TwistyPuzzleLib

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

// Copyright 2021 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// Magic Cube is proprietary software licensed under an EULA which you should have received      //

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

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

package org.distorted.objectlib.json;

import static org.distorted.objectlib.objects.TwistyBandagedCuboid.OBJECT_NAME_CUBOID;

import static org.distorted.objectlib.objects.TwistyBandagedDiamond.OBJECT_NAME_DIAMOND;

import static org.distorted.objectlib.objects.TwistyBandagedMegaminx.OBJECT_NAME_MEGAMINX;

import static org.distorted.objectlib.objects.TwistyBandagedPyraminx.OBJECT_NAME_PYRAMINX;

import static org.distorted.objectlib.objects.TwistyBandagedSkewb.OBJECT_NAME_SKEWB;

import static org.distorted.objectlib.scrambling.ObjectScrambler.SCRAMBLING_ALGORITHMS;

import static org.distorted.objectlib.scrambling.ObjectScrambler.SCRAMBLING_SHAPESHIFTER;

import static org.distorted.objectlib.scrambling.ScrambleStateLocallyBandaged.MAX_SUPPORTED_SIZE;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.nio.charset.StandardCharsets;

import org.distorted.objectlib.helpers.ObjectFaceShape;

import org.distorted.objectlib.signature.ObjectSignature;

import org.distorted.objectlib.helpers.ObjectStickerOverride;

import org.distorted.objectlib.helpers.ObjectVertexEffects;

import org.distorted.objectlib.main.TwistyObjectCubit;

import org.distorted.objectlib.scrambling.ScrambleEdgeGenerator;

import org.distorted.objectlib.signature.ObjectSignatureCuboid;

import org.distorted.objectlib.signature.ObjectSignatureDiamond;

import org.distorted.objectlib.signature.ObjectSignatureMegaminx;

import org.distorted.objectlib.signature.ObjectSignaturePyraminx;

import org.distorted.objectlib.signature.ObjectSignatureSkewb;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import org.distorted.objectlib.helpers.ObjectShape;

import org.distorted.objectlib.helpers.ObjectSticker;

import org.distorted.objectlib.metadata.ListObjects;

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

public class JsonReader

{

  private int[][] mAlgorithms;

  private int[][] mEdges;

  private int[][] mSolvedQuats;

  private Static4D[] mQuats;

  private int mSolvedFuncIndex;

  private int mNumStickerTypes;

  private float[][] mCuts;

  private boolean[][] mLayerRotatable;

  private float[][] mRotationFactor;

  private int mMovementType, mMovementSplit;

  private int[][][] mEnabled;

  private float[] mDist3D;

  private int mNumCubitFaces, mNumFaces, mNumFaceColors;

  private float[][] mPositions;

  private ObjectShape[] mShapes;

  private ObjectFaceShape[] mFaceShapes;

  private ObjectVertexEffects[] mVertexEffects;

  private Static4D[] mCubitQuats;

  private int mNumCubitVariants;

  private int[] mCubitVariant;

  private int[][] mVariantStickerShape, mVariantFaceIsOuter, mCubitFaceColor;

  private ObjectSticker[] mObjectSticker;

  private Static3D[] mAxis;

  private int[][] mBasicAngle;

  private String mLongName, mShortName, mAuthor;

  private int mYearOfInvention;

  private float mDifficulty;

  private int mCategory;

  private int[] mNumLayers;

  private float mSize;

  private int mScrambleType, mNumScrambles;

  private int mPrice;

  private int[] mColorTable;

  private int mInternalColor;

  private boolean mResetMaps;

  private String mTutorialObject;

  private String[][] mTutorials;

  private ObjectSignature mSignature;

  private int[] mCubitType;

  private float[][] mCubitRowOffset;

  private ObjectStickerOverride[] mStickerOverrides;

  private float mPillowCoeff;

  private int[][] mMinimalCubitsInRow;

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

  public static ObjectSignature produceSignature(String shortName, String longName, long[] signature)

    {

    // 'BAN*_*' ( or future possible 'BA**_*' ) objects

    if( shortName.charAt(0)=='B' && shortName.charAt(1)=='A' && shortName.charAt(4)=='_' )

