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.fbo;

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.DistortedEffects;

import org.distorted.library.DistortedFramebuffer;

import org.distorted.library.DistortedNode;

import org.distorted.library.DistortedScreen;

import org.distorted.library.Distorted;

import org.distorted.library.EffectNames;

import org.distorted.library.MeshCubes;

import org.distorted.library.MeshFlat;

import org.distorted.library.DistortedTexture;

import org.distorted.library.EffectTypes;

import org.distorted.library.type.Dynamic;

import org.distorted.library.type.Dynamic1D;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static3D;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLES30;

import android.opengl.GLSurfaceView;

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

class FBORenderer implements GLSurfaceView.Renderer 

{

   private GLSurfaceView mView;

   private DistortedEffects mEffects;

   private DistortedScreen mScreen;

   private DistortedNode mRoot;

   private int lisaHeight, lisaWidth;

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

   FBORenderer(GLSurfaceView v)

      {

      mView   = v;

      mEffects= new DistortedEffects();

      mScreen = new DistortedScreen();

      }

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

   void setDepth(boolean depth)

      {

      if( mRoot!=null )

        {

        if( depth ) mRoot.glEnable (GLES30.GL_DEPTH_TEST);

        else        mRoot.glDisable(GLES30.GL_DEPTH_TEST);

        // TODO for some reason this does not work - investigate.

        //mRoot.glDepthMask(depth);

        // we can also, to save memory, delete/recreate

        // the depth buffer each time. This is optional.

        DistortedFramebuffer fbo = mRoot.getFramebuffer();

        fbo.enableDepth(depth);

        }

      }

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

   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)

      { 

      mEffects.abortEffects(EffectTypes.MATRIX);

      if( (float)lisaHeight/lisaWidth > (float)height/width )

        {

        int w = (height*lisaWidth)/lisaHeight;

        float factor = (float)height/lisaHeight;

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

        mEffects.scale(factor);

        }

      else

        {

        int h = (width*lisaHeight)/lisaWidth;

        float factor = (float)width/lisaWidth;

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

        mEffects.scale(factor);

        }

      mScreen.resize(width, height);

      }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

      {

      GLES30.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

      GLES30.glEnable(GLES30.GL_CULL_FACE);

      GLES30.glCullFace(GLES30.GL_BACK);

      GLES30.glFrontFace(GLES30.GL_CW);

      InputStream is1 = mView.getContext().getResources().openRawResource(R.raw.monalisa);

      InputStream is2 = mView.getContext().getResources().openRawResource(R.raw.grid);

      Bitmap bitmap1, bitmap2;

      try 

        {

        bitmap1 = BitmapFactory.decodeStream(is1);

        bitmap2 = BitmapFactory.decodeStream(is2);

        } 

      finally 

        {

        try 

          {

          is1.close();

          is2.close();

          } 

        catch(IOException e) { }

        }  

      lisaWidth     = bitmap1.getWidth();

      lisaHeight    = bitmap1.getHeight();

      int gridWidth = bitmap2.getWidth();

      int gridHeight= bitmap2.getHeight();

      DistortedTexture lisa = new DistortedTexture(lisaWidth,lisaHeight);

      DistortedTexture grid = new DistortedTexture(gridWidth,gridHeight);

      lisa.setTexture(bitmap1);

      grid.setTexture(bitmap2);

      DistortedEffects gridEffects = new DistortedEffects();

      mEffects.abortAllEffects();

      mRoot = new DistortedNode(lisa, mEffects,new MeshFlat(1,1));

      mRoot.attach(grid,gridEffects,new MeshCubes(10,10,false));

      mScreen.detachAll();

      mScreen.attach(mRoot);

      float factor = lisaWidth/(2.0f*gridWidth);

      gridEffects.move( new Static3D( (lisaWidth-factor*gridWidth)/2,(lisaHeight-factor*gridHeight)/2,0) );

      gridEffects.scale(factor);

      Dynamic1D rotDyn = new Dynamic1D(12000,0.0f);

      rotDyn.add(new Static1D(  0));

      rotDyn.add(new Static1D(360));

      rotDyn.setMode(Dynamic.MODE_JUMP);

      gridEffects.rotate(rotDyn, new Static3D(1,0,0), new Static3D(gridWidth/2,gridHeight/2,gridHeight/10) );

      Dynamic1D sinkDyn = new Dynamic1D(3000,0.0f);

      sinkDyn.add(new Static1D(1.0f));

      sinkDyn.add(new Static1D(0.3f));

      gridEffects.sink(sinkDyn, new Static3D(gridWidth/2,gridHeight/2, 0));

      Dynamic1D chromaDyn = new Dynamic1D(5000,0.0f);

      chromaDyn.add(new Static1D(0.0f));

      chromaDyn.add(new Static1D(1.0f));

      mEffects.chroma(chromaDyn, new Static3D(0,0,1) );

      DistortedEffects.enableEffect(EffectNames.SINK);

      DistortedEffects.enableEffect(EffectNames.CHROMA);

      try

        {

        Distorted.onCreate(mView.getContext());

        }

      catch(Exception ex)

        {

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

        }

      }

}