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magiccube / src / main / java / org / distorted / objects / TwistyPyraminx.java @ f074c272

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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.objects;
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import android.content.res.Resources;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import org.distorted.helpers.FactoryCubit;
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import org.distorted.helpers.FactorySticker;
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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.MeshSquare;
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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.main.R;
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import java.util.Random;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public class TwistyPyraminx extends TwistyObject
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{
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  static final float SCREEN_RATIO = 0.88f;
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  static final Static3D[] ROT_AXIS = new Static3D[]
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         {
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           new Static3D(     0,-SQ3/3,-SQ6/3),
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           new Static3D(     0,-SQ3/3,+SQ6/3),
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           new Static3D(+SQ6/3,+SQ3/3,     0),
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           new Static3D(-SQ6/3,+SQ3/3,     0),
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         };
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  private static final int[] BASIC_ANGLE = new int[] { 3,3,3,3 };
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  private static final int[] FACE_COLORS = new int[]
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         {
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           COLOR_GREEN , COLOR_YELLOW,
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           COLOR_BLUE  , COLOR_RED
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         };
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  // computed with res/raw/compute_quats.c
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  private static final Static4D[] QUATS = new Static4D[]
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         {
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           new Static4D(  0.0f,   0.0f,   0.0f,  1.0f),
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           new Static4D(  0.0f,   1.0f,   0.0f,  0.0f),
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           new Static4D( SQ2/2,   0.5f,   0.0f,  0.5f),
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           new Static4D(-SQ2/2,   0.5f,   0.0f,  0.5f),
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           new Static4D(  0.0f,  -0.5f, -SQ2/2,  0.5f),
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           new Static4D(  0.0f,  -0.5f,  SQ2/2,  0.5f),
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           new Static4D( SQ2/2,   0.5f,   0.0f, -0.5f),
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           new Static4D(-SQ2/2,   0.5f,   0.0f, -0.5f),
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           new Static4D(  0.0f,  -0.5f, -SQ2/2, -0.5f),
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           new Static4D(  0.0f,  -0.5f,  SQ2/2, -0.5f),
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           new Static4D( SQ2/2,   0.0f,  SQ2/2,  0.0f),
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           new Static4D(-SQ2/2,   0.0f,  SQ2/2,  0.0f)
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         };
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  private static final double[][] VERTICES_TETRA = new double[][]
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          {
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             {-0.5, SQ2/4, 0.0},
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             { 0.5, SQ2/4, 0.0},
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             { 0.0,-SQ2/4, 0.5},
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             { 0.0,-SQ2/4,-0.5}
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          };
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  private static final int[][] VERT_INDEXES_TETRA = new int[][]
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          {
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             {2,1,0},   // counterclockwise!
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             {3,0,1},
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             {3,2,0},
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             {2,3,1}
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          };
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  private static final double[][] VERTICES_OCTA = new double[][]
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          {
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             { 0.5,   0.0, 0.5},
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             { 0.5,   0.0,-0.5},
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             {-0.5,   0.0,-0.5},
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             {-0.5,   0.0, 0.5},
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             { 0.0, SQ2/2, 0.0},
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             { 0.0,-SQ2/2, 0.0}
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          };
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  private static final int[][] VERT_INDEXES_OCTA = new int[][]
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          {
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             {3,0,4},   // counterclockwise!
