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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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Leszek Koltunski
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package org.distorted.examples.quaternion;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Random;
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import javax.microedition.khronos.egl.EGLConfig;
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import javax.microedition.khronos.opengles.GL10;
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import org.distorted.examples.R;
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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.EffectTypes;
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import org.distorted.library.MeshObject;
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import org.distorted.library.type.Dynamic;
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import org.distorted.library.type.DynamicQuat;
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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.type.Static4D;
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import org.distorted.library.type.Static3D;
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import org.distorted.library.Distorted;
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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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///////////////////////////////////////////////////////////////////////////////////////////////////
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class QuaternionRenderer implements GLSurfaceView.Renderer
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{
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private static final int NUM_QUATERNIONS = 5;
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private GLSurfaceView mView;
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private DistortedTexture mTexture;
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private DistortedEffects mEffects;
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private MeshObject mMesh;
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private DistortedScreen mScreen;
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private DynamicQuat mRot;
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QuaternionRenderer(GLSurfaceView v)
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{
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mView = v;
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mTexture = new DistortedTexture(1,1);
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mEffects = new DistortedEffects();
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mMesh = new MeshCubes(1,1,false);
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mRot = new DynamicQuat();
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Random rnd = new Random(System.currentTimeMillis());
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float x,y,z,w, len;
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for(int i=0; i<NUM_QUATERNIONS; i++)
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{
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x = 2*rnd.nextFloat()-1;
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y = 2*rnd.nextFloat()-1;
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z = 2*rnd.nextFloat()-1;
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w = 2*rnd.nextFloat()-1;
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len = (float)Math.sqrt( x*x+y*y+z*z+w*w );
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mRot.add(new Static4D(x/len,y/len,z/len,w/len));
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}
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mRot.setCount(0);
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mRot.setDuration(8000);
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mRot.setMode(Dynamic.MODE_LOOP);
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mScreen = new DistortedScreen();
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mScreen.attach(mTexture,mEffects,mMesh);
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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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float w = mTexture.getWidth();
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float h = mTexture.getHeight();
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float d = mTexture.getDepth(mMesh);
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float scaleFactor = 0.5f*(width>height ? height/h:width/w);
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Static3D center = new Static3D(w/2,h/2,-d/2);
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mEffects.abortEffects(EffectTypes.MATRIX);
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mEffects.move( new Static3D( (width-scaleFactor*w)/2 , (height-scaleFactor*h)/2 , 0) );
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mEffects.scale(scaleFactor);
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mEffects.quaternion( mRot,center );
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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.grid);
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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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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("Quaternion", ex.getMessage() );
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}
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}
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}
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