      {

      char second = shortName.charAt(2);

      char third  = shortName.charAt(3);

      if( (second=='N' || (second>='0' && second<='9')) && (third>='0' && third<='9') )

        {

        int s = shortName.charAt(5) - '0';

        if( s>=2 && s<=MAX_SUPPORTED_SIZE ) return new ObjectSignatureCuboid(s,s,s,signature);

        }

      }

    if( longName.equals(OBJECT_NAME_CUBOID) )

      {

      int x=shortName.charAt(0)-'0';

      int y=shortName.charAt(1)-'0';

      int z=shortName.charAt(2)-'0';

      return new ObjectSignatureCuboid(x,y,z,signature);

      }

    if( longName.equals(OBJECT_NAME_PYRAMINX) )

      {

      int x=shortName.charAt(1)-'0';

      return new ObjectSignaturePyraminx(x,signature);

      }

    if( longName.equals(OBJECT_NAME_MEGAMINX) )

      {

      int x=shortName.charAt(1)-'0';

      return new ObjectSignatureMegaminx(x,signature);

      }

    if( longName.equals(OBJECT_NAME_DIAMOND) )

      {

      int x=shortName.charAt(1)-'0';

      return new ObjectSignatureDiamond(x,signature);

      }

    if( longName.equals(OBJECT_NAME_SKEWB) )

      {

      int x=shortName.charAt(1)-'0';

      return new ObjectSignatureSkewb(x,signature);

      }

    return new ObjectSignature(signature);

    }

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

  private void parseMetadata(JSONObject metadata, int major) throws JSONException

    {

    mLongName        = metadata.getString("longname");

    mShortName       = metadata.getString("shortname");

    mAuthor          = metadata.getString("inventor");

    mYearOfInvention = metadata.getInt("year");

    mSize            = (float)metadata.getDouble("size");

    mNumScrambles    = metadata.getInt("scrambles");

    mResetMaps       = metadata.getBoolean("resetmaps");

    mNumFaces        = metadata.getInt("num_faces");

    if( major<=13 )

      {

      mDifficulty = metadata.getInt("complexity");

      mCategory   = 0;

      }

    else

      {

      mDifficulty = (float)metadata.getDouble("complexity");

      mCategory   = metadata.getInt("category");

      }

    try

      {

      JSONArray sigArray = metadata.getJSONArray("signature");

      int size = sigArray.length();

      long[] signature = new long[size];

      for(int i=0; i<size; i++) signature[i] = sigArray.getLong(i);

      mSignature = produceSignature(mShortName,mLongName,signature);

      }

    catch(JSONException ex)

      {

      long signature = metadata.getLong("signature");

      mSignature = new ObjectSignature(signature);

      }

    boolean free = metadata.optBoolean("free", true);

    if( free ) mPrice = 0;

    else mPrice = metadata.optInt("price", ListObjects.DEFAULT_PRICE_OF_OLD_OBJECTS );

    }

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

  private void parseCubits(JSONArray object) throws JSONException

    {

    int numCubits = object.length();

    mCubitQuats     = new Static4D[numCubits];

    mCubitVariant   = new int[numCubits];

    mPositions      = new float[numCubits][];

    mCubitFaceColor = new int[numCubits][];

    mCubitType      = new int[numCubits];

    mCubitRowOffset = new float[numCubits][];

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

      {

      JSONObject jsonCubit = object.getJSONObject(i);

      float qx = (float)jsonCubit.getDouble("qx");

      float qy = (float)jsonCubit.getDouble("qy");

      float qz = (float)jsonCubit.getDouble("qz");

      float qw = (float)jsonCubit.getDouble("qw");

      mCubitQuats[i] = new Static4D(qx,qy,qz,qw);

      mCubitVariant[i] = jsonCubit.getInt("variant");

      JSONArray jsonCenter = jsonCubit.getJSONArray("centers");

      int numCenter = jsonCenter.length();

      mPositions[i] = new float[numCenter];

      for(int j=0; j<numCenter; j++) mPositions[i][j] = (float)jsonCenter.getDouble(j);

