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.effectqueue;

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.GLSurfaceView;

import org.distorted.library.effect.FragmentEffectAlpha;

import org.distorted.library.effect.FragmentEffectChroma;

import org.distorted.library.effect.FragmentEffectSaturation;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectDistort;

import org.distorted.library.effect.VertexEffectSink;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.mesh.MeshRectangles;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.message.EffectListener;

import org.distorted.library.type.Static3D;

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

class EffectQueueRenderer implements GLSurfaceView.Renderer, EffectListener, DistortedLibrary.ExceptionListener

  {

  private static final int NUMLINES =  10;

  private static final int MESH_QUALITY = 100;

  static final int BWID = 600;

  static final int BHEI = 600;

  private EffectQueueSurfaceView mView;

  private Paint mPaint;

  private int texWidth, texHeight;

  private Static3D mScale;

  private DistortedTexture mTexture;

  private MeshRectangles mMesh;

  private DistortedEffects mEffects;

  private DistortedScreen mScreen;

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

  EffectQueueRenderer(EffectQueueSurfaceView v)

    {    

    mPaint = new Paint();

    mPaint.setAntiAlias(true);

    mPaint.setFakeBoldText(true);

    mPaint.setStyle(Style.FILL);

    mView = v;

    texWidth = BWID;

    texHeight= BHEI;

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

    MatrixEffectScale scaleEffect = new MatrixEffectScale(mScale);

    mMesh = new MeshRectangles(MESH_QUALITY,MESH_QUALITY*texHeight/texWidth);

    mTexture = new DistortedTexture();

    mEffects = new DistortedEffects();

    mEffects.apply(scaleEffect);

    mScreen = new DistortedScreen();

    }

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

  DistortedEffects getEffects()

    {

    return mEffects;

    }

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

  public void onDrawFrame(GL10 glUnused)

    {

    mScreen.render( System.currentTimeMillis() );

    }

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

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

    {

    // (w+h)/2 because we need to stretch more or less uniformly in all 3 directions.

    // If we set it to 0, Distort would not be shaded. If we set it to 1, the Distorted normal

    // vectors would get stretched only in X and Y dirs, becoming very 'flat' and the Distorted

    // area very dark.

    mScale.set(width, height, (width+height)*0.5f);

    mScreen.resize(width,height);

    mView.setScreenSize(width,height);

    }

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

  public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

    {

    Bitmap bitmap = Bitmap.createBitmap(texWidth,texHeight, Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(bitmap);

    mPaint.setColor(0xff008800);

    canvas.drawRect(0, 0, texWidth, texHeight, mPaint);

    mPaint.setColor(0xffffffff);

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

      {

      canvas.drawRect(texWidth*i/NUMLINES-1,                      0, texWidth*i/NUMLINES+1, texHeight             , mPaint);

      canvas.drawRect(                    0, texHeight*i/NUMLINES-1, texWidth             , texHeight*i/NUMLINES+1, mPaint);

      }

    mTexture.setTexture(bitmap);

    mScreen.detachAll();

    mScreen.attach(mTexture,mEffects,mMesh);

    VertexEffectDistort.enable();

    VertexEffectSink.enable();

    FragmentEffectAlpha.enable();

    FragmentEffectChroma.enable();

    FragmentEffectSaturation.enable();

    DistortedLibrary.onCreate(mView.getContext(), this);

    }

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

  public void distortedException(Exception ex)

    {

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

    }

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

  public void effectFinished(final long effectID)

    {

    EffectQueueActivity act = (EffectQueueActivity)mView.getContext();

    act.effectFinished(effectID);

    }

  }