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/>.                            //

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

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLSurfaceView;

import org.distorted.examples.R;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedNode;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.main.MeshObject;

import org.distorted.library.type.Static4D;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

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

    private static final float NEAR = 0.1f;

    private Static3D mCenterPoint, mRegionPoint;

    private Static3D mRegionScalePoint;

    private float mFactorObj, mFactorReg;

    private boolean mShowingRegion=false;

      mView = v;

      mCenterTexture     = new DistortedTexture(100,100);

      mRegionTexture     = new DistortedTexture(100,100);

      mCenterEffects     = new DistortedEffects();

      mRegionEffects     = new DistortedEffects();

      MeshFlat quad      = new MeshFlat(1,1);

      mObjHeight= mObjectTexture.getHeight();

      mQuat2 = new Static4D(0,0,0,1);  // quaternions

      mQuatInt1 = new DynamicQuat(0,0.5f);

      mQuatInt2 = new DynamicQuat(0,0.5f);

      mQuatInt1.add(mQuat1);

      mQuatInt2.add(mQuat2);

      mCenterPoint= new Static3D(0,0,0);

      mCenterInter.add(mCenterPoint);

      mRegionInter= new Dynamic3D();

      mRegionPoint= new Static3D(0,0,0);

      mRegionInter.add(mRegionPoint);

      mRegionScaleInter = new Dynamic3D();

      mRegionScalePoint = new Static3D(0,0,0);

      mRegionScaleInter.add(mRegionScalePoint);

      mRegionNode = new DistortedNode(mRegionTexture, mRegionEffects, quad);

      mScreen.attach(mObjectTexture    , mObjectEffects    , meshO);

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

        else             mScreen.detach(mCenterNode);

        mShowingCenter = showCenter;

        }

      if( mShowingRegion!=showRegion  )

        {

        if( showRegion ) mScreen.attach(mRegionNode);

        else             mScreen.detach(mRegionNode);

        mShowingRegion = showRegion;

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

    public void onDrawFrame(GL10 glUnused)

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

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

      mObjectEffects.abortEffects(EffectTypes.MATRIX);

      mCenterEffects.abortEffects(EffectTypes.MATRIX);

      mRegionEffects.abortEffects(EffectTypes.MATRIX);

      int regionSize = mRegionTexture.getWidth();

        factorCen  = (0.08f*height)/centerSize;

        {

        factorCen  = (0.08f*width)/centerSize;

      mRegionPoint.set(mFactorObj*act.getRegionX(),mFactorObj*act.getRegionY(),0);

      mObjectEffects.scale(mFactorObj);

      mObjectEffects.quaternion(mQuatInt1, rotateObj);

      mObjectEffects.quaternion(mQuatInt2, rotateObj);

      mCenterEffects.quaternion(mQuatInt1, rotateCen);

      mCenterEffects.quaternion(mQuatInt2, rotateCen);

      mCenterEffects.move( new Static3D( (width -factorCen*centerSize-mFactorObj*mObjWidth )/2 ,

      mRegionEffects.quaternion(mQuatInt2, rotateCen);

      mRegionEffects.move(mRegionInter);

      mRegionEffects.scale(mRegionScaleInter);

      mRegionEffects.move( new Static3D( -regionSize/2 , -regionSize/2 , 0) );

      int backgroundSize = mBackgroundTexture.getWidth();

      float factorBackX = ((float)width)/backgroundSize;

      float factorBackY = ((float)height)/backgroundSize;

      // quite tricky: move the background exactly to the FAR plane! (see DistortedOutputSurface.setProjection() )

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

      InputStream isC = act.getResources().openRawResource(R.raw.center);

      InputStream isR = act.getResources().openRawResource(R.raw.region);

      try 

        {

        bitmapC = BitmapFactory.decodeStream(isC);

        bitmapR = BitmapFactory.decodeStream(isR);

        {

        try 

          {

          isC.close();

          isR.close();

        }  

      mBackgroundTexture.setTexture(bitmapB);

      mCenterTexture.setTexture(bitmapC);

      mRegionTexture.setTexture(bitmapR);

      for( EffectNames name : EffectNames.values() )

        {

        type = name.getType();

        if( type== EffectTypes.VERTEX || type==EffectTypes.FRAGMENT )

          {

          DistortedEffects.enableEffect(name);

          }

        }

        {

      catch(Exception ex)

        {

      }