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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2019 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.rubik;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import org.distorted.library.effect.MatrixEffectMove;
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import org.distorted.library.effect.MatrixEffectQuaternion;
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import org.distorted.library.effect.MatrixEffectRotate;
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import org.distorted.library.effect.MatrixEffectScale;
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import org.distorted.library.effect.VertexEffectSink;
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import org.distorted.library.main.DistortedEffects;
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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.MeshCubes;
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import org.distorted.library.type.Dynamic1D;
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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 org.distorted.library.type.Static4D;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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class RubikCube
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{
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private static final int TEXTURE_SIZE = 100;
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private static final Static3D VectX = new Static3D(1,0,0);
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private static final Static3D VectY = new Static3D(0,1,0);
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private static final Static3D VectZ = new Static3D(0,0,1);
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private MeshCubes[][][] mCubes;
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private DistortedEffects[][][] mEffects;
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private Static4D[][][] mQuatScramble;
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private Static3D[][][] mRotationAxis;
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private Dynamic1D[][][] mRotationAngle;
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private Static3D[][][] mCurrentPosition;
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private Static1D mRotationAngleStatic;
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private DistortedTexture mTexture;
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private int mRotAxis, mRotRow;
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private int mSize;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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RubikCube(int size, Static3D move, Static3D scale, Static4D quatC, Static4D quatA)
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{
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mSize = size;
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mRotationAngleStatic = new Static1D(0);
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mRotAxis= RubikSurfaceView.VECTX;
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mTexture = new DistortedTexture(TEXTURE_SIZE,TEXTURE_SIZE);
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mCubes = new MeshCubes[mSize][mSize][mSize];
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mEffects = new DistortedEffects[mSize][mSize][mSize];
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mQuatScramble = new Static4D[mSize][mSize][mSize];
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mRotationAxis = new Static3D[mSize][mSize][mSize];
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mRotationAngle = new Dynamic1D[mSize][mSize][mSize];
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mCurrentPosition= new Static3D[mSize][mSize][mSize];
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Static3D[][][] cubeVectors = new Static3D[mSize][mSize][mSize];
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Static3D center = new Static3D(TEXTURE_SIZE*0.5f, TEXTURE_SIZE*0.5f, TEXTURE_SIZE*0.5f);
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Static4D region = new Static4D(0,0,0, TEXTURE_SIZE*0.72f);
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VertexEffectSink sinkEffect = new VertexEffectSink( new Static1D(3.0f - 1.8f/mSize), center, region );
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MatrixEffectMove moveEffect = new MatrixEffectMove(move);
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MatrixEffectScale scaleEffect = new MatrixEffectScale(scale);
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MatrixEffectQuaternion quatCEffect = new MatrixEffectQuaternion(quatC, center);
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MatrixEffectQuaternion quatAEffect = new MatrixEffectQuaternion(quatA, center);
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// 3x2 bitmap = 6 squares:
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//
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// RED GREEN BLUE
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// YELLOW WHITE BROWN
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final float ze = 0.0f;
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final float ot = 1.0f/3.0f;
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final float tt = 2.0f/3.0f;
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final float oh = 1.0f/2.0f;
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final float of = 1.0f/40.0f;
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final Static4D mapFront = new Static4D(ze,oh, ze+ot,oh+oh);
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final Static4D mapBack = new Static4D(tt,ze, tt+ot,ze+oh);
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final Static4D mapLeft = new Static4D(ot,ze, ot+ot,ze+oh);
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final Static4D mapRight = new Static4D(ze,ze, ze+ot,ze+oh);
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final Static4D mapTop = new Static4D(tt,oh, tt+ot,oh+oh);
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final Static4D mapBottom= new Static4D(ot,oh, ot+ot,oh+oh);
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final Static4D mapBlack = new Static4D(ze,ze, ze+of,ze+of);
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Static4D tmpFront, tmpBack, tmpLeft, tmpRight, tmpTop, tmpBottom;
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float nc = 0.5f*(mSize-1);
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int vertices = (int)(24.0f/mSize + 2.0f);
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for(int x = 0; x< mSize; x++)
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for(int y = 0; y< mSize; y++)
