Distorted Android

        <activity android:name=".glow.GlowActivity"/>

import org.distorted.examples.glow.GlowActivity;

   {

      item.put(ITEM_TITLE, (i+1)+". "+getText(R.string.example_glow));

      item.put(ITEM_SUBTITLE, getText(R.string.example_glow_subtitle));

      data.add(item);

      activityMapping.put(i++, GlowActivity.class);

   }

   {

      final Map<String, Object> item = new HashMap<>();

      item.put(ITEM_IMAGE, R.drawable.icon_example_movingglow);

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

// 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.glow;

import android.app.Activity;

import android.opengl.GLSurfaceView;

import android.os.Bundle;

import android.widget.SeekBar;

import android.widget.TextView;

import org.distorted.examples.R;

import org.distorted.library.main.Distorted;

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

public class GlowActivity extends Activity implements SeekBar.OnSeekBarChangeListener

{

    private TextView textGlow;

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

    @Override

    protected void onCreate(Bundle savedState)

      {

      super.onCreate(savedState);

      setContentView(R.layout.glowlayout);

      textGlow = (TextView)findViewById(R.id.glowText);

      SeekBar bar = (SeekBar)findViewById(R.id.glowSeek);

      bar.setOnSeekBarChangeListener(this);

      bar.setProgress(50);

      }

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

    @Override

    protected void onPause() 

      {

      GLSurfaceView view = (GLSurfaceView) this.findViewById(R.id.glowSurfaceView);

      view.onPause();

      Distorted.onPause();

      super.onPause();

      }

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

    @Override

    protected void onResume() 

      {

      super.onResume();

      GLSurfaceView view = (GLSurfaceView) this.findViewById(R.id.glowSurfaceView);

      view.onResume();

      }

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

    @Override

    protected void onDestroy() 

      {

      Distorted.onDestroy();  

      super.onDestroy();

      }

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

    public void onProgressChanged(SeekBar bar, int progress, boolean fromUser)

      {

      GlowSurfaceView view = (GlowSurfaceView) this.findViewById(R.id.glowSurfaceView);

      switch (bar.getId())

        {

        case R.id.glowSeek: int level = view.getRenderer().setGlow(progress);

                            textGlow.setText(getString(R.string.glow_placeholder,level));

                            break;

        }

      }

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

    public void onStartTrackingTouch(SeekBar bar) { }

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

    public void onStopTrackingTouch(SeekBar bar)  { }

}

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

// 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.glow;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLSurfaceView;

import org.distorted.examples.R;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.PostprocessEffectGlow;

import org.distorted.library.main.Distorted;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.main.MeshFlat;

import org.distorted.library.type.Static1D;

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 GlowRenderer implements GLSurfaceView.Renderer

{

   private static final int LEAF_SIZE = 100;

   private GLSurfaceView mView;

   private DistortedTexture mLeaf;

   private DistortedScreen mScreen;

   private int mRootW, mRootH;

   private Static3D mMove, mScale;

   private Static1D mRadius;

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

   GlowRenderer(GLSurfaceView v)

      {     

      mView = v;

      mRootW = LEAF_SIZE;

      mRootH = LEAF_SIZE;

      mLeaf  = new DistortedTexture(LEAF_SIZE,LEAF_SIZE);

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

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

      mRadius= new Static1D(25);

      Static4D color = new Static4D(1.0f,1.0f,0.0f,0.5f); // half-transparent yellow

      DistortedEffects effects = new DistortedEffects();

      effects.apply(new MatrixEffectMove(mMove));

      effects.apply(new MatrixEffectScale(mScale));

      effects.apply(new PostprocessEffectGlow(mRadius,color));

      mScreen = new DistortedScreen();

      mScreen.attach(mLeaf, effects, new MeshFlat(1,1) );

      }

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

   int setGlow(int glow)

     {

     int radius = glow/2;

     mRadius.set(radius);

     return radius;

     }

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

   public void onDrawFrame(GL10 glUnused)

     {

     mScreen.render(System.currentTimeMillis());

     }

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

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

     {

     float qw = (float)width /mRootW;

     float qh = (float)height/mRootH;

     float factor = 0.5f* (qw<qh ? qw:qh);

     int w = (int)(factor*mRootW);

     int h = (int)(factor*mRootH);

     mMove.set((width-w)/2 ,(height-h)/2, 0);

     mScale.set( factor,factor,factor );

     mScreen.resize(width, height);

     }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

     {

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

     Bitmap leaf;

     try

       {

       leaf = BitmapFactory.decodeStream(is);

       }

     finally

       {

       try

         {

         is.close();

         }

       catch(IOException e) { }

       }

     mLeaf.setTexture(leaf);

     PostprocessEffectGlow.enable();

     try

       {

       Distorted.onCreate(mView.getContext());

       }

     catch(Exception ex)

       {

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

       }

     }

}

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

// 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.glow;

import android.app.ActivityManager;

import android.content.Context;

import android.content.pm.ConfigurationInfo;

import android.opengl.GLSurfaceView;

import android.util.AttributeSet;

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

class GlowSurfaceView extends GLSurfaceView

{

  private GlowRenderer mRenderer;

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

  public GlowSurfaceView(Context context, AttributeSet attrs)

      {

      super(context, attrs);

      if(!isInEditMode())

        {

        mRenderer = new GlowRenderer(this);

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

        final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();

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

        setRenderer(mRenderer);

        }

      }

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

  GlowRenderer getRenderer()

    {

    return mRenderer;

    }

}

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <org.distorted.examples.glow.GlowSurfaceView

        android:id="@+id/glowSurfaceView"

        android:layout_width="fill_parent"

        android:layout_height="0dp"

        android:layout_weight="1" />

    <LinearLayout

        android:id="@+id/linearLayout1"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:gravity="center|fill_horizontal"

        android:orientation="horizontal" >

        <TextView

                android:id="@+id/glowText"

                android:layout_width="150dp"

                android:layout_height="wrap_content"

                android:layout_weight="0.5"

                android:gravity="center_vertical|center"

                android:text="@string/glow"

                android:textAppearance="?android:attr/textAppearanceMedium" />

        <SeekBar

                android:id="@+id/glowSeek"

                android:layout_width="fill_parent"

                android:layout_height="wrap_content"

                android:layout_weight="1"

                android:paddingLeft="15dp"

                android:paddingRight="10dp" />

    </LinearLayout>

</LinearLayout>

    <string name="glow">Glow</string>

    <string name="glow_placeholder">Glow: %1$d</string>

    <string name="example_glow">Glowing Leaf</string>

    <string name="example_glow_subtitle">Leaf glowing with light.</string>