Magic Cube

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectSink;

public class RubikCube extends DistortedNode

            static final float CUBE_SCREEN_RATIO = 0.5f;

    private static final int POST_ROTATION_MILLISEC = 500;

    private static final int TEXTURE_SIZE = 100;

    public static final int VECTX = 0;  //

    public static final int VECTY = 1;  // don't change this

    public static final int VECTZ = 2;  //

    private Static1D mRotationAngleStatic, mRotationAngleMiddle, mRotationAngleFinal;

    private Static3D mMove, mScale, mNodeMove, mNodeScale;

    private Static4D mQuatAccumulated;

    private DistortedTexture mTexture;

    private int mRotAxis, mRotRow;

    private int mSize;

    private DistortedTexture mNodeTexture;

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

    private int computeNearestAngle(float angle)

      {

      final int NEAREST = 90;

      int tmp = (int)((angle+NEAREST/2)/NEAREST);

      if( angle< -(NEAREST*0.5) ) tmp-=1;

      return NEAREST*tmp;

      }

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

    private float getSinkStrength()

      {

      switch(mSize)

        {

        case 1 : return 1.1f;

        case 2 : return 1.5f;

        case 3 : return 1.8f;

        case 4 : return 2.0f;

        default: return 3.0f - 4.0f/mSize;

        }

      }

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

// PUBLIC API

    public RubikCube(int size, Static4D quatCur, Static4D quatAcc, DistortedTexture texture, MeshFlat mesh, DistortedEffects effects)

      super(texture,effects,mesh);

      mNodeTexture = texture;

      mSize = size;

      mRotationAngleStatic = new Static1D(0);

      mRotationAngleMiddle = new Static1D(0);

      mRotationAngleFinal  = new Static1D(0);

      mMove     = new Static3D(0,0,0);

      mScale    = new Static3D(1,1,1);

      mNodeMove = new Static3D(0,0,0);

      mNodeScale= new Static3D(1,1,1);

      mQuatAccumulated = quatAcc;

      Static3D sinkCenter = new Static3D(TEXTURE_SIZE*0.5f, TEXTURE_SIZE*0.5f, TEXTURE_SIZE*0.5f);

      Static4D region = new Static4D(0,0,0, TEXTURE_SIZE*0.72f);

      VertexEffectSink        sinkEffect = new VertexEffectSink( new Static1D(getSinkStrength()), sinkCenter, region );

      MatrixEffectMove        moveEffect = new MatrixEffectMove(mMove);

      MatrixEffectScale      scaleEffect = new MatrixEffectScale(mScale);

      MatrixEffectQuaternion quatCEffect = new MatrixEffectQuaternion(quatCur, matrCenter);

      MatrixEffectQuaternion quatAEffect = new MatrixEffectQuaternion(quatAcc, matrCenter);

      MatrixEffectMove       nodeMoveEffect  = new MatrixEffectMove(mNodeMove);

      MatrixEffectScale      nodeScaleEffect = new MatrixEffectScale(mNodeScale);

      effects.apply(nodeScaleEffect);

      effects.apply(nodeMoveEffect);

              mEffects[x][y][z].apply(sinkEffect);

              mEffects[x][y][z].apply(quatAEffect);

              mEffects[x][y][z].apply(quatCEffect);

              mEffects[x][y][z].apply(scaleEffect);

              mEffects[x][y][z].apply(moveEffect);

    public void addNewRotation(int vector, int row )

      {

      Static3D axis = VectX;

      switch(vector)

        {

        case VECTX: axis = VectX; break;

        case VECTY: axis = VectY; break;

        case VECTZ: axis = VectZ; break;

        }

      mRotAxis = vector;

      mRotRow  = row;

      mRotationAngleStatic.set0(0.0f);

      for(int x=0; x<mSize; x++)

        for(int y=0; y<mSize; y++)

          for(int z=0; z<mSize; z++)

            if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )

              {

              if( belongsToRotation(x,y,z,vector,mRotRow) )

                {

                mRotationAxis[x][y][z].set(axis);

                mRotationAngle[x][y][z].add(mRotationAngleStatic);

                }

              }

      }

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

    public void continueRotation(float angleInDegrees)

      {

      mRotationAngleStatic.set0(angleInDegrees);

      }

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

    public Static4D getRotationQuat()

      {

      return mQuatAccumulated;

      }

    public long finishRotationNow(EffectListener listener)

      {

      boolean first = true;

      long effectID=0;

      for(int x=0; x<mSize; x++)

        for(int y=0; y<mSize; y++)

          for(int z=0; z<mSize; z++)

            if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )

              {

              if( belongsToRotation(x,y,z,mRotAxis,mRotRow) )

                {

                if( first )

                  {

                  first = false;

                  mRotateEffect[x][y][z].notifyWhenFinished(listener);

                  effectID = mRotateEffect[x][y][z].getID();

                  int pointNum = mRotationAngle[x][y][z].getNumPoints();

                  if( pointNum>=1 )

                    {

                    float startingAngle = mRotationAngle[x][y][z].getPoint(pointNum-1).get0();

                    int nearestAngleInDegrees = computeNearestAngle(startingAngle);

                    mRotationAngleStatic.set0(startingAngle);

                    mRotationAngleFinal.set0(nearestAngleInDegrees);

                    mRotationAngleMiddle.set0( nearestAngleInDegrees + (nearestAngleInDegrees-startingAngle)*0.2f );

                    }

                  else

                    {

                    android.util.Log.e("cube", "ERROR finishing rotation!");

                    return 0;

