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.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.GLES30;

import android.opengl.GLSurfaceView;

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

class DifferentBitmapsRenderer implements GLSurfaceView.Renderer 

{

   private static final int NUM = 3;

   private GLSurfaceView mView;

   private DistortedEffects[] mEffects;

   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();

      }

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

   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) 

      {

      GLES30.glClear( GLES30.GL_DEPTH_BUFFER_BIT | GLES30.GL_COLOR_BUFFER_BIT);

      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);

        }

      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--) 

          {

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

          mEffects[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--) 

          {

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

          mEffects[i].scale(factor);

          }

        }

      mScreen.resize(width, height);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

      GLES30.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();

      DistortedTexture[] texture = new DistortedTexture[NUM];

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

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

      texture[0].setTexture(bitmap0);

      texture[1].setTexture(bitmap1);

      texture[2].setTexture(bitmap2);

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

      mScreen.detachAll();

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

      try

        {

        Distorted.onCreate(mView.getContext());

        }

      catch(Exception ex)

        {

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

        }

      }

}