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.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectDistort;

import org.distorted.library.effect.VertexEffectSink;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.mesh.MeshRectangles;

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 MeshRectangles mMesh;

   private DistortedScreen mScreen;

   private int bmpHeight, bmpWidth;

   private Static3D mScale;

   private Static3D[] mMove;

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

   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, 220, 0);

      mEffects = new DistortedEffects[NUM];

      mEffects[0] = new DistortedEffects();

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

        mEffects[i] = new DistortedEffects(mEffects[0], DistortedLibrary.CLONE_VERTEX| DistortedLibrary.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)

      VertexEffectSink sink = new VertexEffectSink(new Static1D(8), mPoint, new Static4D(0,0,0,80));

      VertexEffectDistort distort = new VertexEffectDistort(dDistort,mPoint);

      mEffects[0].apply(sink);    // enlarge the nose

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

      // Now the Matrix effects

      mScale = new Static3D(1,1,1);

      MatrixEffectScale scaleEffect = new MatrixEffectScale(mScale);

      mMove  = new Static3D[NUM];

      MatrixEffectMove[] moveEffect = new MatrixEffectMove[NUM];

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

        {

        mMove[i] = new Static3D(0,0,0);

        moveEffect[i] = new MatrixEffectMove(mMove[i]);

        mEffects[i].apply(scaleEffect);

        mEffects[i].apply(moveEffect[i]);

        }

      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;

     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)

     {

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

       {

       int w = (height*bmpWidth)/bmpHeight;

       float factor = (float)height/bmpHeight;

       mScale.set(factor,factor,factor);

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

         {

         mMove[i].set((width-NUM*w)/2 +i*w ,0,0);

         }

       }

     else

       {

       int w = width/NUM;

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

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

       mScale.set(factor,factor,factor);

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

         {

         mMove[i].set(i*w,(height-h)/2,0);

         }

       }

     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);

     if( mMesh==null ) mMesh = new MeshRectangles(30,30*bmpHeight/bmpWidth);

     mScreen.detachAll();

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

     VertexEffectSink.enable();

     VertexEffectDistort.enable();

     try

       {

       DistortedLibrary.onCreate(mView.getContext());

       }

     catch(Exception ex)

       {

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

       }

     }

}