Magic Cube

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Paint;

import org.distorted.library.main.QuatHelper;

import org.distorted.objectlib.helpers.FactoryCubit;

import static org.distorted.objectlib.main.TwistyObject.COLOR_BLUE;

import static org.distorted.objectlib.main.TwistyObject.COLOR_GREEN;

import static org.distorted.objectlib.main.TwistyObject.COLOR_ORANGE;

import static org.distorted.objectlib.main.TwistyObject.COLOR_RED;

import static org.distorted.objectlib.main.TwistyObject.COLOR_WHITE;

import static org.distorted.objectlib.main.TwistyObject.COLOR_YELLOW;

    private static Bitmap mBitmap;

    private static Static4D[] mTextureMaps;

    private static float[] mTmp = new float[4];

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

    private static void createBitmap()

      {

      final int[] FACE_COLORS = new int[]

         {

           COLOR_YELLOW, COLOR_WHITE,

           COLOR_BLUE  , COLOR_GREEN,

           COLOR_RED   , COLOR_ORANGE

         };

      final int NUM = FACE_COLORS.length;

      final int SIZE= 32;

      mTextureMaps = new Static4D[NUM];

      Paint paint = new Paint();

      paint.setStyle(Paint.Style.FILL);

      mBitmap = Bitmap.createBitmap( NUM*SIZE, SIZE, Bitmap.Config.ARGB_4444);

      Canvas canvas = new Canvas(mBitmap);

      for(int color=0; color<NUM; color++)

        {

        paint.setColor(FACE_COLORS[color]);

        canvas.drawRect(color*SIZE, 0, (color+1)*SIZE, SIZE, paint);

        mTextureMaps[color] = new Static4D( ((float)color)/NUM, 0.0f, 1.0f/NUM, 1.0f );

        }

      }

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

// (x,y,z) ==

//

// ( 1,0,0) --> 0

// (-1,0,0) --> 1

// (0, 1,0) --> 2

// (0,-1,0) --> 3

// (0,0, 1) --> 4

// (0,0,-1) --> 5

    private int computeMapsIndex(float x, float y, float z)

      {

      int ix = x>0 ? (int)(x+0.5f) : (int)(x-0.5f);

      int iy = y>0 ? (int)(y+0.5f) : (int)(y-0.5f);

      int iz = z>0 ? (int)(z+0.5f) : (int)(z-0.5f);

      if( ix== 1 ) return 0;

      if( ix==-1 ) return 1;

      if( iy== 1 ) return 2;

      if( iy==-1 ) return 3;

      if( iz== 1 ) return 4;

      if( iz==-1 ) return 5;

      return 0;

      }

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

    private void resetTextureMaps(MeshBase mesh)

      {

      FactoryCubit fact = FactoryCubit.getInstance();

      int numComponents = mesh.getNumTexComponents();

      Static4D[] maps = new Static4D[numComponents];

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

        {

        Static4D q = fact.getQuaternion(i);

        QuatHelper.rotateVectorByQuat(mTmp,0,0,1,0,q);

        int index = computeMapsIndex(mTmp[0], mTmp[1], mTmp[2]);

        maps[i] = mTextureMaps[index];

        }

      mesh.setTextureMap(maps,0);

      }

      if( mBitmap==null ) createBitmap();

      mTexture.setTextureAlreadyInverted(mBitmap);

      resetTextureMaps(mesh);

      resetTextureMaps(mesh);

   //   mTexture.setColorARGB(color);