {

         mEffects[i].move( new Static3D( (0.5f+i)/NUM-0.5f, 0, 0) );

         mEffects[i].scale( new Static3D( 1.0f/NUM, (qx/qy)/NUM, 1) );

         }

       }

     mScreen.resize(width, height);

     }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

     {

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

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

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

     bmpHeight = bitmap0.getHeight();

     bmpWidth  = bitmap0.getWidth();

     if( mTexture==null )

       {

       mTexture = new DistortedTexture[NUM];

       for(int i=0; i<NUM; i++)

         mTexture[i] = new DistortedTexture(bmpWidth,bmpHeight);

       }

     mTexture[0].setTexture(bitmap0);

     mTexture[1].setTexture(bitmap1);

     mTexture[2].setTexture(bitmap2);

     MeshFlat mesh = new MeshFlat(30,30*bmpHeight/bmpWidth);

     mScreen.detachAll();

     for(int i=NUM-1; i>=0; i--) mScreen.attach(mTexture[i], mEffects[i], mesh);

     DistortedEffects.enableEffect(EffectNames.SINK);

     DistortedEffects.enableEffect(EffectNames.DISTORT);

     try

       {

       Distorted.onCreate(mView.getContext());

       }

     catch(Exception ex)

       {

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

       }

     }

}