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 javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.graphics.Paint.Style;

import android.opengl.GLES20;

import android.opengl.GLSurfaceView;

import org.distorted.library.DistortedFramebuffer;

import org.distorted.library.DistortedTexture;

import org.distorted.library.DistortedEffects;

import org.distorted.library.MeshFlat;

import org.distorted.library.Distorted;

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

class MovingEffectsRenderer implements GLSurfaceView.Renderer

   {  

   private MovingEffectsSurfaceView mView;

   private Canvas mCanvas;

   private Bitmap mBitmap;

   private Paint mPaint;

   private int texW, texH;

   private MeshFlat mMesh;

   private DistortedEffects mEffects;

   private DistortedTexture mTexture;

   private DistortedFramebuffer mScreen;

   private boolean mRefresh;

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

   MovingEffectsRenderer(MovingEffectsSurfaceView v)

     {    

     mPaint = new Paint();

     mPaint.setAntiAlias(true);

     mPaint.setFakeBoldText(true);

     mPaint.setStyle(Style.FILL);

     mView   = v;

     mEffects= new DistortedEffects();

     mScreen = new DistortedFramebuffer(0);

     mRefresh= true;

     }

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

   private void drawBackground()

     {

     int NW, NH;

     if( texH<texW )

       {

       NH = 10;

       NW = NH*texW/texH;

       }

     else

       {

       NW = 10;

       NH = NW*texH/texW;

       }

     mPaint.setColor(0xff008800);

     mCanvas.drawRect(0, 0, texW, texH, mPaint);

     mPaint.setColor(0xffffffff);

     for(int i=0; i<=NH ; i++ ) mCanvas.drawRect( 0, texH*i/NH -2,  texW,  texH*i/NH + 2, mPaint);

     for(int i=0; i<=NW ; i++ ) mCanvas.drawRect( texW*i/NW - 2, 0, texW*i/NW + 2,  texH, mPaint);

     }

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

   DistortedEffects getEffects()

     {

     return mEffects;

     }

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

   void setRefresh()

     {

     mRefresh = true;

     }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

     {

     try

       {

       Distorted.onCreate(mView.getContext());

       }

     catch(Exception ex)

       {

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

       }

     }

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

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

     {

     texW = width;

     texH = height;

     mMesh = new MeshFlat(80,80*texH/texW);

     mTexture = new DistortedTexture(texW,texH);

     mBitmap  = Bitmap.createBitmap(texW,texH, Bitmap.Config.ARGB_8888);

     mCanvas  = new Canvas(mBitmap);

     mScreen.resize(texW, texH);

     mView.onSurfaceChanged(texW,texH);

     mRefresh = true;

     }

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

   public void onDrawFrame(GL10 glUnused)

     {   

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

     long time = System.currentTimeMillis();

     if (mView.getCurrentEffect() == MovingEffectsSurfaceView.EFFECT_POINTS && mRefresh )

       {

       drawBackground();

       mView.drawCurve(mCanvas,time);

       mTexture.setTexture(mBitmap);

       mRefresh = false;

       }

     mScreen.renderTo(mTexture, mMesh, mEffects, time );

     }

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

}