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             {0,1,4},
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             {1,2,4},
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             {2,3,4},
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             {5,0,3},
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             {5,1,0},
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             {5,2,1},
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             {5,3,2}
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          };
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  private static final float[][] STICKERS = new float[][]
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          {
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             { -0.4330127f, -0.25f, 0.4330127f, -0.25f, 0.0f, 0.5f }
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          };
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  private static MeshBase[] mMeshes;
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  private static float[] mRowChances;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  TwistyPyraminx(int size, Static4D quat, DistortedTexture texture, MeshSquare mesh,
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                 DistortedEffects effects, int[][] moves, Resources res, int scrWidth)
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    {
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    super(size, size, quat, texture, mesh, effects, moves, ObjectList.PYRA, res, scrWidth);
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  private float[] getRowChances(int numLayers)
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    {
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    int total = numLayers*(numLayers+1)/2;
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    float running=0.0f;
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    float[] chances = new float[numLayers];
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    for(int i=0; i<numLayers; i++)
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      {
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      running += (numLayers-i);
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      chances[i] = running / total;
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      }
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    return chances;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  private void addTetrahedralLattice(int size, int index, float[][] pos)
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    {
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    final float DX = 1.0f;
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    final float DY = SQ2/2;
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    final float DZ = 1.0f;
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    float startX = 0.0f;
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    float startY =-DY*(size-1)/2;
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    float startZ = DZ*(size-1)/2;
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    for(int layer=0; layer<size; layer++)
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      {
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      float currX = startX;
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      float currY = startY;
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      for(int x=0; x<layer+1; x++)
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        {
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        float currZ = startZ;
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        for(int z=0; z<size-layer; z++)
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          {
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          pos[index] = new float[] {currX,currY,currZ};
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          index++;
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          currZ -= DZ;
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          }
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        currX += DX;
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        }
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      startX-=DX/2;
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      startY+=DY;
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      startZ-=DZ/2;
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      }
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// there are (n^3-n)/6 octahedrons and ((n+1)^3 - (n+1))/6 tetrahedrons
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  float[][] getCubitPositions(int size)
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    {
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    int numOcta = (size-1)*size*(size+1)/6;
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    int numTetra= size*(size+1)*(size+2)/6;
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    float[][] ret = new float[numOcta+numTetra][];
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    addTetrahedralLattice(size-1,      0,ret);
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    addTetrahedralLattice(size  ,numOcta,ret);
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    return ret;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  Static4D[] getQuats()
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    {
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    return QUATS;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  int getNumFaces()
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    {
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    return FACE_COLORS.length;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  int getNumStickerTypes(int numLayers)
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    {
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    return STICKERS.length;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  float[][] getCuts(int size)
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    {
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    float[][] cuts = new float[4][size-1];
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    for(int i=0; i<size-1; i++)
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      {
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      float cut = (1.0f-0.25f*size+i)*(SQ6/3);
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      cuts[0][i] = cut;
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      cuts[1][i] = cut;
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      cuts[2][i] = cut;
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      cuts[3][i] = cut;
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      }
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    return cuts;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  int getNumCubitFaces()
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    {
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    return 8;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  float getScreenRatio()
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    {
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    return SCREEN_RATIO;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  boolean shouldResetTextureMaps()
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    {
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    return false;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  private int getNumOctahedrons(int numLayers)
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    {
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    return (numLayers-1)*numLayers*(numLayers+1)/6;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  private int faceColor(int cubit, int axis)
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    {
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    return CUBITS[cubit].mRotationRow[axis] == 1 ? axis : NUM_FACES;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  int getFaceColor(int cubit, int cubitface, int size)
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    {
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    if( cubit< (size-1)*size*(size+1)/6 )
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      {
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      switch( cubitface )
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        {
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        case 0: return faceColor(cubit,0);
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        case 2: return faceColor(cubit,1);
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        case 5: return faceColor(cubit,3);
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        case 7: return faceColor(cubit,2);
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        default:return NUM_FACES;
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        }
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      }
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    else
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      {
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      return cubitface<NUM_FACES ? faceColor(cubit,cubitface) : NUM_FACES;
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      }
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  MeshBase createCubitMesh(int cubit, int numLayers)
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    {
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    if( mMeshes==null )
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      {
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      FactoryCubit factory = FactoryCubit.getInstance();
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      factory.clear();
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      mMeshes = new MeshBase[2];
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      }
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    MeshBase mesh;
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    int numO = getNumOctahedrons(numLayers);
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    if( cubit<numO )
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      {
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      if( mMeshes[0]==null )
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        {
313
        float[][] bands     = new float[][] { {0.05f,35,0.5f,0.8f,6,2,2} };
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        int[] bandIndexes   = new int[] { 0,0,0,0,0,0,0,0 };
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        float[][] corners   = new float[][] { {0.04f,0.20f} };
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        int[] cornerIndexes = new int[] { 0,0,0,0,0,0 };
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        float[][] centers   = new float[][] { {0.0f, 0.0f, 0.0f} };
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        int[] centerIndexes = new int[] { 0,0,0,0,0,0 };
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        FactoryCubit factory = FactoryCubit.getInstance();
