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.bean;

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.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectDistort;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.mesh.MeshRectangles;

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 BeanRenderer implements GLSurfaceView.Renderer 

{

   private GLSurfaceView mView;

   private DistortedEffects mEffects;

   private DistortedScreen mScreen;

   private DistortedTexture mTexture;

   private MeshRectangles mMesh;

   private Static3D mScale;

   private float mBmpRatio;

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

// bean bitmap is 366 x 480. Initialize two dynamic Distorts of the left and right brow.

   BeanRenderer(GLSurfaceView v)

      {

      mView = v;

      Static3D pointLeft  = new Static3D(-85/366.0f,  57/480.0f, 0);

      Static3D pointRight = new Static3D( 50/366.0f, 100/480.0f, 0);

      Static4D regionLeft = new Static4D( -3/366.0f,  33/480.0f, 0, 47/400.0f);

      Static4D regionRight= new Static4D(-14/366.0f,  33/480.0f, 0, 47/400.0f);

      Dynamic3D dynLeft   = new Dynamic3D(2000,0.0f);

      Dynamic3D dynRight  = new Dynamic3D(2000,0.0f);

      Static3D vect1 = new Static3D(         0,         0, 0);

      Static3D vect2 = new Static3D(-15/366.0f, 30/480.0f, 0);

      dynLeft.add(vect1);

      dynLeft.add(vect1);

      dynLeft.add(vect1);

      dynLeft.add(vect1);

      dynLeft.add(vect2);

      dynLeft.add(vect2);

      dynRight.add(vect1);

      dynRight.add(vect2);

      dynRight.add(vect2);

      dynRight.add(vect1);

      dynRight.add(vect1);

      dynRight.add(vect1);

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

      mEffects = new DistortedEffects();

      mEffects.apply( new VertexEffectDistort(dynLeft , pointLeft , regionLeft) );

      mEffects.apply( new VertexEffectDistort(dynRight, pointRight, regionRight));

      mEffects.apply( new MatrixEffectScale(mScale) );

      mTexture = new DistortedTexture();

      mScreen  = new DistortedScreen();

      }

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

   public void onDrawFrame(GL10 glUnused)

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

     {

     if( width<height ) mScale.set( width,   width*mBmpRatio, 1 );

     else               mScale.set( height/mBmpRatio, height, 1 );

     mScreen.resize(width, height);

     }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

     {

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

     Bitmap bitmap;

     try

       {

       bitmap = BitmapFactory.decodeStream(is);

       }

     finally

       {

       try

         {

         is.close();

         }

       catch(IOException e) { }

       }

     mBmpRatio = (float)bitmap.getHeight()/bitmap.getWidth();

     mTexture.setTexture(bitmap);

     // we need a denser Mesh lattice this time for the Distorts to look good.

     float PART = 0.47f;

     int width = 25;

     int height= (int)((25*mBmpRatio)*PART);

     float[] xLoc = new float[width +1];

     float[] yLoc = new float[height+1];

     xLoc[0] = -0.5f;

     yLoc[0] = -0.5f;

     for(int i=1; i<=width; i++) xLoc[i] = 1.0f/width;

     for(int i=1; i<height; i++) yLoc[i] = PART/height;

     yLoc[height] = (height-(height-1)*PART)/height;

     if( mMesh==null ) mMesh = new MeshRectangles(xLoc,yLoc);

     mScreen.detachAll();

     mScreen.attach(mTexture,mEffects,mMesh);

     VertexEffectDistort.enable();

     try

       {

       DistortedLibrary.onCreate(mView.getContext());

       }

     catch(Exception ex)

       {

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

       }

     }

}