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.movingeffects;

import android.app.ActivityManager;

import android.content.Context;

import android.content.pm.ConfigurationInfo;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.graphics.Paint.Style;

import android.opengl.GLSurfaceView;

import android.view.MotionEvent;

import android.util.AttributeSet;

import org.distorted.library.effect.FragmentEffectAlpha;

import org.distorted.library.effect.FragmentEffectChroma;

import org.distorted.library.effect.VertexEffectDeform;

import org.distorted.library.effect.VertexEffectSink;

import org.distorted.library.effect.VertexEffectSwirl;

import org.distorted.library.type.Dynamic3D;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

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

public class MovingEffectsSurfaceView extends GLSurfaceView

    {

    private static final int LOOP_TIME = 5000;

    private static final int NUM_POINTS= 100;

    public static final int EFFECT_POINTS=0;

    public static final int EFFECT_BUBBLE=1;

    public static final int EFFECT_SINK  =2;

    public static final int EFFECT_TRANS =3;

    public static final int EFFECT_CHROMA=4;

    public static final int EFFECT_SWIRL =5;

    private static final Object lock = new Object();

    private Dynamic3D mCenter;

    private Paint mPaint;

    private int moving;

    private int mScrWidth, mScrHeight;

    private long mTime = 0;

    private int mCurrEffect;

    private int mSize1, mSize2;

    private Static3D mDeform;

    private Static1D mRadius;

    private MovingEffectsRenderer mRenderer;

    private VertexEffectDeform mEffectDeform;

    private VertexEffectSink mEffectSink;

    private VertexEffectSwirl mEffectSwirl;

    private FragmentEffectChroma mEffectChroma;

    private FragmentEffectAlpha mEffectAlpha;

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

    public MovingEffectsSurfaceView(Context context, AttributeSet attrs)

      {

      super(context, attrs);

      mCurrEffect=EFFECT_POINTS;

      mPaint = new Paint();

      mPaint.setStyle(Style.FILL);

      moving = -1;

      mCenter = new Dynamic3D(LOOP_TIME,0.0f);

      mDeform = new Static3D(0,0,0.15f);

      mRadius = new Static1D(0);

      if(!isInEditMode())

        {

        mRenderer = new MovingEffectsRenderer(this);

        setFocusable(true);

        setFocusableInTouchMode(true);

        final ActivityManager activityManager     = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);

        final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();

        setEGLContextClientVersion( (configurationInfo.reqGlEsVersion>>16) >= 3 ? 3:2 );

        setRenderer(mRenderer);

        Static3D regionFrag = new Static3D(0.15f,0.15f,0.15f);

        Static4D regionVert = new Static4D(0,0,0,0.15f);

        mEffectDeform  = new VertexEffectDeform  ( mDeform          , mRadius, mCenter, regionVert);

        mEffectSink    = new VertexEffectSink    (new Static1D(10)  , mCenter, regionVert);

        mEffectSwirl   = new VertexEffectSwirl   (new Static1D(30)  , mCenter, regionVert);

        mEffectAlpha   = new FragmentEffectAlpha (new Static1D(0.5f), mCenter, regionFrag, true);

        mEffectChroma  = new FragmentEffectChroma(new Static1D(0.5f), new Static3D(1,0,0), mCenter, regionFrag, true);

        }

      }

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

    public void onSurfaceChanged(int width,int height)

      {

      int max = Math.max(width, height);

      mScrWidth  = width;

      mScrHeight = height;

      mRadius.set(max/2);

      mSize1 = max/200;

      mSize2 = max/80;

      }

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

    public int getCurrentEffect()

      {

      return mCurrEffect;

      }

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

    public void Bubble()

      {

      if( mCurrEffect==EFFECT_BUBBLE ) return;     

      synchronized(lock)

        {

        mRenderer.apply(mEffectDeform);

        mCurrEffect = EFFECT_BUBBLE;

        }

      }

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

    public void Sink()

      {

      if( mCurrEffect==EFFECT_SINK ) return; 

      synchronized(lock)

        {

        mRenderer.apply(mEffectSink);

        mCurrEffect = EFFECT_SINK;

        }

      }

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

    public void Chroma()

      {

      if( mCurrEffect==EFFECT_CHROMA ) return;

      synchronized(lock)

        {

        mRenderer.apply(mEffectChroma);

        mCurrEffect = EFFECT_CHROMA;

        }

      }

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

    public void Transparency()

      {

      if( mCurrEffect==EFFECT_TRANS ) return;   

      synchronized(lock)

        {

        mRenderer.apply(mEffectAlpha);

        mCurrEffect = EFFECT_TRANS;

        }

      }

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

    public void Swirl()

      {

      if( mCurrEffect==EFFECT_SWIRL ) return;   

      synchronized(lock)

        {

        mRenderer.apply(mEffectSwirl);

        mCurrEffect = EFFECT_SWIRL;

        }

      }

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

    public void Abort()

      {

      synchronized(lock)

        {

        mRenderer.apply(null);

        mCenter.removeAll();

        mCenter.resetToBeginning();

        mCurrEffect = EFFECT_POINTS;

        mRenderer.setRefresh();

        }

      }

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

    public void drawCurve(Canvas c, long time)

      {

      synchronized(lock)

        {  

        int len = mCenter.getNumPoints();

        float[] drawCoord = new float[3];

        Static3D cu;

        if( len>=2 )

          {

          final float step = (float)LOOP_TIME/(NUM_POINTS+1);

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

            {

            mPaint.setColor( 0xffffffff );

            mCenter.get( drawCoord, 0, (long)(i*step), 0 );

            c.drawCircle( (drawCoord[0]+0.5f)*mScrWidth, 0.5f*mScrHeight-drawCoord[1]*mScrWidth, mSize1, mPaint );

            }

          }

        mPaint.setColor(0xffff0000);

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

          {       

          cu = mCenter.getPoint(curr);

          c.drawCircle( (cu.get0()+0.5f)*mScrWidth, 0.5f*mScrHeight-cu.get1()*mScrWidth, mSize2, mPaint);

          }

        if( time-mTime > LOOP_TIME ) mTime = time;

        }

      }

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

    @Override

    public boolean onTouchEvent(MotionEvent event)

      {

      if( mCurrEffect!=EFFECT_POINTS ) return true;   

      float xDown = event.getX()/mScrWidth - 0.5f;

      float yDown = (0.5f*mScrHeight - event.getY())/mScrWidth;

      switch(event.getAction())

        {

        case MotionEvent.ACTION_DOWN: float gx, gy;

                                      Static3D dv;

                                      int len = mCenter.getNumPoints();

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

                                        {

                                        dv = mCenter.getPoint(g);

                                        gx = dv.get0();

                                        gy = dv.get1();

                                        float Z = mDeform.get2()/7;

                                        if( (xDown-gx)*(xDown-gx) + (yDown-gy)*(yDown-gy) < Z*Z )

                                          {

                                          moving = g;

                                          break;

                                          }

                                        }

                                      if( moving<0 )

                                        {

                                        synchronized(lock)

                                          {

                                          mCenter.add(new Static3D(xDown,yDown,0));

                                          }

                                        }

                                      mRenderer.setRefresh();

                                      break;

        case MotionEvent.ACTION_MOVE: if( moving>=0 )

                                        {

                                        mCenter.setPoint(moving, xDown, yDown, 0);

                                        }

                                      mRenderer.setRefresh();

                                      break;

        case MotionEvent.ACTION_UP  : moving = -1;

                                      break;

        }

      return true;

      }

  }