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.deform;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

import org.distorted.library.effect.EffectName;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.MatrixEffectShear;

import org.distorted.library.effect.VertexEffectDeform;

import org.distorted.library.effect.VertexEffectDistort;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.mesh.MeshBase;

import org.distorted.library.mesh.MeshRectangles;

import org.distorted.library.message.EffectListener;

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 android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.graphics.Paint.Style;

import android.opengl.GLSurfaceView;

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

class DeformRenderer implements GLSurfaceView.Renderer, EffectListener, DistortedLibrary.ExceptionListener

   {

   private static final int NUM_VECTORS =  8;

   private static final int NUM_LINES   = 10;

   private GLSurfaceView mView;

   private DistortedTexture mTexture;

   private DistortedEffects mEffects;

   private MeshBase mMesh;

   private DistortedScreen mScreen;

   private Static3D mTouchPoint, mScale;

   private Static3D[] vDistort;

   private Static3D[] vDeform;

   private Static3D[] vShear;

   private Static4D mRegion;

   private int scrHeight, scrWidth;

   private int textureWidth, textureHeight;

   private float mRadius;

   private EffectName mMode = EffectName.DISTORT;

   private long mLastEffect = -1;

   private MatrixEffectShear mMovingShear, mReleasedShear;

   private VertexEffectDistort mMovingDistort, mReleasedDistort;

   private VertexEffectDeform mMovingDeform, mReleasedDeform;

   private Dynamic3D mReleasedDistortDynamic, mReleasedDeformDynamic, mReleasedShearDynamic;

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

   DeformRenderer(GLSurfaceView view)

      { 

      mView = view;

      mTexture    = new DistortedTexture();

      mEffects    = new DistortedEffects();

      mRegion     = new Static4D(0,0,0,0);

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

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

      mEffects.apply( new MatrixEffectScale(mScale) );

      // DISTORT

      mReleasedDistortDynamic = new Dynamic3D(NUM_VECTORS*500, 0.5f);

      mReleasedDistortDynamic.setMode(Dynamic3D.MODE_PATH);

      Dynamic3D movingDistortDynamic = new Dynamic3D(0,0.5f);

      movingDistortDynamic.setMode(Dynamic3D.MODE_PATH);

      vDistort = new Static3D[NUM_VECTORS];

      for(int i=0; i<NUM_VECTORS; i++)

        {

        vDistort[i] = new Static3D(0,0,0);

        mReleasedDistortDynamic.add(vDistort[i]);

        }

      movingDistortDynamic.add(vDistort[0]);

      // Deform

      mReleasedDeformDynamic = new Dynamic3D(NUM_VECTORS*500, 0.5f);

      mReleasedDeformDynamic.setMode(Dynamic3D.MODE_PATH);

      Dynamic3D movingDeformDynamic = new Dynamic3D(0,0.5f);

      movingDeformDynamic.setMode(Dynamic3D.MODE_PATH);

      vDeform = new Static3D[NUM_VECTORS];

      for(int i=0; i<NUM_VECTORS; i++)

        {

        vDeform[i] = new Static3D(0,0,0);

        mReleasedDeformDynamic.add(vDeform[i]);

        }

      movingDeformDynamic.add(vDeform[0]);

      // Shear

      mReleasedShearDynamic = new Dynamic3D(NUM_VECTORS*500, 0.5f);

      mReleasedShearDynamic.setMode(Dynamic3D.MODE_PATH);

      Dynamic3D movingShearDynamic = new Dynamic3D(0,0.5f);

      movingShearDynamic.setMode(Dynamic3D.MODE_PATH);

      vShear = new Static3D[NUM_VECTORS];

      for(int i=0; i<NUM_VECTORS; i++)

        {

        vShear[i] = new Static3D(0,0,0);

        mReleasedShearDynamic.add(vShear[i]);

        }

      movingShearDynamic.add(vShear[0]);

      mScreen = new DistortedScreen();

      mScreen.showFPS();

      Static1D deformRadius = new Static1D(0.5f);

      mMovingDistort   = new VertexEffectDistort( movingDistortDynamic   ,               mTouchPoint, mRegion);

      mMovingDeform    = new VertexEffectDeform ( movingDeformDynamic    , deformRadius, mTouchPoint, mRegion);

      mMovingShear     = new MatrixEffectShear  ( movingShearDynamic     ,               mTouchPoint         );

      mReleasedDistort = new VertexEffectDistort( mReleasedDistortDynamic,               mTouchPoint, mRegion);

      mReleasedDeform  = new VertexEffectDeform ( mReleasedDeformDynamic , deformRadius, mTouchPoint, mRegion);

      mReleasedShear   = new MatrixEffectShear  ( mReleasedShearDynamic  ,               mTouchPoint         );

      }

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

   void setMode(EffectName mode)

      {

      mMode = mode;  

      }

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

   void setRegionRadius(int r)

      {

      mRadius = ( r==100 ? 100.0f : r/100.0f);

      mRegion.set3(mRadius);

