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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.mirror;
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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.FragmentEffectBrightness;
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import org.distorted.library.effect.MatrixEffectMove;
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import org.distorted.library.effect.MatrixEffectScale;
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import org.distorted.library.effect.VertexEffectScale;
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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.DistortedScreen;
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import org.distorted.library.main.DistortedTexture;
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import org.distorted.library.mesh.MeshQuad;
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import org.distorted.library.type.Static1D;
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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 MirrorRenderer implements GLSurfaceView.Renderer, DistortedLibrary.ExceptionListener
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{
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private static final float MIRROR_SCALE =0.70f; // each next mirror will be 70% of the size or the previous
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private static final float HEAD_SCALE =0.30f; // Head's height will be 30% of the height of the mirror
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private static final float MIRROR_BRIGHTNESS=0.70f; // Each next mirror 30% darker
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private static final float MIRROR_MARGIN =0.11f; // The frame of the mirror takes up 11% of its width
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private static final float MIRROR_MOVE_H =0.12f; // Each next mirror is moved to the left by 12% of
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// the length of the previous one
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private static final float MIRROR_MOVE_V =0.22f; // Move the mirror up
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private final GLSurfaceView mView;
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private final DistortedEffects mEffectsMirror, mEffectsHead, mEffectsScreen;
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private final DistortedEffects mEffectsOffscreen1, mEffectsOffscreen2;
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private final DistortedScreen mScreen;
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private final MeshQuad mQuad1, mQuad2, mQuadMirror, mQuadHead;
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private final Static3D mHeadPosition, mScaleMirror, mMoveOffscreen2, mScaleHead;
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private final Static3D mScaleOffscreen1, mScaleOffscreen2;
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private DistortedTexture mTextureMirror, mTextureHead;
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private DistortedFramebuffer mOffScreen1, mOffScreen2;
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private int mX;
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private int mMirrorW, mMirrorH, mHeadW, mHeadH;
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private int mScreenW, mScreenH;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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MirrorRenderer(GLSurfaceView view)
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{
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mView = view;
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mScreen = new DistortedScreen();
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mQuad1 = new MeshQuad();
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mQuad2 = new MeshQuad();
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mQuadMirror= new MeshQuad();
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mQuadHead = new MeshQuad();
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mEffectsMirror = new DistortedEffects();
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mEffectsHead = new DistortedEffects();
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mEffectsOffscreen1= new DistortedEffects();
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mEffectsOffscreen2= new DistortedEffects();
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mEffectsScreen = new DistortedEffects();
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mX = MirrorActivity.INIT_POSITION;
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mHeadPosition = new Static3D(0,0,0);
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mScaleMirror = new Static3D(1,1,1);
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mMoveOffscreen2 = new Static3D(0,0,0);
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mScaleHead = new Static3D(1,1,1);
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mScaleOffscreen1 = new Static3D(1,1,1);
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mScaleOffscreen2 = new Static3D(1,1,1);
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mEffectsMirror.apply( new VertexEffectScale(mScaleMirror));
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mEffectsScreen.apply( new VertexEffectScale(mScaleOffscreen1) );
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mEffectsOffscreen1.apply( new VertexEffectScale(mScaleOffscreen1) );
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mEffectsOffscreen1.apply( new MatrixEffectScale( new Static3D(MIRROR_SCALE,MIRROR_SCALE,MIRROR_SCALE)));
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mEffectsOffscreen2.apply( new VertexEffectScale(mScaleOffscreen2) );
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mEffectsOffscreen2.apply( new MatrixEffectMove(mMoveOffscreen2) );
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mEffectsHead.apply( new VertexEffectScale(mScaleHead) );
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mEffectsHead.apply( new MatrixEffectMove(mHeadPosition) );
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mEffectsOffscreen1.apply(new FragmentEffectBrightness(new Static1D(MIRROR_BRIGHTNESS)));
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void setPosition(int pos)
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{