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for(int z = 0; z< mSize; z++)
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{
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if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 ) // only the external walls
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{
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tmpLeft = (x== 0 ? mapLeft :mapBlack);
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tmpRight = (x== mSize-1 ? mapRight :mapBlack);
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tmpFront = (z== mSize-1 ? mapFront :mapBlack);
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tmpBack = (z== 0 ? mapBack :mapBlack);
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tmpTop = (y== mSize-1 ? mapTop :mapBlack);
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tmpBottom= (y== 0 ? mapBottom:mapBlack);
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mCubes[x][y][z] = new MeshCubes(vertices,vertices,vertices, tmpFront, tmpBack, tmpLeft, tmpRight, tmpTop, tmpBottom);
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cubeVectors[x][y][z] = new Static3D( TEXTURE_SIZE*(x-nc), TEXTURE_SIZE*(y-nc), TEXTURE_SIZE*(z-nc) );
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mQuatScramble[x][y][z] = new Static4D(0,0,0,1);
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mRotationAngle[x][y][z] = new Dynamic1D();
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mRotationAxis[x][y][z] = new Static3D(1,0,0);
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mCurrentPosition[x][y][z] = new Static3D(x,y,z);
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mEffects[x][y][z] = new DistortedEffects();
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mEffects[x][y][z].apply(sinkEffect);
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mEffects[x][y][z].apply(moveEffect);
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mEffects[x][y][z].apply(scaleEffect);
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mEffects[x][y][z].apply(quatCEffect);
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mEffects[x][y][z].apply(quatAEffect);
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mEffects[x][y][z].apply( new MatrixEffectRotate( mRotationAngle[x][y][z], mRotationAxis[x][y][z], center));
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mEffects[x][y][z].apply( new MatrixEffectQuaternion(mQuatScramble[x][y][z], center));
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mEffects[x][y][z].apply( new MatrixEffectMove(cubeVectors[x][y][z]) );
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void attachToScreen(DistortedScreen screen)
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{
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for(int x=0; x<mSize; x++)
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for(int y=0; y<mSize; y++)
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for(int z=0; z<mSize; z++)
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{
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if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )
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{
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screen.attach(mTexture,mEffects[x][y][z],mCubes[x][y][z]);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void addNewRotation(int vector, float offset )
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{
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Static3D axis = VectX;
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switch(vector)
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{
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case RubikSurfaceView.VECTX: axis = VectX; break;
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case RubikSurfaceView.VECTY: axis = VectY; break;
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case RubikSurfaceView.VECTZ: axis = VectZ; break;
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}
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mRotAxis = vector;
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mRotRow = (int)(mSize*offset);
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mRotationAngleStatic.set1(0.0f);
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for(int x=0; x<mSize; x++)
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for(int y=0; y<mSize; y++)
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for(int z=0; z<mSize; z++)
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if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )
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{
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if( belongsToRotation(x,y,z,vector,mRotRow) )
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{
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mRotationAxis[x][y][z].set(axis);
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mRotationAngle[x][y][z].add(mRotationAngleStatic);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void continueRotation(float angle)
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{
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mRotationAngleStatic.set1(angle);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void finishRotationCalledOnNextRender()
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{
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float nearestAngle = (mRotationAngleStatic.get1()+45.0f)/90.0f;
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if( nearestAngle<0 ) nearestAngle-=1.0f;
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int nearestAngleInDegrees = 90*(4-((int)nearestAngle+4)%4);
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double nearestAngleInRadians = nearestAngleInDegrees*Math.PI/180;
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float sinA = (float)Math.sin(nearestAngleInRadians*0.5);
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float cosA = (float)Math.cos(nearestAngleInRadians*0.5);
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mRotationAngleStatic.set1(0);
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float qx=0,qy=0,qz=0;
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switch(mRotAxis)
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{
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case RubikSurfaceView.VECTX: qx=1; break;
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case RubikSurfaceView.VECTY: qy=1; break;
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case RubikSurfaceView.VECTZ: qz=1; break;
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}
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Static4D quat = new Static4D(qx*sinA, qy*sinA, qz*sinA, cosA);
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for(int x=0; x<mSize; x++)
