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.blur;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLSurfaceView;

import org.distorted.examples.R;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.PostprocessEffectBlur;

import org.distorted.library.main.DistortedLibrary;

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.DistortedTexture;

import org.distorted.library.mesh.MeshRectangles;

import org.distorted.library.type.Dynamic1D;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static3D;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

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

class BlurRenderer implements GLSurfaceView.Renderer

{

    private final static int SIZE = 500;

    private GLSurfaceView mView;

    private DistortedTexture mTexture;

    private DistortedEffects mEffects, mBufferEffects;

    private DistortedScreen mScreen;

    private DistortedFramebuffer mBuffer;

    private MeshRectangles mMesh, mMeshBuffer;

    private Static1D mRadiusSta;

    private int mObjHeight, mObjWidth;

    private Static3D mMove, mScale, mBufferMove, mBufferScale;

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

   BlurRenderer(GLSurfaceView v)

      {

      mView       = v;

      mMesh       = new MeshRectangles(1,1);

      mMeshBuffer = new MeshRectangles(1,1);

      mScreen     = new DistortedScreen();

      mBuffer     = new DistortedFramebuffer(SIZE,SIZE,1, DistortedFramebuffer.NO_DEPTH_NO_STENCIL);

      mRadiusSta = new Static1D(5);

      Dynamic1D radiusDyn = new Dynamic1D();

      radiusDyn.add(mRadiusSta);

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

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

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

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

      mBufferEffects = new DistortedEffects();

      mBufferEffects.apply(new MatrixEffectScale(mBufferScale));

      mBufferEffects.apply(new MatrixEffectMove(mBufferMove));

      mEffects = new DistortedEffects();

      mEffects.apply( new PostprocessEffectBlur(radiusDyn) );

      mEffects.apply(new MatrixEffectScale(mScale));

      mEffects.apply(new MatrixEffectMove(mMove));

      }

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

   int setBlur(int blur)

     {

     int radius = blur/2;

     mRadiusSta.set(radius);

     return radius;

     }

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

   public void onDrawFrame(GL10 glUnused) 

      {

      long time = System.currentTimeMillis();

      mBuffer.render(time);

      mScreen.render(time);

      }

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

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

     {

     float qw1 = (float)width /SIZE;

     float qh1 = (float)height/SIZE;

     float factor1 = 0.8f* (qw1<qh1 ? qw1:qh1);

     int w1 = (int)(factor1*SIZE);

     int h1 = (int)(factor1*SIZE);

     mBufferMove.set((width-w1)/2 ,(height-h1)/2, 0);

     mBufferScale.set( factor1,factor1,factor1 );

     float qw2 = (float)SIZE/mObjWidth;

     float qh2 = (float)SIZE/mObjHeight;

     float factor2 = 0.9f* (qw2<qh2 ? qw2:qh2);

     int w2 = (int)(factor2*mObjWidth);

     int h2 = (int)(factor2*mObjHeight);

     mMove.set((SIZE-w2)/2 ,(SIZE-h2)/2, 0);

     mScale.set( factor2,factor2,factor2 );

     mScreen.resize(width, height);

     }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

     {

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

     Bitmap bitmap;

     try

       {

       bitmap = BitmapFactory.decodeStream(is);

       }

     finally

       {

       try

         {

         is.close();

         }

       catch(IOException e) { }

       }

     mObjHeight = bitmap.getHeight();

     mObjWidth  = bitmap.getWidth();

     mMesh.setStretch(mObjWidth,mObjHeight,0);

     mMeshBuffer.setStretch(SIZE,SIZE,0);

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

     mTexture.setTexture(bitmap);

     mScreen.detachAll();

     mScreen.attach(mBuffer, mBufferEffects, mMeshBuffer);

     mBuffer.attach(new DistortedNode(mTexture,mEffects,mMesh));

     PostprocessEffectBlur.enable();

     try

       {

       DistortedLibrary.onCreate(mView.getContext());

       }

     catch(Exception ex)

       {

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

       }

     }

}