      JSONArray jsonColor  = jsonCubit.getJSONArray("colors");

      int numColor = jsonColor.length();

      mCubitFaceColor[i] = new int[numColor];

      for(int j=0; j<numColor; j++) mCubitFaceColor[i][j] = jsonColor.getInt(j);

      mCubitType[i] = jsonCubit.optInt("type", TwistyObjectCubit.TYPE_NORMAL);

      float xoff = (float)jsonCubit.optDouble("offsetX", 0 );

      float yoff = (float)jsonCubit.optDouble("offsetY", 0 );

      float zoff = (float)jsonCubit.optDouble("offsetZ", 0 );

      mCubitRowOffset[i] = new float[] {xoff,yoff,zoff};

      }

    }

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

  private void parseShapes(JSONArray object) throws JSONException

    {

    mNumCubitVariants     = object.length();

    mVariantStickerShape  = new int[mNumCubitVariants][];

    mVariantFaceIsOuter   = new int[mNumCubitVariants][];

    mShapes               = new ObjectShape[mNumCubitVariants];

    mFaceShapes           = new ObjectFaceShape[mNumCubitVariants];

    mVertexEffects        = new ObjectVertexEffects[mNumCubitVariants];

    mNumCubitFaces = -1;

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

      {

      JSONObject jsonShape = object.getJSONObject(i);

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

      ////// ObjectShape //////////////////////////////////////////////////////

      JSONArray jsonVertices= jsonShape.getJSONArray("vertices");

      int numVertices = jsonVertices.length();

      float[][] verts = new float[numVertices][3];

      for(int v=0; v<numVertices; v++)

        {

        JSONObject vert = jsonVertices.getJSONObject(v);

        verts[v][0] = (float)vert.getDouble("x");

        verts[v][1] = (float)vert.getDouble("y");

        verts[v][2] = (float)vert.getDouble("z");

        }

      JSONArray jsonFaces= jsonShape.getJSONArray("faces");

      int numFaces = jsonFaces.length();

      if( mNumCubitFaces<numFaces ) mNumCubitFaces=numFaces;

      boolean multigon = jsonShape.optBoolean("facesMultigon", false);

      if( !multigon )

        {

        int[][] vertIndices = new int[numFaces][];

        for(int f=0; f<numFaces; f++)

          {

          JSONObject jsonFace = jsonFaces.getJSONObject(f);

          JSONArray vertices = jsonFace.getJSONArray("vertexIndices");

          int numV = vertices.length();

          vertIndices[f] = new int[numV];

          for(int k=0; k<numV; k++) vertIndices[f][k] = vertices.getInt(k);

          }

        mShapes[i] = new ObjectShape(verts,vertIndices);

        }

      else

        {

        int[][][] vertIndices = new int[numFaces][][];

        for(int f=0; f<numFaces; f++)

          {

          JSONObject jsonFace = jsonFaces.getJSONObject(f);

          JSONArray vertices = jsonFace.getJSONArray("vertexIndices");

          int numC = vertices.length();

          vertIndices[f] = new int[numC][];

          for(int c=0; c<numC; c++)

            {

            JSONArray components = vertices.getJSONArray(c);

            int numV = components.length();

            vertIndices[f][c] = new int[numV];

            for(int k=0; k<numV; k++) vertIndices[f][c][k] = components.getInt(k);

            }

          }

        mShapes[i] = new ObjectShape(verts,vertIndices);

        }

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

      ////// StickerShape & Outer /////////////////////////////////////////////

      mVariantStickerShape[i]= new int[numFaces];

      mVariantFaceIsOuter[i] = new int[numFaces];

      int[] bandIndices = new int[numFaces];

      for(int f=0; f<numFaces; f++)

        {

        JSONObject jsonFace = jsonFaces.getJSONObject(f);

        mVariantStickerShape[i][f]= jsonFace.getInt("sticker");

        mVariantFaceIsOuter[i][f] = jsonFace.optInt("isOuter",0);

        bandIndices[f] = jsonFace.getInt("bandIndex");

        }

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

      ////// ObjectFaceShape //////////////////////////////////////////////////

      JSONArray jsonBands= jsonShape.getJSONArray("bands");

      int numBands = jsonBands.length();

      float[][] bands = new float[numBands][7];

      for(int b=0; b<numBands; b++)