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for(int y=0; y<mSize; y++)
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for(int z=0; z<mSize; z++)
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if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )
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{
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if( belongsToRotation(x,y,z,mRotAxis,mRotRow) )
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{
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mRotationAngle[x][y][z].removeAll();
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mQuatScramble[x][y][z].set(RubikSurfaceView.quatMultiply(quat,mQuatScramble[x][y][z]));
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modifyCurrentPosition(x,y,z,quat);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private boolean belongsToRotation(int x, int y, int z, int vector, int row)
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{
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switch(vector)
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{
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case RubikSurfaceView.VECTX: return mCurrentPosition[x][y][z].get1()==row;
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case RubikSurfaceView.VECTY: return mCurrentPosition[x][y][z].get2()==row;
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case RubikSurfaceView.VECTZ: return mCurrentPosition[x][y][z].get3()==row;
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}
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void modifyCurrentPosition(int x, int y, int z, Static4D quat)
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{
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Static3D current = mCurrentPosition[x][y][z];
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float diff = 0.5f*(mSize-1);
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float cubitCenterX = current.get1() - diff;
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float cubitCenterY = current.get2() - diff;
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float cubitCenterZ = current.get3() - diff;
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Static4D cubitCenter = new Static4D(cubitCenterX, cubitCenterY, cubitCenterZ, 0);
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Static4D rotatedCenter = RubikSurfaceView.rotateVectorByQuat( cubitCenter, quat);
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float rotatedX = rotatedCenter.get1() + diff;
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float rotatedY = rotatedCenter.get2() + diff;
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float rotatedZ = rotatedCenter.get3() + diff;
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int roundedX = (int)(rotatedX+0.1f);
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int roundedY = (int)(rotatedY+0.1f);
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int roundedZ = (int)(rotatedZ+0.1f);
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mCurrentPosition[x][y][z].set1(roundedX);
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mCurrentPosition[x][y][z].set2(roundedY);
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mCurrentPosition[x][y][z].set3(roundedZ);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void createTexture()
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{
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Bitmap bitmap;
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final int S = 128;
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final int W = 3*S;
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final int H = 2*S;
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final int R = S/10;
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final int M = S/20;
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Paint paint = new Paint();
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bitmap = Bitmap.createBitmap(W,H, Bitmap.Config.ARGB_8888);
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Canvas canvas = new Canvas(bitmap);
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paint.setAntiAlias(true);
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paint.setTextAlign(Paint.Align.CENTER);
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paint.setStyle(Paint.Style.FILL);
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// 3x2 bitmap = 6 squares:
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//
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// RED GREEN BLUE
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// YELLOW WHITE BROWN
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paint.setColor(0xff000000); // BLACK BACKGROUND
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canvas.drawRect(0, 0, W, H, paint); //
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paint.setColor(0xffff0000); // RED
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canvas.drawRoundRect( M, M, S-M, S-M, R, R, paint); //
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paint.setColor(0xff00ff00); // GREEN
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canvas.drawRoundRect( S+M, M, 2*S-M, S-M, R, R, paint); //
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paint.setColor(0xff0000ff); // BLUE
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canvas.drawRoundRect(2*S+M, M, 3*S-M, S-M, R, R, paint); //
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paint.setColor(0xffffff00); // YELLOW
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canvas.drawRoundRect( M, S+M, S-M, 2*S-M, R, R, paint); //
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paint.setColor(0xffffffff); // WHITE
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canvas.drawRoundRect( S+M, S+M, 2*S-M, 2*S-M, R, R, paint); //
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paint.setColor(0xffb5651d); // BROWN
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canvas.drawRoundRect(2*S+M, S+M, 3*S-M, 2*S-M, R, R, paint); //
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mTexture.setTexture(bitmap);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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float getTextureSize()
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{
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return TEXTURE_SIZE;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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float getSize()
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{
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return mSize;
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}
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}
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