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.monalisa;

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.main.Distorted;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.EffectNames;

import org.distorted.library.main.MeshFlat;

import org.distorted.library.EffectTypes;

import org.distorted.library.type.Dynamic3D;

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 MonaLisaRenderer implements GLSurfaceView.Renderer 

{

    private GLSurfaceView mView;

    private DistortedEffects mEffects;

    private DistortedTexture mTexture;

    private MeshFlat mMesh;

    private DistortedScreen mScreen;

    private int bmpHeight, bmpWidth;

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

    MonaLisaRenderer(GLSurfaceView v)

      {

      mView = v;

      Static3D pLeft = new Static3D( 90, 258, 0);

      Static3D pRight= new Static3D(176, 255, 0);

      Static4D rLeft = new Static4D(-10,-10,25,25);

      Static4D rRight= new Static4D( 10, -5,25,25);

      Dynamic3D dLeft = new Dynamic3D(1000,0.0f);

      Dynamic3D dRight= new Dynamic3D(1000,0.0f);

      dLeft.add ( new Static3D(  0,  0,0) );

      dLeft.add ( new Static3D(-20,-20,0) );

      dRight.add( new Static3D(  0,  0,0) );

      dRight.add( new Static3D( 20,-10,0) );

      mEffects = new DistortedEffects();

      mEffects.distort( dLeft, pLeft , rLeft );

      mEffects.distort(dRight, pRight, rRight);

      mScreen = new DistortedScreen(mView);

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

      { 

      mEffects.abortEffects(EffectTypes.MATRIX);

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

        {

        int w = (height*bmpWidth)/bmpHeight;

        float factor = (float)height/bmpHeight;

        mEffects.move( new Static3D((width-w)/2,0,0) );

        mEffects.scale(factor);

        }

      else

        {

        int h = (width*bmpHeight)/bmpWidth;

        float factor = (float)width/bmpWidth;

        mEffects.move( new Static3D(0,(height-h)/2,0) );

        mEffects.scale(factor);

        }

      mScreen.resize(width, height);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

      InputStream is = mView.getContext().getResources().openRawResource(R.raw.monalisa);

      Bitmap bitmap;

      try 

        {

        bitmap = BitmapFactory.decodeStream(is);

        } 

      finally 

        {

        try 

          {

          is.close();

          } 

        catch(IOException e) { }

        }  

      bmpHeight = bitmap.getHeight();

      bmpWidth  = bitmap.getWidth();

      // We could have gotten here after the activity went to the background

      // for a brief amount of time; in this case mTexture is already created.

      // Do not leak memory by creating it the second time around.

      if( mTexture==null ) mTexture = new DistortedTexture(bmpWidth,bmpHeight);

      // likewise the Mesh

      if( mMesh==null ) mMesh = new MeshFlat(9,9*bmpHeight/bmpWidth);

      // even if mTexture wasn't null, we still need to call setTexture() on it

      // because every time activity goes to background, its OpenGL resources

      // - including Textures - get deleted. We always need to call setTexture()

      // to recreate the internal OpenGL textures.

      mTexture.setTexture(bitmap);

      mScreen.detachAll();

      mScreen.attach(mTexture,mEffects,mMesh);

      DistortedEffects.enableEffect(EffectNames.DISTORT);

      try

        {

        Distorted.onCreate(mView.getContext());

        }

      catch(Exception ex)

        {

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

        }

      }

}