Distorted Android

        <activity android:name=".predeform.PredeformActivity"/>

        <activity android:name=".predeform.PredeformActivity2"/>

import org.distorted.examples.predeform.PredeformActivity;

    PREDEFORM         (R.drawable.icon_example_wip             , R.string.example_predeform           , R.string.example_predeform_subtitle           ,            PredeformActivity.class),

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

// 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.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.Gravity;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.LinearLayout;

import android.widget.NumberPicker;

import android.widget.Spinner;

import android.widget.TableRow;

import org.distorted.examples.R;

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

public class PredeformActivity extends Activity

                               implements View.OnClickListener, AdapterView.OnItemSelectedListener

  {

  private static final int COLOR_OFF = 0xffffe81f;

  private static final int COLOR_ON  = 0xff0000ff;

  private static final int COLOR_INAC= 0xff999999;

  private int mNumCols = 1;

  private int mNumRows = 1;

  private int mNumSlic = 1;

  private boolean mGridInitialized;

  private NumberPicker mColsPicker, mRowsPicker, mSlicPicker;

  private boolean[] mShape;

  private int mObjectType;

  private int mBitmapID;

  private LinearLayout mLay;

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

  @Override

  protected void onCreate(Bundle savedState)

    {

    super.onCreate(savedState);

    setContentView(R.layout.objectpickerlayout);

    mLay = findViewById(R.id.objectpicker_buttongrid);

    mColsPicker = findViewById(R.id.objectpicker_cols);

    mRowsPicker = findViewById(R.id.objectpicker_rows);

    mSlicPicker = findViewById(R.id.objectpicker_slices);

    mColsPicker.setMaxValue(40);

    mColsPicker.setMinValue( 1);

    mRowsPicker.setMaxValue(40);

    mRowsPicker.setMinValue( 1);

    mSlicPicker.setMaxValue(40);

    mSlicPicker.setMinValue( 0);

    mColsPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener()

         {

         @Override

         public void onValueChange(NumberPicker picker, int oldVal, int newVal)

           {

           setGrid();

           }

         });

    mRowsPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener()

         {

         @Override

         public void onValueChange(NumberPicker picker, int oldVal, int newVal)

           {

           setGrid();

           }

         });

    mSlicPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener()

         {

         @Override

         public void onValueChange(NumberPicker picker, int oldVal, int newVal)

           {

           mNumSlic = mSlicPicker.getValue();

           }

         });

    mObjectType = 0;

    mGridInitialized = false;

    Spinner typeSpinner  = findViewById(R.id.objectpicker_spinnerType);

    typeSpinner.setOnItemSelectedListener(this);

    String[] objectType = new String[PredeformMeshList.LENGTH];

    for(int mesh = 0; mesh< PredeformMeshList.LENGTH; mesh++)

      {

      objectType[mesh] = "Mesh: "+ PredeformMeshList.getName(mesh);

      }

    ArrayAdapter<String> adapterType = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, objectType);

    adapterType.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    typeSpinner.setAdapter(adapterType);

    Spinner bitmapSpinner  = findViewById(R.id.objectpicker_spinnerBitmap);

    bitmapSpinner.setOnItemSelectedListener(this);

    String[] objectBitmap = new String[] { "Texture: Grid", "Texture: Girl", "Texture: Dog", "Texture: Cat",

                                           "Texture: Squares", "Texture: Bean", "Texture: Lisa", "Texture: World" };

    ArrayAdapter<String> adapterBitmap = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, objectBitmap);

    adapterBitmap.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    bitmapSpinner.setAdapter(adapterBitmap);

    }

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

  private void setGrid()

    {

    mGridInitialized = true;

    mNumCols = mColsPicker.getValue();

    mNumRows = mRowsPicker.getValue();

    int width = mLay.getWidth();

    int height= mLay.getHeight();

    int w = mNumCols>0 ? (int)( 0.9f*width / mNumCols) : 0;

    int h = mNumRows>0 ? (int)( 0.9f*height/ mNumRows) : 0;

    int size= Math.min(w, h);

    int pad = size<20 ? 1 : size/20;

    mLay.removeAllViews();

    mShape = new boolean[mNumRows*mNumCols];

    TableRow.LayoutParams p = new TableRow.LayoutParams();

    p.rightMargin  = pad;

    p.leftMargin   = pad;

    p.topMargin    = pad;

    p.bottomMargin = pad;

    p.height       = size;

    p.width        = size;

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

      {

      TableRow tr = new TableRow(this);

      tr.setGravity(Gravity.CENTER);