        {

        JSONObject jsonBand = jsonBands.getJSONObject(b);

        float[] band = bands[b];

        band[0] = (float)jsonBand.getDouble("height");

        band[1] = (float)jsonBand.getDouble("angle");

        band[2] = (float)jsonBand.getDouble("distanceToCenter");

        band[3] = (float)jsonBand.getDouble("distanceToFlat");

        band[4] = (float)jsonBand.getDouble("numOfBands");

        band[5] = (float)jsonBand.getDouble("extraI");

        band[6] = (float)jsonBand.getDouble("extraJ");

        }

      JSONObject jsonConvexity = jsonShape.optJSONObject("convexity");

      float[] convexity = null;

      if( jsonConvexity!=null )

        {

        convexity = new float[3];

        convexity[0] = (float)jsonConvexity.getDouble("x");

        convexity[1] = (float)jsonConvexity.getDouble("y");

        convexity[2] = (float)jsonConvexity.getDouble("z");

        }

      mFaceShapes[i] = new ObjectFaceShape(bands,bandIndices,convexity);

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

      ////// ObjectVertexEffects //////////////////////////////////////////////

      JSONArray jsonEffects = jsonShape.optJSONArray("effects");

      if( jsonEffects!=null )

        {

        int numEffects = jsonEffects.length();

        String[] name    = new String[numEffects];

        float[][] vars   = new float[numEffects][5];

        float[][] center = new float[numEffects][3];

        float[][] region = new float[numEffects][4];

        boolean[] use    = new boolean[numEffects];

        for(int j=0; j<numEffects; j++)

          {

          JSONObject jsonEffect = jsonEffects.getJSONObject(j);

          name[j] = jsonEffect.getString("name");

          vars[j][0] = (float)jsonEffect.getDouble("var0");

          vars[j][1] = (float)jsonEffect.getDouble("var1");

          vars[j][2] = (float)jsonEffect.getDouble("var2");

          vars[j][3] = (float)jsonEffect.getDouble("var3");

          vars[j][4] = (float)jsonEffect.getDouble("var4");

          center[j][0] = (float)jsonEffect.getDouble("center0");

          center[j][1] = (float)jsonEffect.getDouble("center1");

          center[j][2] = (float)jsonEffect.getDouble("center2");

          region[j][0] = (float)jsonEffect.getDouble("region0");

          region[j][1] = (float)jsonEffect.getDouble("region1");

          region[j][2] = (float)jsonEffect.getDouble("region2");

          region[j][3] = (float)jsonEffect.getDouble("region3");

          use[j] = jsonEffect.getBoolean("use");

          }

        mVertexEffects[i] = new ObjectVertexEffects(name,vars,center,region,use);

        }

      }

    }

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

  private void parseStickers11(JSONArray object) throws JSONException

    {

    mNumStickerTypes = object.length();

    mObjectSticker = new ObjectSticker[mNumStickerTypes];

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

      {

      JSONObject sticker = object.getJSONObject(i);

      float stroke = (float)sticker.getDouble("stroke");

      JSONArray vertices = sticker.getJSONArray("vertices");

      int numVertices = vertices.length();

      float[][][] coords   = new float[1][numVertices][2];

      float[][] curvatures = new float[1][numVertices];

      float[][] radii      = new float[1][numVertices];

      float[][] strokes    = new float[1][numVertices];

      for(int j=0; j<numVertices; j++)

        {

        JSONObject vertex = vertices.getJSONObject(j);

        coords[0][j][0]  = (float)vertex.getDouble("x");

        coords[0][j][1]  = (float)vertex.getDouble("y");

        curvatures[0][j] = (float)vertex.getDouble("angle");

        radii[0][j]      = (float)vertex.getDouble("radius");

        strokes[0][j]    = stroke;

        }

      mObjectSticker[i] = new ObjectSticker(coords,curvatures,radii,strokes);

      }

    }

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

  private void parseStickers12to14(JSONArray object) throws JSONException

    {

    mNumStickerTypes = object.length();

    mObjectSticker = new ObjectSticker[mNumStickerTypes];

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

      {

      JSONObject sticker = object.getJSONObject(i);

      float stroke = (float)sticker.getDouble("stroke");

