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examples / src / main / java / org / distorted / examples / flag / FlagRenderer.java @ 39a0d81b

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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.flag;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.opengl.GLES30;
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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.Distorted;
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import org.distorted.library.DistortedEffects;
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import org.distorted.library.DistortedScreen;
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import org.distorted.library.EffectNames;
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import org.distorted.library.MeshCubes;
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import org.distorted.library.DistortedTexture;
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import org.distorted.library.EffectTypes;
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import org.distorted.library.type.Dynamic;
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import org.distorted.library.type.Dynamic5D;
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import org.distorted.library.type.DynamicQuat;
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import org.distorted.library.type.Static3D;
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import org.distorted.library.type.Static4D;
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import org.distorted.library.type.Static5D;
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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 FlagRenderer implements GLSurfaceView.Renderer
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{
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    private GLSurfaceView mView;
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    private DistortedEffects mEffects;
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    private DistortedTexture mTexture;
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    private DistortedScreen mScreen;
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    private DynamicQuat mQuatInt1, mQuatInt2;
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    private Dynamic5D mWaveDyn;
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    private Static5D mWaveSta1, mWaveSta2;
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    private int mObjWidth, mObjHeight;
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    Static4D mQuat1, mQuat2;
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    int mScreenMin;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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    FlagRenderer(GLSurfaceView v)
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      {
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      mView = v;
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      mEffects = new DistortedEffects();
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      mTexture = new DistortedTexture(500,300);
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      mObjWidth = mTexture.getWidth();
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      mObjHeight= mTexture.getHeight();
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      mWaveDyn = new Dynamic5D(1000,0.0f);
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      mWaveSta1= new Static5D(0,0,-180,0,0);  // all other values besides the
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      mWaveSta2= new Static5D(0,0,+180,0,0);  // fourth will be set from the UI
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      mWaveDyn.add(mWaveSta1);
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      mWaveDyn.add(mWaveSta2);
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      mWaveDyn.setMode(Dynamic.MODE_JUMP);
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      mQuat1 = new Static4D(           0,         0,           0,          1);  // unity quaternion
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      mQuat2 = new Static4D(-0.25189602f,0.3546389f,0.009657208f,0.90038127f);  // something semi-random that looks good
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      mQuatInt1 = new DynamicQuat(0,0.5f);
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      mQuatInt2 = new DynamicQuat(0,0.5f);
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      mQuatInt1.add(mQuat1);
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      mQuatInt2.add(mQuat2);
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      Static3D waveCenter = new Static3D(mObjWidth, mObjHeight/2, 0);  // middle of the right edge
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      Static4D waveRegion = new Static4D(0,0,mObjWidth,mObjWidth);
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      mEffects.wave(mWaveDyn, waveCenter, waveRegion);
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      mScreen = new DistortedScreen();
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      mScreen.attach(mTexture,mEffects, new MeshCubes(50,30,false) );
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      }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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    void setAmplitude(int a)
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      {
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      mWaveSta1.set1(a);
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      mWaveSta2.set1(a);
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      }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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    void setLength(int l)
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      {
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      mWaveSta1.set2(l);
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      mWaveSta2.set2(l);
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      }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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    void setAngleA(int a)
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      {
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      mWaveSta1.set4(a);
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      mWaveSta2.set4(a);
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      }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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    void setAngleB(int b)
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      {
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      mWaveSta1.set5(b);
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      mWaveSta2.set5(b);
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      }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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    void setNoise(Static5D noise)
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      {
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      mWaveDyn.setNoise(noise);
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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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      mScreen.render( System.currentTimeMillis() );
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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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      mScreenMin = width<height ? width:height;
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    	float q= ((float)width/height)*((float)mObjHeight/mObjWidth);
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      float scale = 0.8f;
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      Static3D center = new Static3D(0,0,0);
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      mEffects.abortEffects(EffectTypes.MATRIX);
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      mEffects.quaternion(mQuatInt1, center);
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      mEffects.quaternion(mQuatInt2, center);
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      mEffects.scale(  q<1 ? (new Static3D(scale,scale*q,scale)) : (new Static3D(scale/q,scale,scale/q)) );
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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.iceland);
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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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      mTexture.setTexture(bitmap);
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      DistortedEffects.enableEffect(EffectNames.WAVE);
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      try
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        {
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        Distorted.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("Flag", ex.getMessage() );
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        }
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      }
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}