                    }

                  }

                mRotationAngle[x][y][z].setDuration(POST_ROTATION_MILLISEC);

                mRotationAngle[x][y][z].resetToBeginning();

                mRotationAngle[x][y][z].removeAll();

                mRotationAngle[x][y][z].add(mRotationAngleStatic);

                mRotationAngle[x][y][z].add(mRotationAngleMiddle);

                mRotationAngle[x][y][z].add(mRotationAngleFinal);

                }

              }

      return effectID;

      }

    public void releaseResources()

      {

      mTexture.markForDeletion();

      for(int x=0; x<mSize; x++)

        for(int y=0; y<mSize; y++)

          for(int z=0; z<mSize; z++)

            {

            if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )

              {

              mCubes[x][y][z].markForDeletion();

              mNodes[x][y][z].markForDeletion();

              }

            }

      }

    public void createTexture()

      {

      Bitmap bitmap;

      final int S = 128;

      final int W = 3*S;

      final int H = 2*S;

      final int R = S/10;

      final int M = S/20;

      Paint paint = new Paint();

      bitmap = Bitmap.createBitmap(W,H, Bitmap.Config.ARGB_8888);

      Canvas canvas = new Canvas(bitmap);

      paint.setAntiAlias(true);

      paint.setTextAlign(Paint.Align.CENTER);

      paint.setStyle(Paint.Style.FILL);

      // 3x2 bitmap = 6 squares:

      //

      // RED     GREEN   BLUE

      // YELLOW  WHITE   BROWN

      paint.setColor(0xff000000);                                  // BLACK BACKGROUND

      canvas.drawRect(0, 0, W, H, paint);                          //

      paint.setColor(0xffff0000);                                  // RED

      canvas.drawRoundRect(    M,   M,   S-M,   S-M, R, R, paint); //

      paint.setColor(0xff00ff00);                                  // GREEN

      canvas.drawRoundRect(  S+M,   M, 2*S-M,   S-M, R, R, paint); //

      paint.setColor(0xff0000ff);                                  // BLUE

      canvas.drawRoundRect(2*S+M,   M, 3*S-M,   S-M, R, R, paint); //

      paint.setColor(0xffffff00);                                  // YELLOW

      canvas.drawRoundRect(    M, S+M,   S-M, 2*S-M, R, R, paint); //

      paint.setColor(0xffffffff);                                  // WHITE

      canvas.drawRoundRect(  S+M, S+M, 2*S-M, 2*S-M, R, R, paint); //

      paint.setColor(0xffb5651d);                                  // BROWN

      canvas.drawRoundRect(2*S+M, S+M, 3*S-M, 2*S-M, R, R, paint); //

      mTexture.setTexture(bitmap);

      }

    public void recomputeScaleFactor(int screenWidth, int screenHeight)

      {

      int texW = mNodeTexture.getWidth();

      int texH = mNodeTexture.getHeight();

      if( (float)texH/texW > (float)screenHeight/screenWidth )

        {

        int w = (screenHeight*texW)/texH;

        float factor = (float)screenHeight/texH;

        mNodeMove.set((screenWidth-w)*0.5f ,0, 0);

        mNodeScale.set(factor,factor,factor);

        }

      else

        {

        int h = (screenWidth*texH)/texW;

        float factor = (float)screenWidth/texW;

        mNodeMove.set(0,(screenHeight-h)*0.5f,0);

        mNodeScale.set(factor,factor,factor);

        }

      float scaleFactor = (CUBE_SCREEN_RATIO*texW/(TEXTURE_SIZE*mSize));

      mMove.set( texW*0.5f , texH*0.5f , 0.0f );

      mScale.set(scaleFactor,scaleFactor,scaleFactor);

    public void apply(Effect effect, int position)

      {

      for(int x=0; x<mSize; x++)

        for(int y=0; y<mSize; y++)

          for(int z=0; z<mSize; z++)

            {

            if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )

              {

              mEffects[x][y][z].apply(effect, position);

              }

            }

    public void remove(long effectID)

      {

      for(int x=0; x<mSize; x++)

        for(int y=0; y<mSize; y++)

          for(int z=0; z<mSize; z++)

            {

            if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )

              {

              mEffects[x][y][z].abortById(effectID);

              }

            }

    public void solve()

      {

      for(int x=0; x<mSize; x++)

        for(int y=0; y<mSize; y++)

          for(int z=0; z<mSize; z++)

            if( x==0 || x==mSize-1 || y==0 || y==mSize-1 || z==0 || z==mSize-1 )

              {

              mQuatScramble[x][y][z].set(0,0,0,1);

              mCurrentPosition[x][y][z].set(x,y,z);

              }

      }

    public boolean isSolved()

      {

      Static4D q = mQuatScramble[0][0][0];

      float x = q.get0();

      float y = q.get1();

      float z = q.get2();

      float w = q.get3();

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

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

          for(int k = 0; k< mSize; k++)

            {

            if( i==0 || i==mSize-1 || j==0 || j==mSize-1 || k==0 || k==mSize-1 )

              {

              q = mQuatScramble[i][j][k];

              if( q.get0()!=x || q.get1()!=y || q.get2()!=z || q.get3()!=w )

                {

                return false;

                }

              }

            }

      return true;

      }

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

    public int getSize()

      {

      return mSize;

      }

    public long addNewRotation(int vector, int row, int angle, long durationMillis, EffectListener listener )

    public void removeRotationNow()