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

        {

        Button b = new Button(this);

        b.setOnClickListener(this);

        b.setId(rows*mNumCols+cols);

        b.setLayoutParams(p);

        b.setBackgroundColor(mObjectType==0 ? COLOR_ON:COLOR_INAC);

        tr.addView(b, p);

        mShape[rows*mNumCols+cols] = true;

        }

      mLay.addView(tr);

      }

    }

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

  public void onClick(View view)

    {

    if( mObjectType==0 )  // cubes

      {

      Button tmp = (Button)view;

      int id = tmp.getId();

      mShape[id] = !mShape[id];

      tmp.setBackgroundColor(mShape[id] ? COLOR_ON:COLOR_OFF);

      }

    }

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

  private void uncheckAll()

    {

    TableRow tr;

    Button butt;

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

      {

      tr = (TableRow)mLay.getChildAt(row);

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

        {

        butt = (Button)tr.getVirtualChildAt(col);

        butt.setBackgroundColor(mObjectType==0 ? COLOR_ON : COLOR_INAC);

        mShape[row*mNumCols+col] = true;

        }

      }

    }

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

  public void Create(View v)

    {

    Intent mainInt = new Intent( getApplicationContext(), PredeformActivity2.class);

    Bundle b = new Bundle();

    b.putInt("type"  , mObjectType);

    b.putInt("cols"  , PredeformMeshList.getCols(mObjectType, mNumCols, mNumRows, mNumSlic) );

    b.putInt("rows"  , PredeformMeshList.getRows(mObjectType, mNumCols, mNumRows, mNumSlic) );

    b.putInt("slices", PredeformMeshList.getSlic(mObjectType, mNumCols, mNumRows, mNumSlic) );

    b.putInt("bitmap", mBitmapID);

    b.putString("string", PredeformMeshList.getString(mObjectType, mNumCols, mNumRows, mShape));

    mainInt.putExtras(b);

    startActivity(mainInt);

    }

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

  public void onItemSelected(AdapterView<?> parent, View view, int pos, long id)

    {

    switch(parent.getId())

      {

      case R.id.objectpicker_spinnerType  : if( mObjectType!=pos )

                                              {

                                              mObjectType = pos;

                                              uncheckAll();

                                              int dim = PredeformMeshList.getDimension(mObjectType);

                                              mRowsPicker.setEnabled(dim>=1);

                                              mColsPicker.setEnabled(dim>=2);

                                              mSlicPicker.setEnabled(dim>=3);

                                              }

                                            break;

      case R.id.objectpicker_spinnerBitmap: switch(pos)

                                              {

                                              case 0: mBitmapID = -1            ; break;

                                              case 1: mBitmapID = R.raw.face    ; break;

                                              case 2: mBitmapID = R.raw.dog     ; break;

                                              case 3: mBitmapID = R.raw.cat     ; break;

                                              case 4: mBitmapID = R.raw.grid    ; break;

                                              case 5: mBitmapID = R.raw.bean    ; break;

                                              case 6: mBitmapID = R.raw.monalisa; break;

                                              case 7: mBitmapID = R.raw.world   ; break;

                                              }

                                            break;

      }

    }

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

  public void onNothingSelected(AdapterView<?> parent)

    {

    }

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

// Overrides

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

  @Override

  public void onWindowFocusChanged(boolean hasFocus)

    {

    super.onWindowFocusChanged(hasFocus);

    mColsPicker.setValue(mNumCols);

    mRowsPicker.setValue(mNumRows);

    mSlicPicker.setValue(mNumSlic);

    if( !mGridInitialized ) setGrid();

    }

  }

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

// 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.Activity;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.opengl.GLSurfaceView;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.SeekBar;

import android.widget.Spinner;

import android.widget.TextView;

import org.distorted.examples.R;

import org.distorted.library.main.DistortedLibrary;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.mesh.MeshBase;

import java.io.IOException;

import java.io.InputStream;

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

public class PredeformActivity2 extends Activity implements SeekBar.OnSeekBarChangeListener, AdapterView.OnItemSelectedListener

{

    private Bitmap mBitmap;

    private TextView mTextLevel;

    private DistortedTexture mTexture;

    private MeshBase mMesh;

    private int mNumRows, mNumCols, mNumSlic;

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

    @Override

    protected void onPause() 

      {

      GLSurfaceView mView = this.findViewById(R.id.predeformSurfaceView);

      if( mView!=null ) mView.onPause();

      DistortedLibrary.onPause();

      super.onPause();

      }

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

    @Override

    protected void onResume() 

      {

      super.onResume();

      GLSurfaceView mView = this.findViewById(R.id.predeformSurfaceView);

      if( mView!=null ) mView.onResume();  