      }

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

// keep aborting the 'released' effects, otherwise we are quickly going to run out of room in

// effect queues.

   public void effectFinished(final long effectID)

     {

     mEffects.abortById(effectID);

     }

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

   public void onDrawFrame(GL10 glUnused)

     {

     mScreen.render(System.currentTimeMillis());

     }

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

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

     {

     scrHeight = height;

     scrWidth  = width;

     mRegion.set3(mRadius);

     Canvas stretchCanvas;

     textureWidth = (int)(0.6f*width);

     textureHeight= (int)(0.6f*height);

     if( mMesh!=null ) mMesh.markForDeletion();

     mMesh = new MeshRectangles(50,50*textureHeight/textureWidth);

     mScale.set(textureWidth,textureHeight,1);

     Bitmap stretchBitmap = Bitmap.createBitmap(textureWidth,textureHeight, Bitmap.Config.ARGB_8888);

     stretchCanvas = new Canvas(stretchBitmap);

     Paint paint = new Paint();

     paint.setColor(0xff008800);

     paint.setStyle(Style.FILL);

     stretchCanvas.drawRect(0, 0, textureWidth, textureHeight, paint);

     paint.setColor(0xffffffff);

     for(int i=0; i<=NUM_LINES ; i++ )

       {

       stretchCanvas.drawRect(textureWidth*i/NUM_LINES-1,                           0, textureWidth*i/NUM_LINES+1, textureHeight              , paint);

       stretchCanvas.drawRect(                         0, textureHeight*i/NUM_LINES-1, textureWidth              , textureHeight*i/NUM_LINES+1, paint);

       }

     mTexture.setTexture(stretchBitmap);

     mScreen.detachAll();

     mScreen.attach(mTexture,mEffects,mMesh);

     mScreen.resize(width, height);

     }

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

   public void onSurfaceCreated(GL10 glUnused, EGLConfig config)

     {

     VertexEffectDistort.enable();

     VertexEffectDeform.enable();

     DistortedLibrary.onCreate(mView.getContext(),this);

     }

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

   public void distortedException(Exception ex)

     {

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

     }

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

   void down(int x, int y)

     {

     float xt = (float)x/scrWidth-0.5f;

     float yt = 0.5f-(float)y/scrHeight;

     switch(mMode)

       {

       case DISTORT: vDistort[0].set(0,0,0);

                     mEffects.apply(mMovingDistort);

                     mLastEffect = mMovingDistort.getID();

                     mTouchPoint.set(xt,yt,0);

                     break;

       case DEFORM : vDeform[0].set(0,0,0);

                     mEffects.apply(mMovingDeform);

                     mLastEffect = mMovingDeform.getID();

                     mTouchPoint.set(xt,yt,0);

                     break;

       case SHEAR  : vShear[0].set(0,0,0);

                     mEffects.apply(mMovingShear);

                     mLastEffect = mMovingShear.getID();

                     mTouchPoint.set(xt,yt,0);

                     break;

       }

     }

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

   void move(int x, int y)

     {

     float xm = (float)x/textureWidth;

     float ym = (float)y/textureHeight;

     switch(mMode)

       {

       case DISTORT: vDistort[0].set( xm,-ym, 0);

                     break;

       case DEFORM:  vDeform[0].set ( xm,-ym, 0);

                     break;

       case SHEAR:   vShear[0].set  ( xm,-ym, 0);

                     break;

       }

     }

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

   void up()

     {

     mEffects.abortById(mLastEffect);

     final float DAMP = -0.65f;

     switch(mMode)

       {

       case DISTORT: for(int i=1; i<NUM_VECTORS-1; i++)

                       {

                       vDistort[i].set( vDistort[i-1].get0()*DAMP, vDistort[i-1].get1()*DAMP, 0 );

                       }

                     vDistort[NUM_VECTORS-1].set(0,0,0);

                     mEffects.apply(mReleasedDistort);

                     mReleasedDistortDynamic.resetToBeginning();

                     mReleasedDistort.notifyWhenFinished(this);

                     break;

       case DEFORM : for(int i=1; i<NUM_VECTORS-1; i++)

                       {

                       vDeform[i].set( vDeform[i-1].get0()*DAMP, vDeform[i-1].get1()*DAMP, 0 );

                       }

                     vDeform[NUM_VECTORS-1].set(0,0,0);

                     mEffects.apply(mReleasedDeform);

                     mReleasedDeformDynamic.resetToBeginning();

                     mReleasedDeform.notifyWhenFinished(this);

                     break;

       case SHEAR  : for(int i=1; i<NUM_VECTORS-1; i++)

                       {

                       vShear[i].set( vShear[i-1].get0()*DAMP, vShear[i-1].get1()*DAMP, 0 );

                       }

                     vShear[NUM_VECTORS-1].set(0,0,0);

                     mEffects.apply(mReleasedShear);

                     mReleasedShearDynamic.resetToBeginning();

                     mReleasedShear.notifyWhenFinished(this);

                     break;

       }

     }

   }