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        factory.createNewFaceTransform(VERTICES_OCTA,VERT_INDEXES_OCTA);
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        mMeshes[0] = factory.createRoundedSolid(VERTICES_OCTA, VERT_INDEXES_OCTA,
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                                                bands, bandIndexes,
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                                                corners, cornerIndexes,
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                                                centers, centerIndexes,
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                                                getNumCubitFaces() );
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        }
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      mesh = mMeshes[0].copy(true);
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      }
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    else
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      {
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      if( mMeshes[1]==null )
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        {
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        float[][] bands     = new float[][] { {0.05f,35,0.5f,0.8f,6,2,2} };
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        int[] bandIndexes   = new int[] { 0,0,0,0 };
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        float[][] corners   = new float[][] { {0.06f,0.15f} };
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        int[] cornerIndexes = new int[] { 0,0,0,0 };
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        float[][] centers   = new float[][] { {0.0f, 0.0f, 0.0f} };
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        int[] centerIndexes = new int[] { 0,0,0,0 };
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        FactoryCubit factory = FactoryCubit.getInstance();
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        factory.createNewFaceTransform(VERTICES_TETRA,VERT_INDEXES_TETRA);
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        mMeshes[1] = factory.createRoundedSolid(VERTICES_TETRA, VERT_INDEXES_TETRA,
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                                                bands, bandIndexes,
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                                                corners, cornerIndexes,
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                                                centers, centerIndexes,
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                                                getNumCubitFaces() );
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        factory.printStickerCoords();
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        }
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      mesh = mMeshes[1].copy(true);
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      }
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    return mesh;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  void createFaceTexture(Canvas canvas, Paint paint, int face, int left, int top)
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    {
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    float R = 0.06f;
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    float S = 0.08f;
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    FactorySticker factory = FactorySticker.getInstance();
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    factory.drawRoundedPolygon(canvas, paint, left, top, STICKERS[0], S, FACE_COLORS[face], R);
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// SQ6/3 = height of the tetrahedron
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  float returnMultiplier()
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    {
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    return getNumLayers()/(SQ6/3);
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC API
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  public Static3D[] getRotationAxis()
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    {
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    return ROT_AXIS;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public int[] getBasicAngle()
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    {
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    return BASIC_ANGLE;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public void randomizeNewScramble(int[][] scramble, Random rnd, int curr, int total)
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    {
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    int numLayers = getNumLayers();
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    if( mRowChances==null ) mRowChances = getRowChances(numLayers);
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    if( curr==0 )
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      {
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      scramble[curr][0] = rnd.nextInt(NUM_AXIS);
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      }
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    else
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      {
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      int newVector = rnd.nextInt(NUM_AXIS-1);
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      scramble[curr][0] = (newVector>=scramble[curr-1][0] ? newVector+1 : newVector);
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      // Correct the situation when we first rotate the largest layer, then a tip (which doesn't
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      // intersect anything besides the largest layer!) and then we try to rotate again along
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      // the same axis like 2 rotations before - which carries the risk we rotate the largest
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      // layer back to its spot again and the three moves end up being only a single tip rotation.
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      if( curr>=2 && scramble[curr-1][1]==(numLayers-1) && scramble[curr][0]==scramble[curr-2][0] )
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        {
416
        for(int ax=0; ax<NUM_AXIS; ax++)
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          {
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          if( scramble[curr-1][0]!=ax && scramble[curr-2][0]!=ax )
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            {
420
            scramble[curr][0]=ax;
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            break;
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            }
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          }
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        }
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      }
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    float rowFloat = rnd.nextFloat();
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    for(int row=0; row<numLayers; row++)
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      {
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      if( rowFloat<=mRowChances[row] )
432
        {
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        scramble[curr][1] = row;
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        break;
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        }
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      }
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    switch( rnd.nextInt(2) )
439
      {
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      case 0: scramble[curr][2] = -1; break;
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      case 1: scramble[curr][2] =  1; break;
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      }
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public boolean isSolved()
448
    {
449
    int index = CUBITS[0].mQuatIndex;
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    for(int i=1; i<NUM_CUBITS; i++)
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      {
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      if( thereIsVisibleDifference(CUBITS[i], index) ) return false;
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      }
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    return true;
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    }
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////////////////////////////////////////////////////////////////////////
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// only needed for solvers - there are no Pyraminx solvers ATM)
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  public String retObjectString()
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    {
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    return "";
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public int getObjectName(int numLayers)
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    {
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    switch(numLayers)
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      {
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      case 3: return R.string.pyra3;
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      case 4: return R.string.pyra4;
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      case 5: return R.string.pyra5;
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      }
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    return R.string.pyra3;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public int getInventor(int numLayers)
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    {
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    switch(numLayers)
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      {
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      case 3: return R.string.pyra3_inventor;
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      case 4: return R.string.pyra4_inventor;
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      case 5: return R.string.pyra5_inventor;
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      }
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    return R.string.pyra3_inventor;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public int getComplexity(int numLayers)
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    {
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    switch(numLayers)
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      {
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      case 3: return 4;
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      case 4: return 6;
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      case 5: return 8;
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      }
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    return 4;
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    }
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}