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.objecttree;

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.FragmentEffectChroma;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectRotate;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectSink;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedFramebuffer;

import org.distorted.library.main.DistortedNode;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.mesh.MeshCubes;

import org.distorted.library.mesh.MeshRectangles;

import org.distorted.library.main.DistortedTexture;

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 org.distorted.library.type.Static4D;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLES31;

import android.opengl.GLSurfaceView;

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

class ObjectTreeRenderer implements GLSurfaceView.Renderer

{

   private GLSurfaceView mView;

   private DistortedEffects mEffects;

   private DistortedTexture mLisaTexture, mGridTexture;

   private DistortedScreen mScreen;

   private DistortedNode mRoot;

   private MeshRectangles mMeshRectangles;

   private MeshCubes mMeshCubes;

   private int lisaHeight, lisaWidth;

   private boolean mDepth;

   private Static3D mScale, mMove;

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

   ObjectTreeRenderer(GLSurfaceView v)

      {

      mView   = v;

      mDepth  = true;

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

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

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

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

      chromaDyn.add(new Static1D(0.8f));

      mEffects= new DistortedEffects();

      mEffects.apply(new MatrixEffectScale(mScale));

      mEffects.apply(new MatrixEffectMove(mMove));

      mEffects.apply(new FragmentEffectChroma(chromaDyn, new Static3D(0,0,1)));

      mScreen = new DistortedScreen();

      }

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

   private void setDepthPriv()

     {

     if( mDepth ) mRoot.glEnable (GLES31.GL_DEPTH_TEST);

     else         mRoot.glDisable(GLES31.GL_DEPTH_TEST);

     mRoot.glDepthMask(mDepth);

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

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

     mRoot.enableDepthStencil(mDepth ? DistortedFramebuffer.DEPTH_NO_STENCIL:DistortedFramebuffer.NO_DEPTH_NO_STENCIL);

     }

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

   void setDepth(boolean depth)

      {

      mDepth = depth;

      if( mRoot!=null ) setDepthPriv();

      }

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

   public void onDrawFrame(GL10 glUnused)

      {

      mScreen.render(System.currentTimeMillis());

      }

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

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

      { 

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

        {

        int w = (height*lisaWidth)/lisaHeight;

        float factor = (float)height/lisaHeight;

        mMove.set((width-w)/2,0,0);

        mScale.set(factor,factor,factor);

        }

      else

        {

        int h = (width*lisaHeight)/lisaWidth;

        float factor = (float)width/lisaWidth;

        mMove.set(0,(height-h)/2,0);

        mScale.set(factor,factor,factor);

        }

      mScreen.resize(width, height);

      }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

      {

      // TODO

      // This appears to be needed in case we create the app anew with NO DEPTH

      // (i.e. we set 'no depth' and then rotate screen). Investigate.

      GLES31.glEnable(GLES31.GL_CULL_FACE);

      GLES31.glCullFace(GLES31.GL_BACK);

      GLES31.glFrontFace(GLES31.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) { }

        }  

      final int GRID = 20;

      final Static4D mapFB = new Static4D(0.0f,0.0f,1.0f     ,1.0f     );

      final Static4D mapLR = new Static4D(0.0f,0.0f,1.0f/GRID,1.0f     );

      final Static4D mapTB = new Static4D(0.0f,0.0f,1.0f     ,1.0f/GRID);

      lisaWidth     = bitmap1.getWidth();

      lisaHeight    = bitmap1.getHeight();

      int gridWidth = bitmap2.getWidth();

      int gridHeight= bitmap2.getHeight();

      int gridDepth = gridWidth/GRID;

      if( mLisaTexture==null ) mLisaTexture = new DistortedTexture();

      if( mGridTexture==null ) mGridTexture = new DistortedTexture();

      mLisaTexture.setTexture(bitmap1);

      mGridTexture.setTexture(bitmap2);

      DistortedEffects gridEffects = new DistortedEffects();

      if( mMeshRectangles ==null )

        {

        mMeshRectangles = new MeshRectangles(1,1);

        mMeshRectangles.setStretch(lisaWidth,lisaHeight,0);

        }

      if( mMeshCubes==null)

        {

        mMeshCubes= new MeshCubes(GRID,GRID,1, mapFB, mapFB, mapLR, mapLR, mapTB, mapTB);

        mMeshCubes.setStretch(gridWidth,gridHeight,gridDepth);

        }

      mRoot = new DistortedNode(mLisaTexture, mEffects, mMeshRectangles);

      mRoot.attach(mGridTexture,gridEffects,mMeshCubes);

      setDepthPriv();

      mScreen.detachAll();

      mScreen.attach(mRoot);

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

      MatrixEffectMove move = new MatrixEffectMove( new Static3D((lisaWidth-factor*gridWidth)/2,(lisaHeight-factor*gridHeight)/2, gridWidth/(2.0f*GRID)));

      MatrixEffectScale scale = new MatrixEffectScale( new Static3D(factor,factor,factor) );

      gridEffects.apply(scale);

      gridEffects.apply(move);

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

      rotDyn.add(new Static1D(  0));

      rotDyn.add(new Static1D(360));

      rotDyn.setMode(Dynamic.MODE_JUMP);

      MatrixEffectRotate rotate = new MatrixEffectRotate(rotDyn, new Static3D(1,0,0), new Static3D(gridWidth/2,gridHeight/2,gridWidth/(2*GRID)));

      gridEffects.apply(rotate);

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

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

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

      VertexEffectSink sink = new VertexEffectSink(sinkDyn, new Static3D(gridWidth/2.0f, gridHeight/2.0f, gridDepth/2.0f) );

      gridEffects.apply(sink);

      VertexEffectSink.enable();

      FragmentEffectChroma.enable();

      try

        {

        DistortedLibrary.onCreate(mView.getContext());

        }

      catch(Exception ex)

        {

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

        }

      }

}