Magic Cube

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// Copyright 2022 Leszek Koltunski                                                               //

//                                                                                               //

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

//                                                                                               //

// Magic Cube 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.                                                           //

//                                                                                               //

// Magic Cube 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 Magic Cube.  If not, see <http://www.gnu.org/licenses/>.                           //

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package org.distorted.bandaged;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

import android.opengl.GLSurfaceView;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedNode;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

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

public class BandagedCreatorRenderer implements GLSurfaceView.Renderer, DistortedLibrary.ExceptionListener

{

   private final GLSurfaceView mView;

   private final DistortedScreen mScreen;

   private final Static3D mScale;

   private final Static3D[] mMove;

   private final float[][] POSITIONS = new float[][]

        {

          {-1.0f, +1.0f, +1.0f},

          {-1.0f, +1.0f, +0.0f},

          {-1.0f, +1.0f, -1.0f},

          {-1.0f,  0.0f, +1.0f},

          {-1.0f,  0.0f, +0.0f},

          {-1.0f,  0.0f, -1.0f},

          {-1.0f, -1.0f, +1.0f},

          {-1.0f, -1.0f, +0.0f},

          {-1.0f, -1.0f, -1.0f},

          { 0.0f, -1.0f, +1.0f},

          { 0.0f, -1.0f, +0.0f},

          { 0.0f, +1.0f, +1.0f},

          { 0.0f, +1.0f, +0.0f},

          { 0.0f, +1.0f, -1.0f},

          { 0.0f,  0.0f, +1.0f},

          { 0.0f,  0.0f, -1.0f},

          { 1.0f, +1.0f, +1.0f},

          { 1.0f, +1.0f, +0.0f},

          { 1.0f, +1.0f, -1.0f},

          { 1.0f,  0.0f, +1.0f},

          { 1.0f,  0.0f, +0.0f},

          { 1.0f, -1.0f, +1.0f},

          { 1.0f,  0.0f, -1.0f },

          { 1.0f, -1.0f, -1.0f },

          { 1.0f, -1.0f, +0.0f },

          { 0.0f, -1.0f, -1.0f },

        };

   Static4D mQuat1, mQuat2;

   int mScreenMin;

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

   BandagedCreatorRenderer(BandagedCreatorView v)

     {

     final float BRIGHTNESS = 0.333f;

     mQuat1 = new Static4D(0,0,0,1);

     mQuat2 = new Static4D(0,0,0,1);

     mView = v;

     mScreen = new DistortedScreen();

     mScreen.glClearColor(BRIGHTNESS, BRIGHTNESS, BRIGHTNESS, 1.0f);

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

     int len = POSITIONS.length;

     mMove = new Static3D[len];

     for(int i=0; i<len; i++) mMove[i] = new Static3D(0,0,0);

     BandagedCubit[] cubits = createCubits();

     }

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

   private BandagedCubit[] createCubits()

     {

     int len = POSITIONS.length;

     BandagedCubit[] cubits = new BandagedCubit[len];

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

       {

       computeMove(mMove[c],POSITIONS[c]);

       cubits[c] = new BandagedCubit(POSITIONS[c],mQuat1,mQuat2,mMove[c],mScale);

       DistortedNode node = cubits[c].getNode();

       mScreen.attach(node);

       }

     return cubits;

     }

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

    private void computeMove(Static3D move, float[] position)

      {

      int numCenters = position.length/3;

      float totalX=0.0f, totalY=0.0f, totalZ=0.0f;

      for(int center=0; center<numCenters; center++)

        {

        totalX += position[3*center  ];

        totalY += position[3*center+1];

        totalZ += position[3*center+2];

        }

      totalX /= numCenters;

      totalY /= numCenters;

      totalZ /= numCenters;

      move.set(totalX,totalY,totalZ);

      }

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

   @Override

   public void onDrawFrame(GL10 glUnused)

     {

     long time = System.currentTimeMillis();

     mScreen.render(time);

     }

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

   @Override

   public void onSurfaceChanged(GL10 glUnused, int width, int height)

      {

      final float Q = 0.15f;

      float scale = width<height ? Q*width : Q*height;

      int len = POSITIONS.length;

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

        {

        float x = mMove[i].get0();

        float y = mMove[i].get1();

        float z = mMove[i].get2();

        mMove[i].set(x*scale,y*scale,z*scale);

        }

      mScale.set( scale,scale,scale );

      mScreenMin = Math.min(width, height);

      mScreen.resize(width,height);

      }

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

   @Override

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

      {

      DistortedLibrary.onSurfaceCreated(mView.getContext(),this,1);

      }

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

   public void distortedException(Exception ex)

     {

     android.util.Log.e("CREATOR", "unexpected exception: "+ex.getMessage() );

     }

}