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/>.                            //

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package org.distorted.examples.check;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

import org.distorted.examples.R;

import org.distorted.library.Distorted;

import org.distorted.library.DistortedEffects;

import org.distorted.library.DistortedScreen;

import org.distorted.library.DistortedTexture;

import org.distorted.library.EffectNames;

import org.distorted.library.MeshFlat;

import org.distorted.library.EffectTypes;

import org.distorted.library.type.Dynamic3D;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import org.distorted.library.type.Dynamic1D;

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLES30;

import android.opengl.GLSurfaceView;

import android.util.Log;

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

class CheckRenderer implements GLSurfaceView.Renderer 

{

    private static String compilationResult;

    private static String compilationTitle;

    private GLSurfaceView mView;

    private DistortedEffects mEffects;

    private DistortedTexture mTexture;

    private DistortedScreen mScreen;

    private int bmpHeight, bmpWidth;

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

    CheckRenderer(GLSurfaceView view)

      { 

      mView = view;

      mEffects = new DistortedEffects();

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

      DistortedEffects.setMaxVertex(act.getMaxV());

      DistortedEffects.setMaxFragment(act.getMaxF());

      mScreen = new DistortedScreen();

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

      { 

      float qx = (float)width /bmpWidth;

      float qy = (float)height/bmpHeight;

      mEffects.abortEffects(EffectTypes.MATRIX);

      mEffects.scale(  qx<qy ? (new Static3D(1,qx/qy,1)) : (new Static3D(qy/qx,1,1)) );

      mScreen.resize(width, height);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {  

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

      Bitmap bitmap;

      try

        {

        bitmap = BitmapFactory.decodeStream(is);

        } 

      finally 

        {

        try 

          {

          is.close();

          } 

        catch(IOException e) { }

        }

      bmpHeight = bitmap.getHeight();

      bmpWidth  = bitmap.getWidth();

      if( mTexture==null ) mTexture = new DistortedTexture(bmpWidth,bmpHeight);

      mTexture.setTexture(bitmap);

      mScreen.detachAll();

      mScreen.attach(mTexture,mEffects,new MeshFlat(30,30*bmpHeight/bmpWidth));

      mEffects.abortEffects(EffectTypes.VERTEX);

      mEffects.abortEffects(EffectTypes.FRAGMENT);

      // Try adding 2 Vertex Effects to the Bitmap.

      // This will fail if we have set maxVertexEffects to something < 2.

      //

      // Even if adding some of the Effects fails, the App will still start - you just won't see

      // the effects that failed to add.

      Dynamic3D dSwirl = new Dynamic3D(2000,0.0f);

      dSwirl.add(new Static3D(        0, bmpHeight/2, 0));

      dSwirl.add(new Static3D( bmpWidth, bmpHeight/2, 0));

      long swirlEffectID = mEffects.swirl( new Static1D(30), dSwirl, new Static4D( 0,0,40,40) );

      if( swirlEffectID<0 )

        {

        Log.e("Check", "Failed to add Swirl effect!");

        }

      Dynamic3D dDeform = new Dynamic3D(2000,0.0f);

      dDeform.add(new Static3D( 0,         0,0));

      dDeform.add(new Static3D( 0,-bmpHeight,0));

      long deformEffectID = mEffects.deform(dDeform, new Static3D(bmpWidth/2,0,0) );

      if( deformEffectID<0 )

        {

        Log.e("Check", "Failed to add Deform effect!");

        }

      // Now try adding 1 Fragment Effect. Likewise, will fail if maxFragmentEffects is <1.

      Static3D color = new Static3D(1,0,0);

      Dynamic1D inter = new Dynamic1D(2000,0.0f);

      inter.add(new Static1D(0));

      inter.add(new Static1D(1));

      long chromaEffectID = mEffects.chroma(inter, color);

      if( chromaEffectID<0 )

        {

        Log.e("Check", "Failed to add Chroma effect!");

        }

      DistortedEffects.enableEffect(EffectNames.SWIRL);

      DistortedEffects.enableEffect(EffectNames.DEFORM);

      DistortedEffects.enableEffect(EffectNames.CHROMA);

      try

        {

        Distorted.onCreate(mView.getContext());

        }

      catch(Exception ex)

        {

        // We have failed to compile or link shaders - probably too many effects.

        // (each effect adds a certain number of Uniforms to the shader and there

        // can only be a limited number of those )

        compilationTitle = ex.getClass().getSimpleName();

        compilationResult= ex.getMessage();

        String ver;

        ver = GLES30.glGetString(GLES30.GL_SHADING_LANGUAGE_VERSION);   

        compilationResult += "\n\nGLSL version: "+(ver==null ? "null" : ver);

        ver = GLES30.glGetString(GLES30.GL_VERSION);  

        compilationResult += "\nGL version: "+(ver==null ? "null" : ver);

        ver = GLES30.glGetString(GLES30.GL_VENDOR);   

        compilationResult += "\nGL vendor: "+(ver==null ? "null" : ver);

        ver = GLES30.glGetString(GLES30.GL_RENDERER);    

        compilationResult += "\nGL renderer: "+(ver==null ? "null" : ver);

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

        act.runOnUiThread(new Runnable() 

          {

          public void run() 

            {

            Context context = mView.getContext();

            AlertDialog.Builder builder = new AlertDialog.Builder(context);

            builder.setTitle(compilationTitle);

            builder.setMessage(compilationResult);

            builder.setCancelable(true);

            builder.setOnCancelListener(new DialogInterface.OnCancelListener() 

              {

              @Override

              public void onCancel(DialogInterface dialog) 

                {

                ((CheckActivity)mView.getContext()).finish();

                }

              });

            AlertDialog alert = builder.create();

            alert.show();

            }

          });

        }

      }

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

}