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mX = pos;
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float headWdivScreenW = mScreenW >0 ? (float)mHeadW/mScreenW : 0.0f;
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float left = headWdivScreenW -0.5f + MIRROR_MARGIN;
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float right= -left;
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mHeadPosition.set0( ((right-left)*(mX/100.0f) + left) * mScreenW );
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void onResume()
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{
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mScreenW = 0;
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mScreenH = 0;
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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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mOffScreen1.render(time);
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mOffScreen2.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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if( mScreenW!=width || mScreenH!=height)
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{
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mScreenW = width;
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mScreenH = height;
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if( mOffScreen1!=null ) mOffScreen1.markForDeletion();
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if( mOffScreen2!=null ) mOffScreen2.markForDeletion();
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int offscreen1W = mScreenW;
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int offscreen1H = mScreenH;
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int offscreen2W = (int)(MIRROR_SCALE*mScreenW);
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int offscreen2H = (int)(MIRROR_SCALE*mScreenH);
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mScaleOffscreen1.set(offscreen1W, offscreen1H, 0);
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mScaleOffscreen2.set(offscreen2W, offscreen2H, 0);
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mOffScreen1 = new DistortedFramebuffer( offscreen1W, offscreen1H, 1, DistortedFramebuffer.NO_DEPTH_NO_STENCIL );
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mOffScreen2 = new DistortedFramebuffer( offscreen2W, offscreen2H, 1, DistortedFramebuffer.NO_DEPTH_NO_STENCIL );
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float headScale = HEAD_SCALE *mScreenH;
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mScaleHead.set(headScale*mHeadW/mHeadH,headScale,0);
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mScaleMirror.set( mScreenW, mScreenH, 0);
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mMoveOffscreen2.set( (MIRROR_MOVE_H-0.5f+0.5f*MIRROR_SCALE)*mScreenW, (MIRROR_MOVE_V-0.5f+0.5f*MIRROR_SCALE)*mScreenH*mMirrorW/mMirrorH, 0);
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mHeadPosition.set1( (0.5f*HEAD_SCALE - 0.5f + MIRROR_MARGIN*mMirrorW/mMirrorH)*mScreenH );
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setPosition(mX);
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mOffScreen1.attach( mTextureMirror, mEffectsMirror , mQuadMirror );
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mOffScreen1.attach( mOffScreen2 , mEffectsOffscreen2, mQuad2 );
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mOffScreen1.attach( mTextureHead , mEffectsHead , mQuadHead );
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mOffScreen2.attach( mOffScreen1 , mEffectsOffscreen1, mQuad1 );
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mScreen.detachAll();
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mScreen.attach ( mOffScreen1 , mEffectsScreen , mQuad1 );
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mScreen.resize(mScreenW,mScreenH);
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}
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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 isM = mView.getContext().getResources().openRawResource(R.raw.mirror);
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InputStream isH = mView.getContext().getResources().openRawResource(R.raw.messi);
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Bitmap bitmapM, bitmapH;
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try
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{
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bitmapM = BitmapFactory.decodeStream(isM);
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bitmapH = BitmapFactory.decodeStream(isH);
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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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isM.close();
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isH.close();
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}
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catch(IOException ignored) { }
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}
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mMirrorW = bitmapM.getWidth();
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mMirrorH = bitmapM.getHeight();
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mHeadW = bitmapH.getWidth();
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mHeadH = bitmapH.getHeight();
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if( mTextureMirror==null ) mTextureMirror = new DistortedTexture();
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if( mTextureHead ==null ) mTextureHead = new DistortedTexture();
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mTextureMirror.setTexture(bitmapM);
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mTextureHead.setTexture(bitmapH);
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VertexEffectScale.enable();
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FragmentEffectBrightness.enable();
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DistortedLibrary.onSurfaceCreated(mView.getContext(), this);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void distortedException(Exception ex)
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{
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android.util.Log.e("Mirror", ex.getMessage() );
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}
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}
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