      }

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

    @Override

    protected void onDestroy() 

      {

      DistortedLibrary.onDestroy();

      super.onDestroy();

      }

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

    @Override

    protected void onCreate(Bundle savedState)

      {

      super.onCreate(savedState);

      Bundle b = getIntent().getExtras();

      String str     = b.getString("string");

      int objectType = b.getInt("type");

      int bitmapID   = b.getInt("bitmap");

      mNumCols       = b.getInt("cols");

      mNumRows       = b.getInt("rows");

      mNumSlic       = b.getInt("slices");

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

      createBitmap(maxsize,bitmapID);

      mMesh =  PredeformMeshList.createMesh(objectType, mNumCols, mNumRows, mNumSlic, bitmapID, str);

      mTexture = new DistortedTexture();

      setContentView(R.layout.predeformlayout);

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

      renderSpinner.setOnItemSelectedListener(this);

      String[] objectBitmap = new String[] { "Render: Normal", "Render: OIT" };

      ArrayAdapter<String> adapterBitmap = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, objectBitmap);

      adapterBitmap.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

      renderSpinner.setAdapter(adapterBitmap);

      mTextLevel = findViewById(R.id.predeformInflateText);

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

      transparencyBar.setOnSeekBarChangeListener(this);

      transparencyBar.setProgress(50);

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

      inflateBar.setOnSeekBarChangeListener(this);

      inflateBar.setProgress(50);

      }

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

    private void createBitmap(int size, int bitmapID)

      {

      if( bitmapID!=-1)

        {

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

          {

          mBitmap = 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();

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

        Canvas canvas = new Canvas(mBitmap);

        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);

          }

        }

      }

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

    int getRows()

      {

      return mNumRows;

      }

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

    int getCols()

      {

      return mNumCols;

      }

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

    int getSlic()

      {

      return mNumSlic;

      }

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

    public Bitmap getBitmap()

      {

      return mBitmap;

      }

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

    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id)

      {

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

      PredeformRenderer renderer = v.getRenderer();

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

        {

        renderer.setRenderModeToOIT(pos==1);

        }

      }

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

    public void onNothingSelected(AdapterView<?> parent)

      {

      }

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

    public void onProgressChanged(SeekBar bar, int progress, boolean fromUser)

      {

      switch (bar.getId())

        {

        case R.id.predeformTransparency: PredeformSurfaceView v1 = this.findViewById(R.id.predeformSurfaceView);

                                         v1.getRenderer().setTransparency(progress);

                                         break;

        case R.id.predeformInflateLevel: PredeformSurfaceView v2 = this.findViewById(R.id.predeformSurfaceView);

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

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

                                         break;

        }

      }

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

    public void onStartTrackingTouch(SeekBar bar) { }

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

    public void onStopTrackingTouch(SeekBar bar)  { }

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

    public DistortedTexture getTexture()

      {

      return mTexture;

      }

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

    public MeshBase getMesh()

      {

      return mMesh;

      }

}

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

// Copyright 2020 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 org.distorted.library.mesh.MeshBase;

import org.distorted.library.mesh.MeshCubes;

import org.distorted.library.mesh.MeshQuad;

import org.distorted.library.mesh.MeshRectangles;

import org.distorted.library.mesh.MeshSphere;

import org.distorted.library.mesh.MeshTriangles;

import org.distorted.library.type.Static4D;

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

public enum PredeformMeshList

  {

  Cubes      ( 3 ),

  Rectangles ( 2 ),

  Sphere     ( 1 ),

  Quad       ( 0 ),

  Triangles  ( 1 ),

  ;

  static final int LENGTH = values().length;

  private static final PredeformMeshList[] meshes;

  private int mDimension;

  static

    {

    int i=0;

    meshes = new PredeformMeshList[LENGTH];

    for(PredeformMeshList mesh: PredeformMeshList.values())

      {

      meshes[i++] = mesh;

      }

    }

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

  PredeformMeshList(int dim )

    {

    mDimension =  dim;

    }

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

  static String getName(int ordinal)

    {

    return meshes[ordinal].name();

    }

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

  static int getDimension(int ordinal)

    {

    return  meshes[ordinal].mDimension;

    }

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

  static int getRows(int ordinal, int cols, int rows, int slic)

    {

    switch(ordinal)

      {

      case 0: return rows;  // cubes

      case 1: return rows;  // rectangles

      case 2: return rows;  // sphere

      case 3: return 1;     // quad

      case 4: return rows;  // triangles

      }

    return 0;

    }

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

  static int getCols(int ordinal, int cols, int rows, int slic)

