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.flag;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLSurfaceView;

import org.distorted.examples.R;

import org.distorted.library.effect.MatrixEffectMove;

import org.distorted.library.effect.MatrixEffectQuaternion;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectWave;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.mesh.MeshCubes;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.type.Dynamic;

import org.distorted.library.type.Dynamic5D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import org.distorted.library.type.Static5D;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

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

class FlagRenderer implements GLSurfaceView.Renderer

{

    private GLSurfaceView mView;

    private DistortedTexture mTexture;

    private DistortedScreen mScreen;

    private Dynamic5D mWaveDyn;

    private Static5D mWaveSta1, mWaveSta2;

    private int mObjWidth, mObjHeight;

    private Static3D mMove, mScale, mCenter;

    Static4D mQuat1, mQuat2;

    int mScreenMin;

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

    FlagRenderer(GLSurfaceView v)

      {

      mView = v;

      mTexture = new DistortedTexture(500,300);

      mObjWidth = mTexture.getWidth();

      mObjHeight= mTexture.getHeight();

      mWaveDyn = new Dynamic5D(1000,0.0f);

      mWaveSta1= new Static5D(0,0,-180,0,0);  // all other values besides the

      mWaveSta2= new Static5D(0,0,+180,0,0);  // fourth will be set from the UI

      mWaveDyn.add(mWaveSta1);

      mWaveDyn.add(mWaveSta2);

      mWaveDyn.setMode(Dynamic.MODE_JUMP);

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

      mQuat2 = new Static4D(-0.25189602f,0.3546389f,0.009657208f,0.90038127f);  // something semi-random that looks good

      Static3D waveCenter = new Static3D(mObjWidth, mObjHeight/2, 0);  // middle of the right edge

      Static4D waveRegion = new Static4D(0,0,0,mObjWidth);

      DistortedEffects effects = new DistortedEffects();

      effects.apply( new VertexEffectWave(mWaveDyn, waveCenter, waveRegion) );

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

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

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

      effects.apply( new MatrixEffectQuaternion(mQuat2, mCenter) );

      effects.apply( new MatrixEffectQuaternion(mQuat1, mCenter) );

      effects.apply( new MatrixEffectScale(mScale));

      effects.apply( new MatrixEffectMove(mMove));

      final int GRIDX = 50;

      final int GRIDY = 30;

      final Static4D mapFB = new Static4D(0.0f,0.0f,1.0f      ,1.0f      );

      final Static4D mapLR = new Static4D(0.0f,0.0f,1.0f/GRIDX,1.0f      );

      final Static4D mapTB = new Static4D(0.0f,0.0f,1.0f      ,1.0f/GRIDY);

      mScreen = new DistortedScreen();

      mScreen.attach(mTexture, effects, new MeshCubes(GRIDX,GRIDY,1, mapFB, mapFB, mapLR, mapLR, mapTB, mapTB) );

      }

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

    void setAmplitude(int a)

      {

      mWaveSta1.set0(a);

      mWaveSta2.set0(a);

      }

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

    void setLength(int l)

      {

      mWaveSta1.set1(l);

      mWaveSta2.set1(l);

      }

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

    void setAngleA(int a)

      {

      mWaveSta1.set3(a);

      mWaveSta2.set3(a);

      }

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

    void setAngleB(int b)

      {

      mWaveSta1.set4(b);

      mWaveSta2.set4(b);

      }

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

    void setNoise(Static5D noise)

      {

      mWaveDyn.setNoise(noise);

      }

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

    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 ) ? (0.8f*height)/mObjHeight : (0.8f*width)/mObjWidth;

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

      mScale.set(factor,factor,factor);

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

      mScreen.resize(width, height);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

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

      Bitmap bitmap;

      try 

        {

        bitmap = BitmapFactory.decodeStream(is);

        } 

      finally 

        {

        try 

          {

          is.close();

          } 

        catch(IOException e) { }

        }  

      mTexture.setTexture(bitmap);

      VertexEffectWave.enable();

      try

        {

        DistortedLibrary.onCreate(mView.getContext());

        }

      catch(Exception ex)

        {

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

        }

      }

}