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distorted-objectlib / src / main / java / org / distorted / objectlib / objects / TwistySquare.java @ 61aa85e4

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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2021 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.objectlib.objects;
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import static org.distorted.objectlib.main.Movement.TYPE_NOT_SPLIT;
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import android.content.res.Resources;
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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.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.objectlib.main.Movement;
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import org.distorted.objectlib.main.Movement6;
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import org.distorted.objectlib.main.ObjectList;
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import org.distorted.objectlib.main.Twisty6;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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abstract class TwistySquare extends Twisty6
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{
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  static final float COS15 = (SQ6+SQ2)/4;
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  static final float SIN15 = (SQ6-SQ2)/4;
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  static final float     X = 3*(2-SQ3)/2;
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  // The third, artificial axis is for the generic scrambling algorithm.
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  // Otherwise it wouldn't be possible to rotate the LO and UP layers
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  // consecutively.
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  static final Static3D[] ROT_AXIS = new Static3D[]
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    {
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      new Static3D(0,+1,0),
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      new Static3D(COS15,0,SIN15),
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      new Static3D(0,-1,0),
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    };
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  private static final int[][][] ENABLED = new int[][][]
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    {
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      {{0}},{{0}},{{1}},{{1}},{{0,1}},{{0,1}}
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    };
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  private int[] mBasicAngle;
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  private float[][] mCuts;
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  private boolean[][] mLayerRotatable;
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  private Movement mMovement;
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  Static4D[] mQuats;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  TwistySquare(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, res, scrWidth);
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  void initializeQuats()
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    {
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    mQuats = 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, SIN15,  0.0f, COS15 ),
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      new Static4D(  0.0f,  0.5f,  0.0f, SQ3/2 ),
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      new Static4D(  0.0f, SQ2/2,  0.0f, SQ2/2 ),
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      new Static4D(  0.0f, SQ3/2,  0.0f,  0.5f ),
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      new Static4D(  0.0f, COS15,  0.0f, SIN15 ),
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      new Static4D(  0.0f,  1.0f,  0.0f,  0.0f ),
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      new Static4D(  0.0f, COS15,  0.0f,-SIN15 ),
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      new Static4D(  0.0f, SQ3/2,  0.0f, -0.5f ),
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      new Static4D(  0.0f, SQ2/2,  0.0f,-SQ2/2 ),
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      new Static4D(  0.0f,  0.5f,  0.0f,-SQ3/2 ),
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      new Static4D(  0.0f, SIN15,  0.0f,-COS15 ),
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      new Static4D(  1.0f,  0.0f,  0.0f,  0.0f ),
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      new Static4D( COS15,  0.0f, SIN15,  0.0f ),
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      new Static4D( SQ3/2,  0.0f,  0.5f,  0.0f ),
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      new Static4D( SQ2/2,  0.0f, SQ2/2,  0.0f ),
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      new Static4D(  0.5f,  0.0f, SQ3/2,  0.0f ),
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      new Static4D( SIN15,  0.0f, COS15,  0.0f ),
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      new Static4D(  0.0f,  0.0f,  1.0f,  0.0f ),
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      new Static4D(-SIN15,  0.0f, COS15,  0.0f ),
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      new Static4D( -0.5f,  0.0f, SQ3/2,  0.0f ),
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      new Static4D(-SQ2/2,  0.0f, SQ2/2,  0.0f ),
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      new Static4D(-SQ3/2,  0.0f,  0.5f,  0.0f ),
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      new Static4D(-COS15,  0.0f, SIN15,  0.0f )
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      };
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  void initializeBasicAngle()
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    {
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    mBasicAngle = new int[] {12,2,12};
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  protected Static4D[] getQuats()
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    {
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    if( mQuats==null ) initializeQuats();
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    return mQuats;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  protected int getNumCubitFaces()
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    {
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    return 6;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  protected float[][] getCuts(int numLayers)
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    {
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    if( mCuts==null )
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      {
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      mCuts = new float[][] { {-0.5f,+0.5f}, {0.0f}, {-0.5f,+0.5f} };
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      }
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    return mCuts;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  private void getLayerRotatable(int numLayers)
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    {
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    if( mLayerRotatable==null )
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      {
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      mLayerRotatable = new boolean[][] { {true,false,true}, {true,true}, {true,false,true} };
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      }
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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 Movement getMovement()
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    {
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    if( mMovement==null )
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      {
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      int numLayers = getNumLayers();
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      if( mCuts==null ) getCuts(numLayers);
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      getLayerRotatable(numLayers);
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      mMovement = new Movement6(ROT_AXIS,mCuts,mLayerRotatable,numLayers,TYPE_NOT_SPLIT,ENABLED);
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      }
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    return mMovement;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public int[] getBasicAngle()
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    {
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    if( mBasicAngle ==null ) initializeBasicAngle();
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    return mBasicAngle;
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    }
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}
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