      JSONArray loops = sticker.getJSONArray("loops");

      int numLoops = loops.length();

      float[][][] coords   = new float[numLoops][][];

      float[][] curvatures = new float[numLoops][];

      float[][] radii      = new float[numLoops][];

      float[][] strokes    = new float[numLoops][];

      for(int l=0; l<numLoops; l++)

        {

        JSONArray loop = loops.getJSONArray(l);

        int numVertices= loop.length();

        coords[l]     = new float[numVertices][2];

        curvatures[l] = new float[numVertices];

        radii[l]      = new float[numVertices];

        strokes[l]    = new float[numVertices];

        for(int v=0; v<numVertices; v++)

          {

          JSONObject vertex= loop.getJSONObject(v);

          coords[l][v][0]  = (float)vertex.getDouble("x");

          coords[l][v][1]  = (float)vertex.getDouble("y");

          curvatures[l][v] = (float)vertex.getDouble("angle");

          radii[l][v]      = (float)vertex.getDouble("radius");

          strokes[l][v]    = stroke;

          }

        }

      mObjectSticker[i] = new ObjectSticker(coords,curvatures,radii,strokes);

      }

    }

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

  private void parseStickers15up(JSONArray object) throws JSONException

    {

    mNumStickerTypes = object.length();

    mObjectSticker = new ObjectSticker[mNumStickerTypes];

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

      {

      JSONObject sticker = object.getJSONObject(i);

      JSONArray loops = sticker.getJSONArray("loops");

      int numLoops = loops.length();

      float[][][] coords   = new float[numLoops][][];

      float[][] curvatures = new float[numLoops][];

      float[][] radii      = new float[numLoops][];

      float[][] strokes    = new float[numLoops][];

      for(int l=0; l<numLoops; l++)

        {

        JSONArray loop = loops.getJSONArray(l);

        int numVertices= loop.length();

        coords[l]     = new float[numVertices][2];

        curvatures[l] = new float[numVertices];

        radii[l]      = new float[numVertices];

        strokes[l]    = new float[numVertices];

        for(int v=0; v<numVertices; v++)

          {

          JSONObject vertex= loop.getJSONObject(v);

          coords[l][v][0]  = (float)vertex.getDouble("x");

          coords[l][v][1]  = (float)vertex.getDouble("y");

          curvatures[l][v] = (float)vertex.getDouble("angle");

          radii[l][v]      = (float)vertex.getDouble("radius");

          strokes[l][v]    = (float)vertex.getDouble("stroke");

          }

        }

      mObjectSticker[i] = new ObjectSticker(coords,curvatures,radii,strokes);

      }

    }

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

  private void parseOverrides(JSONArray object) throws JSONException

    {

    if( object!=null )

      {

      int numOverrides = object.length();

      mStickerOverrides= new ObjectStickerOverride[numOverrides];

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

        {

        JSONObject override  = object.getJSONObject(i);

        JSONArray cubitArray = override.getJSONArray("cubitfaces");

        int color = override.getInt("color");

        int numCubits = cubitArray.length();

        int[] cubitface = new int[numCubits];

        for(int j=0; j<numCubits; j++) cubitface[j] = cubitArray.getInt(j);

        mStickerOverrides[i] = new ObjectStickerOverride(cubitface,color);

        }

      }

    else

      {

      mStickerOverrides = null;

      }

    }

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

  private void parseMesh(JSONObject object, int major) throws JSONException

    {

    JSONArray cubits   = object.getJSONArray("cubits");

    parseCubits(cubits);

    JSONArray shapes   = object.getJSONArray("shapes");

    parseShapes(shapes);

    JSONArray stickers = object.getJSONArray("stickers");

    if( major<=11 )      parseStickers11(stickers);

    else if( major<=14 ) parseStickers12to14(stickers);

    else                 parseStickers15up(stickers);

    JSONArray overrides= object.optJSONArray("overrides");

    parseOverrides(overrides);

    mPillowCoeff = (float)object.optDouble("pillow",1.0);

    }

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

  private void parseAxis(JSONArray object) throws JSONException

    {

    int numAxis = object.length();

    mBasicAngle     = new int[numAxis][];

    mAxis           = new Static3D[numAxis];

    mCuts           = new float[numAxis][];

    mLayerRotatable = new boolean[numAxis][];

    mRotationFactor = new float[numAxis][];

    mNumLayers      = new int[numAxis];

