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.cubes;

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.FragmentEffectAlpha;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectQuaternion;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.mesh.MeshObject;

import org.distorted.library.type.DynamicQuat;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static4D;

import org.distorted.library.type.Static3D;

import org.distorted.library.main.Distorted;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLSurfaceView;

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

class CubesRenderer implements GLSurfaceView.Renderer 

{

    private GLSurfaceView mView;

    private DistortedTexture mTexture;

    private DistortedEffects mEffects;

    private MeshObject mMesh;

    private DistortedScreen mScreen;

    private int mObjWidth, mObjHeight, mObjDepth;

    private Static3D mMove, mScale, mCenter;

    private Static1D mAlpha;

    Static4D mQuat1, mQuat2;

    int mScreenMin;

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

    CubesRenderer(GLSurfaceView v)

      {

      mView = v;

      mAlpha = new Static1D(1.0f);

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

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

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

      CubesActivity act = (CubesActivity)v.getContext();

      mTexture = act.getTexture();

      mMesh = act.getMesh();

      mObjWidth = mTexture.getWidth();

      mObjHeight= mTexture.getHeight();

      mObjDepth = mTexture.getDepth(mMesh);

      mQuat1 = new Static4D(0,0,0,1);  // unity

      mQuat2 = new Static4D(0,0,0,1);  // quaternions

      DynamicQuat quatInt1 = new DynamicQuat(0,0.5f);

      DynamicQuat quatInt2 = new DynamicQuat(0,0.5f);

      quatInt1.add(mQuat1);

      quatInt2.add(mQuat2);

      mEffects = new DistortedEffects();

      mEffects.apply( new MatrixEffectMove(mMove) );

      mEffects.apply( new MatrixEffectScale(mScale));

      mEffects.apply( new MatrixEffectQuaternion(quatInt1, mCenter) );

      mEffects.apply( new MatrixEffectQuaternion(quatInt2, mCenter) );

      mEffects.apply( new FragmentEffectAlpha(mAlpha));

      mScreen = new DistortedScreen();

      mScreen.glClearColor(1.0f,1.0f,1.0f,0.0f);

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

      {

      mScreenMin = width<height ? width:height;

      float factor = ( width*mObjHeight > height*mObjWidth ) ? (0.75f*height)/mObjHeight :  (0.75f*width)/mObjWidth;

      mMove.set( (width-factor*mObjWidth)/2 , (height-factor*mObjHeight)/2 , 0);

      mScale.set(factor,factor,factor);

      mCenter.set( (float)mObjWidth/2, (float)mObjHeight/2, -(float)mObjDepth/2 );

      mScreen.resize(width, height);

      }

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

    void setRenderModeToOIT(boolean oit)

      {

      mScreen.setOrderIndependentTransparency(oit);

      }

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

    void setTransparency(int level)

      {

      mAlpha.set((float)level/100.0f);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

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

      Bitmap bitmap;

      try 

        {

        bitmap = BitmapFactory.decodeStream(is);

        } 

      finally 

        {

        try 

          {

          is.close();

          } 

        catch(IOException e) { }

        }  

      mTexture.setTexture(bitmap);

      mScreen.detachAll();

      mScreen.attach(mTexture,mEffects,mMesh);

      FragmentEffectAlpha.enable();

      try

        {

        Distorted.onCreate(mView.getContext());

        }

      catch(Exception ex)

        {

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

        }

      }

}