Distorted Android

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

// Copyright 2016 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.cubes;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

import org.distorted.examples.R;

import org.distorted.library.EffectTypes;

import org.distorted.library.type.DynamicQuat;

import org.distorted.library.DistortedCubes;

import org.distorted.library.type.Static4D;

import org.distorted.library.type.Static3D;

import org.distorted.library.Distorted;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLES20;

import android.opengl.GLSurfaceView;

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

class CubesRenderer implements GLSurfaceView.Renderer 

{

    private static final int SIZE = 100;

    private int mCols, mRows;

    private GLSurfaceView mView;

    private DistortedCubes mCubes;

    private DynamicQuat mQuatInt1, mQuatInt2;

    Static4D mQuat1, mQuat2;

    int mScreenMin;

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

    public CubesRenderer(GLSurfaceView v) 

      {

      mView = v;

      String shape = CubesActivity.getShape();

      mCols = CubesActivity.getCols();

      mRows = shape.length() / mCols;

      mCubes = new DistortedCubes( mCols, shape, SIZE);

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

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

      mQuatInt1 = new DynamicQuat(0,0.5f);

      mQuatInt2 = new DynamicQuat(0,0.5f);

      mQuatInt1.add(mQuat1);

      mQuatInt2.add(mQuat2);

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      GLES20.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

      GLES20.glClear( GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);

      mCubes.draw(System.currentTimeMillis());

      }

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

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

      {

      mScreenMin = width<height ? width:height;

      mCubes.abortEffects(EffectTypes.MATRIX);

      if( mRows/mCols > height/width )

        {

        int w = (height*mRows)/mCols;

        float factor = (float)height/(mRows*SIZE);

        mCubes.move( new Static3D((width-w)/2,0,0) );

        mCubes.scale(factor);

        }  

      else

        {   

        int h = (width*mRows)/mCols;

        float factor = (float)width/(mCols*SIZE);

        mCubes.move( new Static3D(0,(height-h)/2,0) );

        mCubes.scale(factor);

        }

      Static3D center = new Static3D(mCols*SIZE/2,mRows*SIZE/2, 0);

      mCubes.quaternion(mQuatInt1, center);

      mCubes.quaternion(mQuatInt2, center);

      Distorted.onSurfaceChanged(width, height); 

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

      InputStream is = mView.getContext().getResources().openRawResource(R.raw.grid);

      Bitmap bitmap;

      try 

        {

        bitmap = BitmapFactory.decodeStream(is);

        } 

      finally 

        {

        try 

          {

          is.close();

          } 

        catch(IOException e) { }

        }  

      mCubes.setBitmap(bitmap);

      try

        {

        Distorted.onSurfaceCreated(mView.getContext());

        }

      catch(Exception ex)

        {

        android.util.Log.e("Cubes", ex.getMessage() );

        }

      }

}