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.VertexEffectScale;

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, DistortedLibrary.ExceptionListener

{

   private static final int[] bitmap = { R.raw.dog, R.raw.face, R.raw.cat };

   private static final int NUM = bitmap.length;

   private GLSurfaceView mView;

   private DistortedEffects[] mEffects;

   private DistortedTexture[] mTexture;

   private MeshRectangles mMesh;

   private DistortedScreen mScreen;

   private Static3D mScaleMatrix, mScaleVertex;

   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 point = new Static3D(0,-60,0);

      Static4D region= new Static4D(0,0,0,300);

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

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

      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)

      VertexEffectScale scale     = new VertexEffectScale(mScaleVertex);

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

      VertexEffectDistort distort = new VertexEffectDistort(dDistort,point,region);

      mEffects[0].apply(scale);   // scale the whole thing (so far by 1, but mScaleVertex will be reset once we know the size of the bitmap)

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

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

      // Now the Matrix effects

      MatrixEffectScale scaleEffect = new MatrixEffectScale(mScaleMatrix);

      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);

      }

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

   public void onDrawFrame(GL10 glUnused)

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

     {

     float horiRatio = (float)width / (NUM*mScaleVertex.get0());

     float vertRatio = (float)height/ (    mScaleVertex.get1());

     float factor    = Math.min(horiRatio, vertRatio);

     mScaleMatrix.set( factor,factor,factor );

     for(int i=NUM-1; i>=0; i--) mMove[i].set((i-(NUM-1)/2.0f)*width/NUM, 0, 0);

     mScreen.resize(width, height);

     }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

     {

     Bitmap[] bmp = new Bitmap[NUM];

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

       {

       bmp[i] = readBitmap(bitmap[i]);

       }

     int bmpHeight = bmp[0].getHeight();

     int bmpWidth  = bmp[0].getWidth();

     mScaleVertex.set(bmpWidth,bmpHeight,0);

     if( mTexture==null )

       {

       mTexture = new DistortedTexture[NUM];

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

         mTexture[i] = new DistortedTexture();

       }

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

       {

       mTexture[i].setTexture(bmp[i]);

       }

     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);

     VertexEffectScale.enable();

     VertexEffectSink.enable();

     VertexEffectDistort.enable();

     DistortedLibrary.onCreate(mView.getContext(),this);

     }

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

   public void distortedException(Exception ex)

     {

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

     }

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

   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;

     }

}