    {

    switch(ordinal)

      {

      case 0: return cols;  // cubes

      case 1: return cols;  // rectangles

      case 2: return rows;  // sphere

      case 3: return 1;     // quad

      case 4: return rows;  // triangles

      }

    return 0;

    }

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

  static int getSlic(int ordinal, int cols, int rows, int slic)

    {

    switch(ordinal)

      {

      case 0: return slic;  // cubes

      case 1: return 0;     // rectangles

      case 2: return rows;  // sphere

      case 3: return 0;     // quad

      case 4: return 0;     // triangles

      }

    return 0;

    }

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

  static String getString(int ordinal, int cols, int rows, boolean[] shape)

    {

    if( ordinal==0 )

      {

      String str = "";

      for(int i=0; i<rows*cols; i++)

        str += shape[i] ? "1" : "0";

      return str;

      }

    return "";

    }

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

  static MeshBase createMesh(int ordinal, int cols, int rows, int slic, int bitmapID, String str)

    {

    MeshBase mesh;

    int maxsize = cols > rows ? (Math.max(cols, slic)) : (Math.max(rows, slic)) ;

    switch( meshes[ordinal] )

      {

      case Cubes     : if( bitmapID!=-1 )

                         {

                         mesh = new MeshCubes(cols, str, slic);

                         }

                       else

                         {

                         Static4D mapFB = new Static4D(0.0f,0.0f, (float)cols/maxsize, (float)rows/maxsize);

                         Static4D mapLR = new Static4D(0.0f,0.0f, (float)slic/maxsize, (float)rows/maxsize);

                         Static4D mapTB = new Static4D(0.0f,0.0f, (float)cols/maxsize, (float)slic/maxsize);

                         mesh = new MeshCubes(cols, str, slic, mapFB, mapFB, mapLR, mapLR, mapTB, mapTB);

                         }

                       break;

      case Rectangles: mesh = new MeshRectangles(cols,rows);

                       break;

      case Sphere    : mesh = new MeshSphere(rows);

                       break;

      case Quad      : mesh = new MeshQuad();

                       break;

      case Triangles : mesh = new MeshTriangles(rows);

                       break;

      default:         mesh = null;

                       android.util.Log.e("Meshes", "Error: unimplemented Mesh!");

      }

    return mesh;

    }

  }

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

// 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 PredeformRenderer 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;

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

    PredeformRenderer(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 PredeformSurfaceView extends GLSurfaceView

{

    private final static int DIRECTION_SENSITIVITY=  12;

    private int mX, mY;

    private PredeformRenderer mRenderer;

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

    public PredeformSurfaceView(Context context, AttributeSet attrs)

      {

      super(context,attrs);

      mX = -1;

      mY = -1;

      if(!isInEditMode())

        {

        mRenderer = new PredeformRenderer(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 PredeformRenderer 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:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:gravity="center_horizontal"

    android:orientation="vertical" >

    <org.distorted.examples.predeform.PredeformSurfaceView

        android:id="@+id/predeformSurfaceView"

        android:layout_width="match_parent"

        android:layout_height="0dp"

        android:layout_weight="1.00" />

    <LinearLayout

        android:id="@+id/linearLayout"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:gravity="center|fill_horizontal"

        android:orientation="horizontal"

        android:background="@color/blue">

        <TextView

            android:id="@+id/predeformInflateText"

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="0.3"

            android:paddingLeft="10dp"

            android:text="@string/inflate" />

        <SeekBar

            android:id="@+id/predeformInflateLevel"

            android:layout_weight="0.7"

            android:layout_width="0dp"

            android:layout_height="50dp"

            android:paddingLeft="10dp"

            android:paddingRight="5dp" />

    </LinearLayout>

    <LinearLayout

        android:id="@+id/linearLayout3"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:gravity="center|fill_horizontal"

        android:orientation="horizontal"

        android:background="@color/blue">

        <SeekBar

            android:id="@+id/predeformTransparency"

            android:layout_weight="0.50"

            android:layout_width="0dp"

            android:layout_height="50dp"

            android:paddingLeft="10dp"

            android:paddingRight="10dp" />

        <Spinner

            android:layout_width="0dp"

            android:layout_height="50dp"

            android:layout_weight="0.5"

            android:id="@+id/predeformSpinnerMode"

            />

    </LinearLayout>

</LinearLayout>

    <string name="example_predeform">PreApply Vertex Effects to a Mesh</string>

    <string name="example_predeform_subtitle">Create a more advanced Mesh by taking one of the simple ones and pre-applying a queue of Vertex Effects to it.</string>