Distorted Android

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Paint;

import org.distorted.library.mesh.MeshBase;

import java.io.IOException;

import java.io.InputStream;

public class PredeformActivity extends Activity implements AdapterView.OnItemSelectedListener

  private int mNumCols;

  private int mNumRows;

  private int mNumSlic;

  private NumberPicker mColsPicker, mRowsPicker, mSlicPicker;

  private boolean[] mShape;

  private MeshBase mMesh;

    mNumCols = 1;

    mNumRows = 1;

    mNumSlic = 1;

    mBitmapID=-1;

    resetShape();

    setContentView(R.layout.object_picker_layout);

           mNumCols = newVal;

           resetShape();

           mNumRows = newVal;

           resetShape();

           mNumSlic = newVal;

           resetShape();

  private void resetShape()

    mShape = new boolean[mNumRows*mNumCols];

    for (int rows=0; rows<mNumRows; rows++)

      {

      for(int cols=0; cols<mNumCols; cols++)

        {

        mShape[rows*mNumCols+cols] = true;

        }

      }

    recreateObject();

    }

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

  MeshBase getMesh()

    {

    return mMesh;

    }

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

  Bitmap getBitmap()

    {

    return createBitmap(mBitmapID);

    }

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

  private void recreateObject()

    {

    String str = PredeformMeshList.getString(mObjectType, mNumCols, mNumRows, mShape);

    mMesh      = PredeformMeshList.createMesh(mObjectType, mNumCols, mNumRows, mNumSlic, mBitmapID, str);

    }

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

  private Bitmap createBitmap(int bitmapID)

    {

    int size = mNumCols > mNumRows ? (Math.max(mNumCols, mNumSlic)) : (Math.max(mNumRows, mNumSlic));

    if( bitmapID!=-1)

      {

      try (InputStream is = getResources().openRawResource(bitmapID))

        {

        return BitmapFactory.decodeStream(is);

        }

      catch( IOException ex ) { android.util.Log.e("act", "failed to open resource "+bitmapID); }

      }

    else

      final int T = 64;

      final int S = T*size;

      Paint paint = new Paint();

      Bitmap bmp = Bitmap.createBitmap(S,S, Bitmap.Config.ARGB_8888);

      Canvas canvas = new Canvas(bmp);

      paint.setAntiAlias(true);

      paint.setTextAlign(Paint.Align.CENTER);

      paint.setColor(0xff008800);

      paint.setStyle(Paint.Style.FILL);

      canvas.drawRect(0, 0, S, S, paint);

      paint.setColor(0xffffffff);

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

        canvas.drawRect( T*i-1, 0, T*i+1, S, paint);

        canvas.drawRect( 0, T*i-1, S, T*i+1, paint);

      return bmp;

    return null;

  void click(int row, int col)

      int id = row*mNumCols+col;

      recreateObject();

    if( mObjectType==0 )  // cubes

      for (int row=0; row<mNumRows; row++)

        for(int col=0; col<mNumCols; col++)

          mShape[row*mNumCols+col] = true;

      recreateObject();

                                              recreateObject();

                                            PredeformSurfaceView v = findViewById(R.id.predeformSurfaceView);

                                            v.getRenderer().setTexture( createBitmap(mBitmapID) );

    resetShape();

      GLSurfaceView mView = findViewById(R.id.predeform2SurfaceView);

      GLSurfaceView mView = findViewById(R.id.predeform2SurfaceView);

      Spinner renderSpinner = findViewById(R.id.predeform2SpinnerMode);

      mTextLevel = findViewById(R.id.predeform2InflateText);

      SeekBar transparencyBar = findViewById(R.id.predeform2Transparency);

      SeekBar inflateBar = findViewById(R.id.predeform2InflateLevel);

      PredeformSurfaceView2 v = findViewById(R.id.predeform2SurfaceView);

      PredeformRenderer2 renderer = v.getRenderer();

      if( parent.getId()==R.id.predeform2SpinnerMode)

        case R.id.predeform2Transparency: PredeformSurfaceView2 v1 = findViewById(R.id.predeform2SurfaceView);

                                          v1.getRenderer().setTransparency(progress);

                                          break;

        case R.id.predeform2InflateLevel: PredeformSurfaceView2 v2 = findViewById(R.id.predeform2SurfaceView);

                                          float level = v2.getRenderer().setLevel(progress);

                                          mTextLevel.setText(getString(R.string.inflate_placeholder, level));

                                          break;

import android.graphics.Bitmap;

    private static final float FOV =  0.0f;

      mTexture = new DistortedTexture();

    void setMesh(MeshBase mesh)

      mMesh = mesh;

    void setTexture(Bitmap bmp)

      mTexture.setTexture(bmp);

    public void onDrawFrame(GL10 glUnused) 

      mScreen.render( System.currentTimeMillis() );