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

      {

      JSONObject jsonAx = object.getJSONObject(i);

      float x = (float)jsonAx.getDouble("x");

      float y = (float)jsonAx.getDouble("y");

      float z = (float)jsonAx.getDouble("z");

      mAxis[i] = new Static3D(x,y,z);

      JSONArray jsonAngles = jsonAx.getJSONArray("basicAngles");

      int numAngles = jsonAngles.length();

      mBasicAngle[i] = new int[numAngles];

      for(int j=0; j<numAngles; j++) mBasicAngle[i][j] = jsonAngles.getInt(j);

      JSONArray jsonCuts = jsonAx.getJSONArray("cuts");

      int numCuts = jsonCuts.length();

      mCuts[i] = new float[numCuts];

      for(int j=0; j<numCuts; j++) mCuts[i][j] = (float)jsonCuts.getDouble(j);

      JSONArray jsonRota = jsonAx.getJSONArray("rotatable");

      int numRota = jsonRota.length();

      mLayerRotatable[i] = new boolean[numRota];

      for(int j=0; j<numRota; j++) mLayerRotatable[i][j] = jsonRota.getBoolean(j);

      JSONArray jsonFactor = jsonAx.optJSONArray("factor");

      if( jsonFactor!=null )

        {

        int numFactor = jsonFactor.length();

        mRotationFactor[i] = new float[numFactor];

        for(int j=0; j<numFactor; j++) mRotationFactor[i][j] = (float)jsonFactor.getDouble(j);

        }

      else

        {

        mRotationFactor[i] = new float[numRota];

        for(int j=0; j<numRota; j++) mRotationFactor[i][j] = 1.0f;

        }

      JSONArray jsonMinimal = jsonAx.optJSONArray("minimal");

      if( jsonMinimal!=null )

        {

        if( mMinimalCubitsInRow==null ) mMinimalCubitsInRow = new int[numAxis][];

        int numMinimal = jsonMinimal.length();

        mMinimalCubitsInRow[i] = new int[numMinimal];

        for(int j=0; j<numMinimal; j++) mMinimalCubitsInRow[i][j] = jsonMinimal.getInt(j);

        }

      mNumLayers[i] = numRota;

      }

    }

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

  private void parseQuats(JSONArray object) throws JSONException

    {

    int numQuats = object.length();

    mQuats = new Static4D[numQuats];

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

      {

      JSONObject jsonQuat = object.getJSONObject(i);

      float x = (float)jsonQuat.getDouble("x");

      float y = (float)jsonQuat.getDouble("y");

      float z = (float)jsonQuat.getDouble("z");

      float w = (float)jsonQuat.getDouble("w");

      mQuats[i] = new Static4D(x,y,z,w);

      }

    }

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

  private int getAlgorithmIndex(int ax, int layer, int angle)

    {

    int numAlgs = mAlgorithms.length;

    for(int alg=0; alg<numAlgs; alg++)

      {

      int[] a = mAlgorithms[alg];

      if( a.length>=3 && a[0]==ax && a[1]==layer && a[2]==angle ) return alg;

      }

    return -1;

    }

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

  private int[] produceEdge(int[][] scramblingData)

    {

    int index=0, length=0;

    int numAxis = scramblingData.length;

    for (int[] scramblingDatum : scramblingData) length += scramblingDatum.length;

    int[] ret = new int[2*length/3];

    for(int ax=0; ax<numAxis; ax++)

      {

      int[] data = scramblingData[ax];

      int num = data.length/3;

      for(int j=0; j<num; j++)

        {

        int layer = data[3*j];

        int angle = data[3*j+1];

        int state = data[3*j+2];

        ret[2*index  ] = getAlgorithmIndex(ax,layer,angle);

        ret[2*index+1] = state;

        index++;

        }

      }

    return ret;

    }

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

  private void parseScrambling6(JSONObject object) throws JSONException

    {

    JSONArray jsonStates = object.getJSONArray("scrambleStates");

    int numStates = jsonStates.length();

    int[][][] scramblingData = new int[numStates][][];

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