Distorted Android

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// 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.vertex3d;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLES20;

import android.opengl.GLSurfaceView;

import org.distorted.examples.R;

import org.distorted.library.Distorted;

import org.distorted.library.DistortedCubes;

import org.distorted.library.EffectNames;

import org.distorted.library.EffectTypes;

import org.distorted.library.type.Dynamic1D;

import org.distorted.library.type.Dynamic3D;

import org.distorted.library.type.Dynamic4D;

import org.distorted.library.type.DynamicQuat;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static2D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

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

class Vertex3DRenderer implements GLSurfaceView.Renderer

{

    private static final int SIZE = 100;

    private GLSurfaceView mView;

    private static DistortedCubes mCube;

    private int mCols, mRows;

    private DynamicQuat mQuatInt1, mQuatInt2;

    private static EffectNames[] order;

    private static Dynamic3D mDeformInter, mDistortInter;

    private static Dynamic1D mSinkInter, mSwirlInter;

    private static Static2D mCenterPoint;

    private static Static3D mDeformPoint, mDistortPoint;

    private static Static1D mSinkPoint, mSwirlPoint;

    Static4D mQuat1, mQuat2;

    static int mScreenMin;

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

    public static void setDeform(float x, float y, float z)

      {

      mDeformPoint.set(x, y, z);

      }

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

    public static void setDistort(float x, float y, float z)

      {

      mDistortPoint.set(x, y, z);

      }

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

    public static void setSink(float s)

      {

      mSinkPoint.set(s);

      }

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    public static void setSwirl(float s)

      {

      mSwirlPoint.set(s);

      }

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

    public static void setOrder(EffectNames[] effects)

      {

      order = effects;

      setVertexEffects();

      }

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

    public static void setVertexEffects()

      {

      mCube.abortEffects(EffectTypes.VERTEX);

      for( int i=0; i<=order.length-1 ; i++ )

        {

        switch(order[i])

          {

          case DEFORM : mCube.deform( mDeformInter , mCenterPoint) ; break;

          case DISTORT: mCube.distort(mDistortInter, mCenterPoint) ; break;

          case SINK   : mCube.sink(   mSinkInter   , mCenterPoint) ; break;

          case SWIRL  : mCube.swirl(  mSwirlInter  , mCenterPoint) ; break;

          }

        }

      }

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

    public Vertex3DRenderer(GLSurfaceView v)

      {

      mView = v;

      String shape = Vertex3DActivity.getShape();

      mCols = Vertex3DActivity.getCols();

      mRows = shape.length() / mCols;

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

      mCenterPoint = new Static2D(0,0);

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

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

      mSwirlPoint  = new Static1D(0);

      mSinkPoint   = new Static1D(1);

      mDeformInter  = new Dynamic3D();

      mDistortInter = new Dynamic3D();

      mSwirlInter   = new Dynamic1D();

      mSinkInter    = new Dynamic1D();

      mDeformInter.add(mDeformPoint);

      mDistortInter.add(mDistortPoint);

      mSwirlInter.add(mSwirlPoint);

      mSinkInter.add(mSinkPoint);

      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);

      mCube.draw(System.currentTimeMillis());

      }

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

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

      {

      mScreenMin = width<height ? width:height;

      mCube.abortEffects(EffectTypes.MATRIX);

      float factor;

      if( width*mRows > height*mCols ) // screen is more 'horizontal' than the shape

        {

        factor = ((float)height)/((mRows+2)*SIZE);

}

      else

        {

        factor = ((float)width)/((mCols+2)*SIZE);

        }

      mCube.move( new Static3D( (width-factor*mCols*SIZE)/2 , (height-factor*mRows*SIZE)/2 , 0) );

      mCube.scale(factor);

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

      mCube.quaternion(mQuatInt1, center);

      mCube.quaternion(mQuatInt2, center);

      setVertexEffects();

      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) { }

        }  

      mCube.setBitmap(bitmap);

      try

        {

        Distorted.onSurfaceCreated(mView.getContext());

        }

      catch(Exception ex)

        {

        android.util.Log.e("Vertex3D", ex.getMessage() );

        }

      }

}