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

      final float SCALE = 0.75f;

      float factor = ( width > height ) ? SCALE*height : SCALE*width;

      mScale.set(factor,factor,factor);

      mScreen.resize(width, height);

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

      mMesh = act.getMesh();

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

// 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.predeform;

import android.opengl.GLSurfaceView;

import org.distorted.library.effect.FragmentEffectAlpha;

import org.distorted.library.effect.MatrixEffectQuaternion;

import org.distorted.library.effect.MatrixEffectScale;

import org.distorted.library.effect.VertexEffectScale;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedScreen;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.mesh.MeshBase;

import org.distorted.library.type.DynamicQuat;

import org.distorted.library.type.Static1D;

import org.distorted.library.type.Static3D;

import org.distorted.library.type.Static4D;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

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

class PredeformRenderer2 implements GLSurfaceView.Renderer

{

    private static final float FOV = 30.0f;

    private static final float NEAR = 0.1f;

    private GLSurfaceView mView;

    private DistortedTexture mTexture;

    private DistortedEffects mEffects;

    private MeshBase mMesh;

    private DistortedScreen mScreen;

    private float mObjWidth, mObjHeight, mObjDepth;

    private Static3D mScale;

    private Static1D mAlpha;

    Static4D mQuat1, mQuat2;

    int mScreenMin;

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

    PredeformRenderer2(GLSurfaceView v)

      {

      mView = v;

      mAlpha = new Static1D(1.0f);

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

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

      PredeformActivity2 act = (PredeformActivity2)v.getContext();

      mTexture = act.getTexture();

      mMesh    = act.getMesh();

      mObjWidth = act.getCols();

      mObjHeight= act.getRows();

      mObjDepth = act.getSlic();

      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 VertexEffectScale(new Static3D(mObjWidth,mObjHeight,mObjDepth) ) );

      mEffects.apply( new MatrixEffectScale(mScale));

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

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

      mEffects.apply( new FragmentEffectAlpha(mAlpha));

      mScreen = new DistortedScreen();

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

      mScreen.setProjection(FOV, NEAR);

      }

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

    public void onDrawFrame(GL10 glUnused) 

      {

      mScreen.render( System.currentTimeMillis() );

      }

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

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

      {

      final float SCALE = 0.75f;

      mScreenMin = Math.min(width, height);

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

      mScale.set(factor,factor,factor);

      mScreen.resize(width, height);

      }

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

    void setRenderModeToOIT(boolean oit)

      {

      mScreen.setOrderIndependentTransparency(oit);

      }

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

    void setTransparency(int level)

      {

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

      }

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

    float setLevel(int level)

      {

      float inflateLevel = (level-50)/50.0f;

      mMesh.setInflate(inflateLevel);

      return inflateLevel;

      }

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

    public void onSurfaceCreated(GL10 glUnused, EGLConfig config) 

      {

      PredeformActivity2 act = (PredeformActivity2)mView.getContext();

      mTexture.setTexture( act.getBitmap() );

      mScreen.detachAll();

      mScreen.attach(mTexture,mEffects,mMesh);

      VertexEffectScale.enable();

      FragmentEffectAlpha.enable();

      try

        {

        DistortedLibrary.onCreate(act);

        }

      catch(Exception ex)

        {

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

        }

      }

}

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

// 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.predeform;

import android.app.ActivityManager;

import android.content.Context;

import android.content.pm.ConfigurationInfo;

import android.opengl.GLSurfaceView;

import android.util.AttributeSet;

import android.view.MotionEvent;

import android.widget.Toast;

import org.distorted.examples.R;

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

class PredeformSurfaceView2 extends GLSurfaceView

{

    private final static int DIRECTION_SENSITIVITY=  12;

    private int mX, mY;

    private PredeformRenderer2 mRenderer;

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

    public PredeformSurfaceView2(Context context, AttributeSet attrs)

      {

      super(context,attrs);

      mX = -1;

      mY = -1;

      if(!isInEditMode())

        {

        mRenderer = new PredeformRenderer2(this);

        final ActivityManager activityManager     = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);

        final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();

        setEGLContextClientVersion( (configurationInfo.reqGlEsVersion>>16) >= 3 ? 3:2 );

        setRenderer(mRenderer);

        Toast.makeText(context, R.string.example_rotate_toast , Toast.LENGTH_SHORT).show();

        }

      }

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

    public PredeformRenderer2 getRenderer()

      {

      return mRenderer;

      }

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

    private void resetQuats()

