TwistyPuzzleLib

///////////////////////////////////////////////////////////////////////////////////////////////////

// Copyright 2019 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Magic Cube.                                                              //

//                                                                                               //

// along with the code. If not, check https://distorted.org/magic/License-Magic-Cube.html        //

package org.distorted.objectlib.main;

import android.content.SharedPreferences;

///////////////////////////////////////////////////////////////////////////////////////////////////

  public static final int TYPE_FOLLOWER = 1;  // those cubits that follow deciders (e.g. small circle edges from Crazy Plus planets)

  public static final int TYPE_DECIDER  = 2;  // cubits deciding about rotation rows of their followers (e.g. center cubits of Crazy Plus Planets)

  private final float[] mCurrentPosition;

  private final float mOrigOffsetX, mOrigOffsetY, mOrigOffsetZ;

  private final int mLen;

  private final int[] mRotationRow;

  private final int mOrigPuzzleFace;

  int mQuatIndex;

///////////////////////////////////////////////////////////////////////////////////////////////////

    mQuatIndex= 0;

    mParent   = parent;

    mLen      = position.length;

    mRowOffset    = mParent.getCubitRowOffset(cubitIndex);

    mTrackingPoint= mParent.getTrackingPoint(cubitIndex,mCubitType);

      {

      mOrigOffsetX = mRowOffset[0];

      mOrigOffsetY = mRowOffset[1];

      mOrigOffsetZ = mRowOffset[2];

      if( mCubitType==TYPE_DECIDER ) mParent.setRotationRowOffset(face,mRowOffset);

      }

    else

      {

      mOrigOffsetX = 0;

      mOrigOffsetY = 0;

      mOrigOffsetZ = 0;

      }

    mCurrentPuzzleFace= face;

    mOrigPosition     = new float[mLen];

    mCurrentPosition  = new float[mLen];

    mTmp              = new float[4];

    for(int i=0; i<mLen; i++)

      {

      mOrigPosition[i]    = position[i];

      mCurrentPosition[i] = position[i];

      }

    mNumAxis     = numAxis;

    mRotationRow = new int[mNumAxis];

    computeRotationRow();

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

// Because of quatMultiplication, errors can accumulate - so to avoid this, we

// correct the value of the 'scramble' quat to what it should be - one of the legal quats from the

// list QUATS.

//

// We also have to remember that the group of unit quaternions is a double-cover of rotations

// in 3D ( q represents the same rotation as -q ) - so invert if needed.

  private int normalizeScrambleQuat(Static4D quat)

    {

    float x = quat.get0();

    float y = quat.get1();

    float z = quat.get2();

    float w = quat.get3();

    float xd,yd,zd,wd;

    float diff, mindiff = Float.MAX_VALUE;

    int ret=0;

    for(int q=0; q<num_quats; q++)

      {

      xd = x - qt.get0();

      yd = y - qt.get1();

      zd = z - qt.get2();

      wd = w - qt.get3();

      diff = xd*xd + yd*yd + zd*zd + wd*wd;

      if( diff < mindiff )

        {

        ret = q;

        mindiff = diff;

        }

      xd = x + qt.get0();

      yd = y + qt.get1();

      zd = z + qt.get2();

      wd = w + qt.get3();

      diff = xd*xd + yd*yd + zd*zd + wd*wd;

      if( diff < mindiff )

        {

        ret = q;

        mindiff = diff;

        }

      }

    return ret;

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

    for(int i=0; i<mNumAxis; i++)

      {

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  int computeAssociation()

    {

    int result = 0, accumulativeShift = 0;

    for(int axis=0; axis<mNumAxis; axis++)

      {

      result += (mRotationRow[axis]<<accumulativeShift);

    return result;

    }

  private String createKey(String key)

    {

    return key+"_"+mCubitIndex+"_"+mOrigPosition[0]+"_"+mOrigPosition[1]+"_"+mOrigPosition[2];

    }

  void removePreferences(String key, SharedPreferences.Editor editor)

    {

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  boolean rotateCubit(Static4D quat)

    {

    boolean result = true;

    for(int i=0; i<len; i++)

      {

      QuatHelper.rotateVectorByQuat( mTmp, mCurrentPosition[3*i], mCurrentPosition[3*i+1], mCurrentPosition[3*i+2], 0, quat);

      mCurrentPosition[3*i  ] = mTmp[0];

      mCurrentPosition[3*i+1] = mTmp[1];

      mCurrentPosition[3*i+2] = mTmp[2];

      mParent.clampPos(mCurrentPosition, 3*i);

      }

    if( mCubitType!=TYPE_NORMAL )

      {

      mTrackingPoint[0] = mTmp[0];

      mTrackingPoint[1] = mTmp[1];

      mTrackingPoint[2] = mTmp[2];

      if( mCurrentPuzzleFace<0 )  // unexpected error

        {

        mCurrentPuzzleFace = 0;

        result = false;

        }

    if( mCubitType==TYPE_DECIDER )

      {

      QuatHelper.rotateVectorByQuat( mTmp, mRowOffset[0], mRowOffset[1], mRowOffset[2], 0, quat);

      mRowOffset[0] = mTmp[0];

      mRowOffset[1] = mTmp[1];

      mRowOffset[2] = mTmp[2];

      }

    return result;

///////////////////////////////////////////////////////////////////////////////////////////////////

  int postRotateCubit(Static4D quat)

 //   if( mCubitIndex==5 )

 //     android.util.Log.e("D", "index="+mCubitIndex+" quat: "+mQuatIndex);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  void solve()

    {

    mQuatIndex = 0;

    if( mCubitType!=TYPE_NORMAL )

      {

      mTrackingPoint = mParent.getTrackingPoint(mCubitIndex,mCubitType);

      if( mCubitType==TYPE_DECIDER )

        {

        mRowOffset[0] = mOrigOffsetX;

        mRowOffset[1] = mOrigOffsetY;

        mRowOffset[2] = mOrigOffsetZ;

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

  void releaseResources()

    {

    mParent = null;

    }

    return mCubitType;

    }

  public float[] getOffset()

    {

    return mRowOffset;

    }

  public int getPuzzleFace()

    {

    return mCurrentPuzzleFace;

    }

}