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.vertex3d;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.opengl.GLES20;

import android.opengl.GLSurfaceView;

import org.distorted.examples.R;

import org.distorted.library.Distorted;

import org.distorted.library.DistortedBitmap;

import org.distorted.library.DistortedObject;

import org.distorted.library.EffectTypes;

import org.distorted.library.type.Dynamic3D;

import org.distorted.library.type.DynamicQuat;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import java.io.IOException;

import java.io.InputStream;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

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

class Vertex3DRenderer implements GLSurfaceView.Renderer

{

    private GLSurfaceView mView;

    private DistortedObject mObject;

    private DistortedBitmap mBackground;

    private DistortedBitmap mCenter;

    private int mObjWidth, mObjHeight;

    private DynamicQuat mQuatInt1, mQuatInt2;

    private Dynamic3D mMoveInter;

    private Static3D mMovePoint;

    private float mFactorObj;

    Static4D mQuat1, mQuat2;

    int mScreenMin;

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

    public Vertex3DRenderer(GLSurfaceView v)

      {

      mView = v;

      mObject     = ((Vertex3DActivity)v.getContext()).getObject();

      mBackground = new DistortedBitmap(100, 100, 1);

      mCenter     = new DistortedBitmap(100, 100, 1);

      mObjWidth = mObject.getWidth();

      mObjHeight= mObject.getHeight();

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

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

      mQuatInt1 = new DynamicQuat(0,0.5f);

      mQuatInt2 = new DynamicQuat(0,0.5f);

      mQuatInt1.add(mQuat1);

      mQuatInt2.add(mQuat2);

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

      mMoveInter= new Dynamic3D();

      mMoveInter.add(mMovePoint);

      }

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

    public void setCenter(float x, float y)

      {

      mMovePoint.set(mFactorObj*x,mFactorObj*y,0);

      }

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

    public void onDrawFrame(GL10 glUnused)

      {

      GLES20.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

      GLES20.glClear( GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);

      long time = System.currentTimeMillis();

      mBackground.draw(time);

      mObject.draw(time);

      mCenter.draw(time);

      }

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

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

      {

      mScreenMin = width<height ? width:height;

      mObject.abortEffects(EffectTypes.MATRIX);

      mBackground.abortEffects(EffectTypes.MATRIX);

      mCenter.abortEffects(EffectTypes.MATRIX);

      float factorCen;

      int centerSize = mCenter.getWidth();

      if( width*mObjHeight > height*mObjWidth ) // screen is more 'horizontal' than the Object

        {

        mFactorObj = (0.80f*height)/mObjHeight;

        factorCen  = (0.08f*height)/centerSize;

        }

      else

        {

        mFactorObj = (0.80f*width)/mObjWidth;

        factorCen  = (0.08f*width)/centerSize;

        }

      Vertex3DActivity act = (Vertex3DActivity)mView.getContext();

      mMovePoint.set(mFactorObj*act.getCenterX(),mFactorObj*act.getCenterY(),0);

      Static3D rotateObj = new Static3D(mObjWidth/2,mObjHeight/2, 0);

      mObject.move( new Static3D( (width-mFactorObj*mObjWidth)/2 , (height-mFactorObj*mObjHeight)/2 , 0) );

      mObject.scale(mFactorObj);

      mObject.quaternion(mQuatInt1, rotateObj);

      mObject.quaternion(mQuatInt2, rotateObj);

      Static3D rotateCen = new Static3D(width/2,height/2, 0);

      mCenter.quaternion(mQuatInt1, rotateCen);

      mCenter.quaternion(mQuatInt2, rotateCen);

      mCenter.move( new Static3D( (width -factorCen*centerSize-mFactorObj*mObjWidth )/2 ,

                                  (height-factorCen*centerSize-mFactorObj*mObjHeight)/2 , 10) );

      mCenter.move(mMoveInter);

      mCenter.scale(factorCen);

      int backgroundSize = mBackground.getWidth();

      float factorBackX = ((float)width)/backgroundSize;

      float factorBackY = ((float)height)/backgroundSize;

      mBackground.move(new Static3D( -width/2, -height/2,-mFactorObj*(mObjWidth+mObjHeight)/2) );

      mBackground.scale(new Static3D(2*factorBackX, 2*factorBackY, 1.0f) );

      Distorted.onSurfaceChanged(width, height);

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

      {

      Vertex3DActivity act = (Vertex3DActivity)mView.getContext();

      InputStream is1 = act.getResources().openRawResource(act.getBitmap());

      InputStream is2 = act.getResources().openRawResource(R.raw.water);

      InputStream is3 = act.getResources().openRawResource(R.raw.center);

      Bitmap bitmap1,bitmap2,bitmap3;

      try 

        {

        bitmap1 = BitmapFactory.decodeStream(is1);

        bitmap2 = BitmapFactory.decodeStream(is2);

        bitmap3 = BitmapFactory.decodeStream(is3);

        }

      finally 

        {

        try 

          {

          is1.close();

          is2.close();

          is3.close();

          } 

        catch(IOException e) { }

        }  

      mObject.setBitmap(bitmap1);

      mBackground.setBitmap(bitmap2);

      mCenter.setBitmap(bitmap3);

      try

        {

        Distorted.onSurfaceCreated(mView.getContext());

        }

      catch(Exception ex)

        {

        android.util.Log.e("Vertex3D", ex.getMessage() );

        }

      }

}