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.effects3d;

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.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;

import org.distorted.library.Distorted;

import org.distorted.library.MeshCubes;

import org.distorted.library.MeshFlat;

import org.distorted.library.MeshObject;

import org.distorted.library.DistortedTexture;

import org.distorted.library.DistortedEffects;

import org.distorted.library.EffectNames;

import org.distorted.library.EffectTypes;

import java.io.IOException;

import java.io.InputStream;

import java.util.ArrayList;

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

public class Effects3DActivity 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= 0xff00ff00;

  private int mNumCols = 10;

  private int mNumRows = 10;

  private boolean mGridInitialized;

  private NumberPicker mColsPicker, mRowsPicker;

  private boolean[] mShape;

  private DistortedTexture mTexture;

  private DistortedEffects mEffects;

  private MeshObject mMesh;

  private int mObjectType;

  private int mBitmapID;

  private Bitmap mBitmap;

  private LinearLayout mLay;

  private ArrayList<Effects3DEffect> mList;

  private int mEffectAdd;

  private float mCenterX, mCenterY, mCenterZ;

  private float mRegionX, mRegionY, mRegionR;

  private EffectNames[] mEffectNames;

  private static boolean mSupportsRegion;

  private static boolean mSupportsCenter;

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

  @Override

  protected void onCreate(Bundle savedState)

    {

    super.onCreate(savedState);

    mList = new ArrayList<>();

    createEffectNames();

    setContentView(R.layout.objectpickerlayout);

    mLay = (LinearLayout)findViewById(R.id.objectpicker_buttongrid);

    mColsPicker = (NumberPicker)findViewById(R.id.objectpicker_cols);

    mRowsPicker = (NumberPicker)findViewById(R.id.objectpicker_rows);

    mColsPicker.setMaxValue(40);

    mColsPicker.setMinValue( 0);

    mRowsPicker.setMaxValue(40);

    mRowsPicker.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();

           }

         });

    mObjectType = 0;

    mGridInitialized = false;

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

    typeSpinner.setOnItemSelectedListener(this);

    String[] objectType = new String[] {"Mesh: Cubes", "Mesh: Flat"};

    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  = (Spinner)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" };

    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 createEffectNames()

    {

    EffectTypes type1 = EffectTypes.FRAGMENT;

    EffectTypes type2 = EffectTypes.VERTEX;

    EffectNames[] names = EffectNames.values();

    int numEffects=0;

    for(int i=0; i<names.length; i++)

      if( names[i].getType() == type1 || names[i].getType() == type2 ) numEffects++;

    mEffectNames = new EffectNames[numEffects];

    numEffects=0;

    for(int i=0; i<names.length; i++)

      if( names[i].getType() == type1 || names[i].getType() == type2 )

        {

        mEffectNames[numEffects++] = names[i];

        }

    }

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

  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= w<h ? 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==1 ? COLOR_INAC : COLOR_ON);

        tr.addView(b, p);

        mShape[rows*mNumCols+cols] = true;

        }

      mLay.addView(tr);

      }

    }

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

  public DistortedTexture getTexture()

    {

    return mTexture;

    }

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

  public DistortedEffects getEffects()

    {

    return mEffects;

    }

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

  public MeshObject getMesh()

    {

    return mMesh;

    }

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

  public static void setSupportsRegion(boolean supports)

    {

    mSupportsRegion = supports;

    }

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

  public static boolean supportsRegion()

    {

    return mSupportsRegion;

    }

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

  public static void setSupportsCenter(boolean supports)

    {

    mSupportsCenter = supports;

    }

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

  public static boolean supportsCenter()

    {

    return mSupportsCenter;

    }

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

  public Bitmap getBitmap()

    {

    if( mBitmap==null )

      {

      if( mBitmapID!=-1)

        {

        InputStream is = getResources().openRawResource(mBitmapID);

        try

          {

          mBitmap = BitmapFactory.decodeStream(is);

          }

        finally

          {

          try

            {

            is.close();

            }

          catch(IOException e) { }

          }

        }

      else

        {

        final int W = 640;

        final int H = 640;

        Paint paint = new Paint();

        mBitmap = Bitmap.createBitmap(W,H, 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, W, H, paint);

        paint.setColor(0xffffffff);

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

          {

          canvas.drawRect(W*i/mNumCols - 1,                0,  W*i/mNumCols + 1,  H               , paint);

          canvas.drawRect(               0, H *i/mNumCols -1,  W               ,  H*i/mNumCols + 1, paint);

          }

        }

      }

    return mBitmap;

    }

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

  public void onClick(View view)

    {

    if( mObjectType!=1 )

      {

      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==1 ? COLOR_INAC : COLOR_ON);

        mShape[row*mNumCols+col] = true;

        }

      }

    }

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

  public void setRegion(float x, float y, float r)

    {

    mRegionX = x;

    mRegionY =-y;

    mRegionR = r;

    Effects3DSurfaceView view = (Effects3DSurfaceView)findViewById(R.id.effects3dSurfaceView);

    view.getRenderer().setRegion(mRegionX, mRegionY, mRegionR);

    }

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

  public void setCenter(float x, float y, float z)

    {

    mCenterX = x;

    mCenterY = y;

    mCenterZ = z;

