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examples / src / main / java / org / distorted / examples / blur / BlurRenderer.java @ 678c391d

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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski                                                               //
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//                                                                                               //
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// This file is part of Distorted.                                                               //
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//                                                                                               //
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// Distorted is free software: you can redistribute it and/or modify                             //
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// it under the terms of the GNU General Public License as published by                          //
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// the Free Software Foundation, either version 2 of the License, or                             //
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// (at your option) any later version.                                                           //
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//                                                                                               //
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// Distorted is distributed in the hope that it will be useful,                                  //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //
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// GNU General Public License for more details.                                                  //
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//                                                                                               //
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// You should have received a copy of the GNU General Public License                             //
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// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.examples.blur;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.opengl.GLSurfaceView;
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import org.distorted.examples.R;
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import org.distorted.library.effect.MatrixEffectScale;
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import org.distorted.library.effect.PostprocessEffectBlur;
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import org.distorted.library.main.DistortedLibrary;
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import org.distorted.library.main.DistortedEffects;
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import org.distorted.library.main.DistortedFramebuffer;
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import org.distorted.library.main.DistortedNode;
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import org.distorted.library.main.DistortedScreen;
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import org.distorted.library.main.DistortedTexture;
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import org.distorted.library.mesh.MeshRectangles;
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import org.distorted.library.type.Dynamic2D;
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import org.distorted.library.type.Static2D;
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import org.distorted.library.type.Static3D;
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import java.io.IOException;
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import java.io.InputStream;
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import javax.microedition.khronos.egl.EGLConfig;
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import javax.microedition.khronos.opengles.GL10;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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class BlurRenderer implements GLSurfaceView.Renderer
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{
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    private final static int SIZE = 500;
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    private GLSurfaceView mView;
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    private DistortedTexture mTexture;
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    private DistortedEffects mEffects, mBufferEffects;
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    private DistortedScreen mScreen;
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    private DistortedFramebuffer mBuffer;
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    private MeshRectangles mMesh, mMeshBuffer;
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    private Static2D mHaloRadiusSta;
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    private int mObjHeight, mObjWidth;
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    private Static3D mScale, mBufferScale;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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   BlurRenderer(GLSurfaceView v)
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      {
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      mView       = v;
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      mMesh       = new MeshRectangles(1,1);
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      mMeshBuffer = new MeshRectangles(1,1);
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      mScreen     = new DistortedScreen();
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      mBuffer     = new DistortedFramebuffer(SIZE,SIZE,1, DistortedFramebuffer.NO_DEPTH_NO_STENCIL);
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      mHaloRadiusSta = new Static2D(10,5);
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      Dynamic2D haloAndRadiusDyn = new Dynamic2D();
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      haloAndRadiusDyn.add(mHaloRadiusSta);
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      mScale= new Static3D(1,1,1);
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      mBufferScale= new Static3D(1,1,1);
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      mBufferEffects = new DistortedEffects();
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      mBufferEffects.apply(new MatrixEffectScale(mBufferScale));
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      mEffects = new DistortedEffects();
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      mEffects.apply( new PostprocessEffectBlur(haloAndRadiusDyn) );
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      mEffects.apply(new MatrixEffectScale(mScale));
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      }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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   int setBlur(int blur)
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     {
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     int radius = blur/2;
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     mHaloRadiusSta.set1(radius);
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     return radius;
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     }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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   public void onDrawFrame(GL10 glUnused) 
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      {
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      long time = System.currentTimeMillis();
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      mBuffer.render(time);
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      mScreen.render(time);
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      }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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   public void onSurfaceChanged(GL10 glUnused, int width, int height)
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     {
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     float qw1 = (float)width /SIZE;
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     float qh1 = (float)height/SIZE;
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     float factor1 = 0.8f* (qw1<qh1 ? qw1:qh1);
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     mBufferScale.set( factor1,factor1,factor1 );
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     float qw2 = (float)SIZE/mObjWidth;
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     float qh2 = (float)SIZE/mObjHeight;
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     float factor2 = 0.9f* (qw2<qh2 ? qw2:qh2);
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     mScale.set( factor2,factor2,factor2 );
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     mScreen.resize(width, height);
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     }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)
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     {
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     InputStream is = mView.getContext().getResources().openRawResource(R.raw.dog);
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     Bitmap bitmap;
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     try
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       {
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       bitmap = BitmapFactory.decodeStream(is);
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       }
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     finally
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       {
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       try
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         {
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         is.close();
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         }
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       catch(IOException e) { }
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       }
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     mObjHeight = bitmap.getHeight();
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     mObjWidth  = bitmap.getWidth();
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     mMesh.setStretch(mObjWidth,mObjHeight,0);
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     mMeshBuffer.setStretch(SIZE,SIZE,0);
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     if( mTexture==null ) mTexture = new DistortedTexture();
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     mTexture.setTexture(bitmap);
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     mScreen.detachAll();
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     mScreen.attach(mBuffer, mBufferEffects, mMeshBuffer);
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     mBuffer.attach(new DistortedNode(mTexture,mEffects,mMesh));
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     PostprocessEffectBlur.enable();
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     try
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       {
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       DistortedLibrary.onCreate(mView.getContext());
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       }
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     catch(Exception ex)
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       {
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       android.util.Log.e("Blur", ex.getMessage() );
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       }
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     }
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}