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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 Magic Cube. //
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// //
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// Magic Cube 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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// Magic Cube 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 Magic Cube. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.object;
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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.main.DistortedEffects;
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import org.distorted.library.main.DistortedTexture;
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import org.distorted.library.mesh.MeshBase;
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import org.distorted.library.mesh.MeshCubes;
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import org.distorted.library.mesh.MeshRectangles;
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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 extends RubikObject
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{
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int[][] getCubitPositions(int size)
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{
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int[][] tmp = new int[getNumCubits(size)][3];
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int currentPosition = 0;
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for(int x = 0; x<size; x++)
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for(int y = 0; y<size; y++)
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for(int z = 0; z<size; z++)
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{
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if( x==0 || x==size-1 || y==0 || y==size-1 || z==0 || z==size-1 )
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{
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tmp[currentPosition][0] = x;
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tmp[currentPosition][1] = y;
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tmp[currentPosition][2] = z;
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currentPosition++;
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}
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}
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return tmp;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// i.e. size^3 - (size-2)^3 - number of cubits in the outside wall of the Cube (we don't create or
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// render the inside)
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int getNumCubits(int size)
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{
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return size>1 ? 6*size*size - 12*size + 8 : 1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// All legal rotation quats of a RubikCube of any size must have all four of their components
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// equal to either 0, 1, -1, 0.5, -0.5 or +-sqrt(2)/2.
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float[] getLegalQuats()
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{
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final float SQ2 = 0.5f*((float)Math.sqrt(2));
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return new float[] { 0.0f , 0.5f , -0.5f , 1.0f , -1.0f , SQ2 , -SQ2 };
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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boolean belongsToRotation( Static3D currentPosition, Static3D axis, int row)
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{
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if( axis.get0()!=0 ) return currentPosition.get0()==row;
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if( axis.get1()!=0 ) return currentPosition.get1()==row;
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if( axis.get2()!=0 ) return currentPosition.get2()==row;
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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RubikCube(int size, Static4D quatCur, Static4D quatAcc, DistortedTexture texture, MeshRectangles mesh, DistortedEffects effects)
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{
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super(size,quatCur,quatAcc,texture,mesh,effects);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC API
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public 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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private static final Static4D mapFront, mapBack, mapLeft, mapRight, mapTop, mapBottom, mapBlack;
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static
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{
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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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mapFront = new Static4D(ze,oh, ze+ot,oh+oh);
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mapBack = new Static4D(tt,ze, tt+ot,ze+oh);
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mapLeft = new Static4D(ot,ze, ot+ot,ze+oh);
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mapRight = new Static4D(ze,ze, ze+ot,ze+oh);
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mapTop = new Static4D(tt,oh, tt+ot,oh+oh);
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mapBottom= new Static4D(ot,oh, ot+ot,oh+oh);
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mapBlack = new Static4D(ze,ze, ze+of,ze+of);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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MeshBase createCubitMesh(int vertices, int x, int y, int z)
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{
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Static4D tmpLeft = (x== 0 ? mapLeft :mapBlack);
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Static4D tmpRight = (x== mSize-1 ? mapRight :mapBlack);
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Static4D tmpFront = (z== mSize-1 ? mapFront :mapBlack);
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Static4D tmpBack = (z== 0 ? mapBack :mapBlack);
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Static4D tmpTop = (y== mSize-1 ? mapTop :mapBlack);
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Static4D tmpBottom= (y== 0 ? mapBottom:mapBlack);
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return new MeshCubes(vertices,vertices,vertices, tmpFront, tmpBack, tmpLeft, tmpRight, tmpTop, tmpBottom);
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}
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}
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