    Effects3DSurfaceView view = (Effects3DSurfaceView)findViewById(R.id.effects3dSurfaceView);

    view.getRenderer().setCenter( mCenterX, mCenterY, mCenterZ );

    }

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

  public float getCenterX()

    {

    return mCenterX;

    }

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

  public float getCenterY()

    {

    return mCenterY;

    }

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

  public float getCenterZ()

    {

    return mCenterZ;

    }

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

  public float getRegionX()

    {

    return mRegionX;

    }

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

  public float getRegionY()

    {

    return mRegionY;

    }

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

  public float getRegionR()

    {

    return mRegionR;

    }

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

  public void Create(View v)

    {

    DistortedEffects.setMaxVertex(20);    // those have to be called before

    DistortedEffects.setMaxFragment(3);   // any DistortedEffect get created!

    if( mObjectType==1 )

      {

      mMesh = new MeshFlat(mNumCols,mNumRows);

      }

    else

      {

      String str = "";

      for(int i=0; i<mNumRows*mNumCols; i++)

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

      mMesh = new MeshCubes(mNumCols, str, false);

      }

    mEffects= new DistortedEffects();

    mTexture= new DistortedTexture(mNumCols,mNumRows);

    resetData();

    final View view = getLayoutInflater().inflate(R.layout.effects3dlayout, null);

    setContentView(view);

    String[] effects = new String[mEffectNames.length];

    for(int i=0; i<mEffectNames.length; i++) effects[i] = mEffectNames[i].name();

    Spinner effectSpinner = (Spinner)findViewById(R.id.effects3dspinner );

    effectSpinner.setOnItemSelectedListener(this);

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

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

    effectSpinner.setAdapter(adapterEffect);

    mEffectAdd = 0;

    }

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

  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();

                                              }

                                            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;

                                              }

                                            break;

      case R.id.effects3dspinner          : mEffectAdd = pos;

                                            break;

      }

    }

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

  public void onNothingSelected(AdapterView<?> parent)

    {

    }

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

  public int getWidth()

    {

    return mTexture==null ? 0: mTexture.getWidth();

    }

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

  public int getHeight()

    {

    return mTexture==null ? 0: mTexture.getHeight();

    }

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

  public int getDepth()

    {

    return mTexture==null ? 0: mTexture.getDepth(mMesh);

    }

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

  public int getScreenWidth()

    {

    return 0;

    }

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

  private void resetData()

    {

    mCenterX = 0.5f*getWidth();

    mCenterY = 0.5f*getHeight();

    mRegionX = 0;

    mRegionY = 0;

    mRegionR = getWidth()/2;

    mSupportsRegion = true;

    mSupportsCenter =false;

    }

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

// 'second screen' methods

  public void newEffect(View v)

    {

    Effects3DEffect eff = new Effects3DEffect(mEffectNames[mEffectAdd], this);

    mList.add(eff);

    LinearLayout layout = (LinearLayout)findViewById(R.id.effects3dlayout);

    View view = eff.createView();

    layout.addView(view);

    if( mSupportsCenter )

      {

      View center = eff.createCenter();

      layout.addView(center);

      }

    if( mSupportsRegion )

      {

      View region = eff.createRegion();

      layout.addView(region);

      }

    eff.apply(mEffects);

    }

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

  public void removeAll(View v)

    {

    mList.clear();

    LinearLayout layout = (LinearLayout)findViewById(R.id.effects3dlayout);

    layout.removeAllViews();

    mEffects.abortEffects(EffectTypes.VERTEX);

    mEffects.abortEffects(EffectTypes.FRAGMENT);

    resetData();

    Effects3DSurfaceView view = (Effects3DSurfaceView)findViewById(R.id.effects3dSurfaceView);

    Effects3DRenderer renderer= view.getRenderer();

    renderer.setCenter( mCenterX, mCenterY, mCenterZ );

    renderer.setRegion( mRegionX, mRegionY, mRegionR );

    renderer.mQuat1.set(0,0,0,1);

    renderer.mQuat2.set(0,0,0,1);

    }

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

  public void remove(View v)

    {

    for(Effects3DEffect effect: mList)

      {

      if( effect.thisView(v) )

        {

        LinearLayout layout = (LinearLayout)findViewById(R.id.effects3dlayout);

        View view;

        view = effect.getEffect();

        if( view!=null ) layout.removeView(view);

        view = effect.getCenter();

        if( view!=null ) layout.removeView(view);

        view = effect.getRegion();

        if( view!=null ) layout.removeView(view);

        mEffects.abortEffect(effect.getId());

        mList.remove(effect);

        resetData();

        break;

        }

      }

    }

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

// Overrides

  @Override

  protected void onPause()

    {

    GLSurfaceView mView = (GLSurfaceView)findViewById(R.id.effects3dSurfaceView);

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

    super.onPause();

    }

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

  @Override

  protected void onResume()

    {

    super.onResume();

    GLSurfaceView mView = (GLSurfaceView)findViewById(R.id.effects3dSurfaceView);

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

    }

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

  @Override

  public void onWindowFocusChanged(boolean hasFocus)

    {

    super.onWindowFocusChanged(hasFocus);

    mColsPicker.setValue(mNumCols);

    mRowsPicker.setValue(mNumRows);

    if( !mGridInitialized ) setGrid();

    }

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

  @Override

  protected void onDestroy()

    {

    Distorted.onDestroy();

    super.onDestroy();

    }

  }