      {

      float qx = mRenderer.mQuat1.get0();

      float qy = mRenderer.mQuat1.get1();

      float qz = mRenderer.mQuat1.get2();

      float qw = mRenderer.mQuat1.get3();

      float rx = mRenderer.mQuat2.get0();

      float ry = mRenderer.mQuat2.get1();

      float rz = mRenderer.mQuat2.get2();

      float rw = mRenderer.mQuat2.get3();

      float tx = rw*qx - rz*qy + ry*qz + rx*qw;

      float ty = rw*qy + rz*qx + ry*qw - rx*qz;

      float tz = rw*qz + rz*qw - ry*qx + rx*qy;

      float tw = rw*qw - rz*qz - ry*qy - rx*qx;

      mRenderer.mQuat1.set(0f, 0f, 0f, 1f);

      mRenderer.mQuat2.set(tx, ty, tz, tw);

      }

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

    @Override public boolean onTouchEvent(MotionEvent event) 

      {

      int action = event.getAction();

      int x = (int)event.getX();

      int y = (int)event.getY();

      switch(action)

         {

         case MotionEvent.ACTION_DOWN: mX = x;

                                       mY = y;

                                       break;

         case MotionEvent.ACTION_MOVE: if( mX>=0 && mY>= 0 )

                                         {

                                         float px = mY-y;

                                         float py = mX-x;

                                         float pz = 0;

                                         float plen = (float)Math.sqrt(px*px + py*py + pz*pz);

                                         if( plen>0 )

                                           {

                                           px /= plen;

                                           py /= plen;

                                           pz /= plen;

                                           float cosA = (float)Math.cos(plen*3.14f/mRenderer.mScreenMin);

                                           float sinA = (float)Math.sqrt(1-cosA*cosA);

                                           mRenderer.mQuat1.set(px*sinA, py*sinA, pz*sinA, cosA);

                                           }

                                         }

                                       if( (mX-x)*(mX-x) + (mY-y)*(mY-y) > mRenderer.mScreenMin*mRenderer.mScreenMin/(DIRECTION_SENSITIVITY*DIRECTION_SENSITIVITY) )

                                         {

                                         mX = x;

                                         mY = y;

                                         resetQuats();

                                         }

                                       break;

         case MotionEvent.ACTION_UP  : mX = -1;

                                       mY = -1;

        	                             resetQuats();

                                       break;

         }

      return true;

      }

}

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

     android:orientation="vertical"

     android:layout_width="match_parent"

     android:layout_height="match_parent">

     <LinearLayout

           android:orientation="horizontal"

           android:layout_width="match_parent"

           android:layout_height="wrap_content">

           <Spinner

                android:layout_width="0dp"

                android:layout_height="50dp"

                android:layout_weight="0.5"

                android:id="@+id/objectpicker_spinnerType"

           />

           <Spinner

                   android:layout_width="0dp"

                   android:layout_height="50dp"

                   android:layout_weight="0.5"

                   android:id="@+id/objectpicker_spinnerBitmap"

           />

     </LinearLayout>

     <LinearLayout

           android:orientation="horizontal"

           android:layout_width="match_parent"

           android:layout_height="wrap_content">

           <NumberPicker

               android:id="@+id/objectpicker_rows"

               android:layout_width="wrap_content"

               android:layout_height="wrap_content"

               android:orientation="vertical"

               android:descendantFocusability="blocksDescendants"

           />

           <NumberPicker

               android:id="@+id/objectpicker_cols"

               android:layout_width="wrap_content"

               android:layout_height="wrap_content"

               android:orientation="vertical"

               android:descendantFocusability="blocksDescendants"

           />

           <NumberPicker

               android:id="@+id/objectpicker_slices"

               android:layout_width="wrap_content"

               android:layout_height="wrap_content"

               android:orientation="vertical"

               android:descendantFocusability="blocksDescendants"

           />

           <Button

               android:id="@+id/objectpicker_create"

               android:onClick="Create"

               android:text="@string/Create"

               android:layout_width="match_parent"

               android:layout_height="fill_parent"

           />

       </LinearLayout>

       <org.distorted.examples.predeform.PredeformSurfaceView

           android:id="@+id/predeformSurfaceView"

           android:layout_width="fill_parent"

           android:layout_height="0dp"

           android:layout_weight="0.80" />

</LinearLayout>

    <org.distorted.examples.predeform.PredeformSurfaceView2

        android:id="@+id/predeform2SurfaceView"

            android:id="@+id/predeform2InflateText"

            android:id="@+id/predeform2InflateLevel"

            android:id="@+id/predeform2Transparency"

            android:id="@+id/predeform2SpinnerMode"