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86bdcff5
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2023 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 proprietary software licensed under an EULA which you should have received //
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// along with the code. If not, check https://distorted.org/magic/License-Magic-Cube.html //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.objectlib.tablebases;
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import static org.distorted.objectlib.main.TwistyObject.SQ2;
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import android.content.res.Resources;
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import org.distorted.library.type.Static3D;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public class TBPyraminxDiamond extends TablebasesAbstract
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{
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55b8c763
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Leszek Koltunski
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private static final int[][] CORNER_QUATS =
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{
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{0,0,0,0},
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{0,0,0,0},
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{0,0,0,0},
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{0,0,0,0},
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{0,0,0,0},
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{0,0,0,0},
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};
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private static final int[][] CENTER_QUATS =
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{
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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{0,0,0,0,0,0,0,0},
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////
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86bdcff5
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Leszek Koltunski
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public TBPyraminxDiamond()
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{
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super();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public TBPyraminxDiamond(Resources res)
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{
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super(res, 0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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int[][] getBasicAngles()
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{
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int[] tmp = {4,4,4};
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return new int[][] { tmp,tmp,tmp };
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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Static3D[] getRotationAxis()
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{
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return new Static3D[]
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{
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new Static3D(SQ2/2, 0, SQ2/2),
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new Static3D( 0, 1, 0),
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new Static3D(SQ2/2, 0,-SQ2/2)
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};
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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float[][] getPosition()
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{
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float B0 = 1.5f*SQ2;
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float C0 = 1.5f;
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float A = 1.03f;
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float B1 = 0.5f*SQ2*A;
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float C1 = A;
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return new float[][]
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{
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{ 0, B0, 0 },
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{ 0,-B0, 0 },
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{ C0, 0, C0 },
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{ C0, 0,-C0 },
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{-C0, 0, C0 },
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{-C0, 0,-C0 },
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{ 0, B1, C1 },
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{ 0, B1,-C1 },
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{ 0,-B1, C1 },
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{ 0,-B1,-C1 },
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{ C1, B1, 0 },
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{ C1,-B1, 0 },
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{-C1, B1, 0 },
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{-C1,-B1, 0 },
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};
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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float[][] getCuts()
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{
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float C = 0.5f*SQ2;
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float[] cut = { -C,C};
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return new float[][] { cut,cut,cut };
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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boolean[][] getRotatable()
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{
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boolean[] tmp = {true,false,true};
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return new boolean[][] { tmp,tmp,tmp };
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// specifically for the tablebase
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// 4^6 - corner twists; 8! - center permutation; divide by 2 because parity of permutation must
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// agree with parity of total twists = (4^6)*8! / 2 = 82.575.360
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int getSize()
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{
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return 82575360;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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int getMinScramble()
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{
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return 8;
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}
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55b8c763
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int findIndex(int[] table, int entry)
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{
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int len = table.length;
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for(int i=0; i<len; i++)
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if( table[i]==entry ) return i;
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return -1;
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}
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86bdcff5
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public int[] getQuats(int index)
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{
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55b8c763
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Leszek Koltunski
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int[] quats = new int[14];
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int[] perm = new int[8];
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int[] twist = new int[6];
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int centers_perm_num = index/2048;
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int total_twist = index%2048;
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TablebaseHelpers.getPermutationFromNum(perm,8,centers_perm_num);
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boolean even = TablebaseHelpers.permutationIsEven(perm);
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for(int i=0; i<5; i++) { twist[i] = total_twist%4; total_twist /=4; }
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int total = twist[0]+twist[1]+twist[2]+twist[3]+twist[4]+(even?0:1);
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twist[5] = 2*(1-total_twist) + (total%2);
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for(int i=0; i<6; i++) quats[i ] = CORNER_QUATS[i][twist[i]];
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for(int i=0; i<8; i++) quats[i+6] = CENTER_QUATS[i][perm[i]];
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return quats;
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86bdcff5
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Leszek Koltunski
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public int getIndex(int[] quats)
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{
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55b8c763
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Leszek Koltunski
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int[] twist = new int[6];
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int[] perm = new int[8];
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for(int i=0; i<6; i++) twist[i] = findIndex(CORNER_QUATS[i],quats[i]);
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for(int i=0; i<8; i++) perm[i] = findIndex(CENTER_QUATS[i],quats[i]);
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int centers_perm_num = TablebaseHelpers.computePermutationNum(perm);
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int total_twist = twist[0]+ 4*(twist[1]+ 4*(twist[2]+ 4*(twist[3]+ 4*(twist[4]+ 4*(twist[5]>1 ? 0:1)))));
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return total_twist + 2048*centers_perm_num;
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86bdcff5
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Leszek Koltunski
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}
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}
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