Distorted Android

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

// Copyright 2019 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Distorted.                                                               //

//                                                                                               //

// Distorted is free software: you can redistribute it and/or modify                             //

// it under the terms of the GNU General Public License as published by                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Distorted is distributed in the hope that it will be useful,                                  //

// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //

// GNU General Public License for more details.                                                  //

//                                                                                               //

// You should have received a copy of the GNU General Public License                             //

// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //

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

package org.distorted.examples.rubik;

import java.util.Random;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Paint;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectQuaternion;

import org.distorted.library.effect.MatrixEffectRotate;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectSink;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedNode;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.mesh.MeshCubes;

import org.distorted.library.message.EffectListener;

import org.distorted.library.type.Dynamic1D;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

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

class RubikCube

{

    private static final int VECTX = 0;

    private static final int VECTY = 1;

    private static final int VECTZ = 2;

    private static final int ROTATION_MILLISEC = 1500;

    private static final int STRETCH_SIZE = 100;

    private static final Static3D VectX = new Static3D(1,0,0);

    private static final Static3D VectY = new Static3D(0,1,0);

    private static final Static3D VectZ = new Static3D(0,0,1);

    private static Random mRnd = new Random(0);

    private DistortedNode[][][] mNodes;

    private MeshCubes[][][] mCubes;

    private DistortedEffects[][][] mEffects;

    private Static3D[][][] mRotationAxis;

    private Dynamic1D[][][] mRotationAngle;

    private MatrixEffectRotate[][][] mRotate;

    private DistortedTexture mTexture;

    private int mSize;

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

    RubikCube(int size, Static3D move, Static3D scale)

      {

      mSize = size;

      mTexture = new DistortedTexture();

      mNodes          = new DistortedNode[mSize][mSize][mSize];

      mCubes          = new MeshCubes[mSize][mSize][mSize];

      mEffects        = new DistortedEffects[mSize][mSize][mSize];

      mRotationAxis   = new Static3D[mSize][mSize][mSize];

      mRotationAngle  = new Dynamic1D[mSize][mSize][mSize];

      mRotate         = new MatrixEffectRotate[mSize][mSize][mSize];

      Static3D[][][] cubeVectors = new Static3D[mSize][mSize][mSize];

      Static3D center = new Static3D(STRETCH_SIZE*0.5f, STRETCH_SIZE*0.5f, STRETCH_SIZE*0.5f);

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

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

      MatrixEffectMove        moveEffect = new MatrixEffectMove(move);

      MatrixEffectScale      scaleEffect = new MatrixEffectScale(scale);

      MatrixEffectQuaternion  quatEffect = new MatrixEffectQuaternion( initializeQuat(), center);

      // 3x2 bitmap = 6 squares:

      //

      // RED     GREEN   BLUE

      // YELLOW  WHITE   BROWN

      final float ze = 0.0f;

      final float ot = 1.0f/3.0f;

      final float tt = 2.0f/3.0f;

      final float oh = 1.0f/2.0f;

      final float of = 1.0f/40.0f;

      final Static4D mapFront = new Static4D(ze,oh, ze+ot,oh+oh);

      final Static4D mapBack  = new Static4D(tt,ze, tt+ot,ze+oh);

      final Static4D mapLeft  = new Static4D(ot,ze, ot+ot,ze+oh);

      final Static4D mapRight = new Static4D(ze,ze, ze+ot,ze+oh);

      final Static4D mapTop   = new Static4D(tt,oh, tt+ot,oh+oh);

      final Static4D mapBottom= new Static4D(ot,oh, ot+ot,oh+oh);

      final Static4D mapBlack = new Static4D(ze,ze, ze+of,ze+of);

      Static4D tmpFront, tmpBack, tmpLeft, tmpRight, tmpTop, tmpBottom;

      float nc = 0.5f*(mSize-1);

      int vertices = (int)(24.0f/mSize + 2.0f);

      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 ) // only the external walls

              {

              tmpLeft  = (x==       0 ? mapLeft  :mapBlack);

              tmpRight = (x== mSize-1 ? mapRight :mapBlack);

              tmpFront = (z== mSize-1 ? mapFront :mapBlack);

              tmpBack  = (z==       0 ? mapBack  :mapBlack);

              tmpTop   = (y== mSize-1 ? mapTop   :mapBlack);

              tmpBottom= (y==       0 ? mapBottom:mapBlack);

              mCubes[x][y][z]           = new MeshCubes(vertices,vertices,vertices, tmpFront, tmpBack, tmpLeft, tmpRight, tmpTop, tmpBottom);

              mCubes[x][y][z].setStretch(STRETCH_SIZE,STRETCH_SIZE,STRETCH_SIZE);

              cubeVectors[x][y][z]      = new Static3D( STRETCH_SIZE*(x-nc), STRETCH_SIZE*(y-nc), STRETCH_SIZE*(z-nc) );

              mRotationAngle[x][y][z]   = new Dynamic1D();

              mRotationAxis[x][y][z]    = new Static3D(1,0,0);

              mRotationAngle[x][y][z].add(new Static1D(0.0f));

              mRotationAngle[x][y][z].add(new Static1D(0.0f));

              mRotate[x][y][z] = new MatrixEffectRotate( mRotationAngle[x][y][z], mRotationAxis[x][y][z], center);

              mEffects[x][y][z] = new DistortedEffects();

              mEffects[x][y][z].apply( new MatrixEffectMove(cubeVectors[x][y][z]) );

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

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

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

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

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

              }

            }

      }

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

// Initial rotation of the cube. Something semi-random that looks good.

   private Static4D initializeQuat()

     {

     return new Static4D(-0.25189602f,0.3546389f,0.009657208f,0.90038127f);

     }

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

   void attachToScreen(DistortedScreen screen)

     {

     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 )

             {

             mNodes[x][y][z] = new DistortedNode(mTexture,mEffects[x][y][z],mCubes[x][y][z]);

             screen.attach(mNodes[x][y][z]);

             }

           }

     }

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

// all DistortedTextures, DistortedNodes, DistortedFramebuffers, DistortedScreens and all types of

// Meshes HAVE TO be markedForDeletion when they are no longer needed- otherwise we have a major

// memory leak.

   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();

             }

           }

     }

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

   void addRotation(EffectListener listener)

     {

     mRnd.setSeed(System.currentTimeMillis());

     int vector = mRnd.nextInt(3);

     int rotRow = mRnd.nextInt(mSize);

     boolean first = true;

     Static3D axis = VectX;

     switch(vector)

       {

       case VECTX: axis = VectX; break;

       case VECTY: axis = VectY; break;

       case VECTZ: axis = VectZ; break;

       }

     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,rotRow) )

               {

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

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

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

               mRotationAngle[x][y][z].setPoint(1,90.0f);

               if( first )

                 {

                 first = false;

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

                 }

               }

             }

     }

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

   private boolean belongsToRotation(int x, int y, int z, int vector, int row)

     {

     switch(vector)

       {

       case VECTX: return x==row;

       case VECTY: return y==row;

       case VECTZ: return z==row;

       }

     return false;

     }

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

   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;

       }

     }

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

   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);

     }

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

   float getStretchSize()

     {

     return STRETCH_SIZE;

     }

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

   int getSize()

     {

     return mSize;

     }

}