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.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.effect.EffectType;

import org.distorted.library.effect.FragmentEffectChroma;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectDeform;

import org.distorted.library.effect.VertexEffectSwirl;

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.mesh.MeshFlat;

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.GLES31;

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 MeshFlat mMesh;

    private DistortedScreen mScreen;

    private int mObjHeight, mObjWidth;

    private Static3D mMove, mScale, mCenter;

    private Static3D mSwirl1, mSwirl2, mDeform1, mDeform2;

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

    CheckRenderer(GLSurfaceView view)

      { 

      mView = view;

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

      DistortedEffects.setMax(EffectType.VERTEX  ,act.getMaxV());

      DistortedEffects.setMax(EffectType.FRAGMENT,act.getMaxF());

      VertexEffectSwirl.enable();

      VertexEffectDeform.enable();

      FragmentEffectChroma.enable();

      mSwirl1 = new Static3D(0,0,0);

      mSwirl2 = new Static3D(0,0,0);

      mDeform1= new Static3D(0,0,0);

      mDeform2= new Static3D(0,0,0);

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

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

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

      mEffects = new DistortedEffects();

      mEffects.apply(new MatrixEffectMove(mMove));

      mEffects.apply(new MatrixEffectScale(mScale));

      // 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(mSwirl1);

      dSwirl.add(mSwirl2);

      if( !mEffects.apply( new VertexEffectSwirl(new Static1D(30), dSwirl, new Static4D( 0,0,0,40)) ) )

        {

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

        }

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

      dDeform.add(mDeform1);

      dDeform.add(mDeform2);

      if( !mEffects.apply( new VertexEffectDeform(dDeform,mCenter) ) )

        {

        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));

      if( !mEffects.apply( new FragmentEffectChroma(inter, color) ) )

        {

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

        }

      mScreen = new DistortedScreen();

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

      {

      final float SCALE = 0.9f;

      float xW = (float)width /mObjWidth;

      float xH = (float)height/mObjHeight;

      float factor = xW>xH ? SCALE*xH : SCALE*xW;

      mMove.set( (width-factor*mObjWidth)/2 , (height-factor*mObjHeight)/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.success);

      Bitmap bitmap;

      try

        {

        bitmap = BitmapFactory.decodeStream(is);

        } 

      finally 

        {

        try 

          {

          is.close();

          } 

        catch(IOException e) { }

        }

      mObjHeight = bitmap.getHeight();

      mObjWidth  = bitmap.getWidth();

      if( mTexture==null ) mTexture = new DistortedTexture(mObjWidth,mObjHeight);

      mTexture.setTexture(bitmap);

      if( mMesh==null ) mMesh = new MeshFlat(30,30*mObjHeight/mObjWidth);

      mScreen.detachAll();

      mScreen.attach(mTexture,mEffects,mMesh);

      mSwirl1.set (          0, mObjHeight/2, 0);

      mSwirl2.set (mObjWidth  , mObjHeight/2, 0);

      mDeform1.set(          0,         0   , 0);

      mDeform2.set(          0, mObjHeight  , 0);

      mCenter.set (mObjWidth/2,         0   , 0);

      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 = GLES31.glGetString(GLES31.GL_SHADING_LANGUAGE_VERSION);

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

        ver = GLES31.glGetString(GLES31.GL_VERSION);

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

        ver = GLES31.glGetString(GLES31.GL_VENDOR);

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

        ver = GLES31.glGetString(GLES31.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();

            }

          });

        }

      }

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

}