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.support.design.widget.TabLayout;

import android.support.v4.view.ViewPager;

import android.view.Gravity;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.CheckBox;

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.effect.EffectType;

import org.distorted.library.main.Distorted;

import org.distorted.library.main.MeshCubes;

import org.distorted.library.main.MeshFlat;

import org.distorted.library.main.MeshObject;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.main.DistortedEffects;

import java.io.IOException;

import java.io.InputStream;

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

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 int mNumSlic =  1;

  private boolean mGridInitialized;

  private NumberPicker mColsPicker, mRowsPicker, mSlicPicker;

  private boolean[] mShape;

  private DistortedTexture mTexture;

  private MeshObject mMesh;

  private int mObjectType;

  private int mBitmapID;

  private Bitmap mBitmap;

  private LinearLayout mLay;

  private float mCenterX, mCenterY, mCenterZ;

  private float mRegionX, mRegionY, mRegionR;

  private DistortedEffects mEffects;

  private ViewPager mViewPager;

  private Effects3DTabViewPager mPager;

  private static boolean mShowCenter = true;

  private static boolean mShowRegion = true;

  private static boolean mShowNormal = true;

  private static boolean mUseOIT     = false;

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

  @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( 0);

    mRowsPicker.setMaxValue(40);

    mRowsPicker.setMinValue( 0);

    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[] {"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  = 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 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 MeshObject getMesh()

    {

    return mMesh;

    }

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

  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 = 64*mNumCols;

        final int H = 64*mNumRows;

        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);

        for(int i=0; i<=mNumRows ; i++ ) canvas.drawRect( 0, H*i/mNumRows-1, W,  H*i/mNumRows+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 = 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 = 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.setMax(EffectType.VERTEX ,20);    // those have to be called before

    DistortedEffects.setMax(EffectType.FRAGMENT,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, mNumSlic);

      }

    mMesh.setShowNormals(mShowNormal);

    mTexture= new DistortedTexture(mNumCols,mNumRows);

    mEffects= new DistortedEffects();

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

    setContentView(view);

    mViewPager = findViewById(R.id.effects3d_viewpager);

    mPager = new Effects3DTabViewPager(this, getFragmentManager() );

    mViewPager.setAdapter(mPager);

    TabLayout tabLayout = findViewById(R.id.effects3d_sliding_tabs);

    tabLayout.setupWithViewPager(mViewPager);

    resetData();

    }

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

  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;

      }

    }

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

  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;

    }

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

  void resetData()

    {

    mCenterX = 0.5f*getWidth();

    mCenterY = 0.5f*getHeight();

    mRegionX = 0;

    mRegionY = 0;

    mRegionR = getWidth()/2;

    Effects3DSurfaceView view = 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);

    }

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

// 'second screen' methods

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

  public DistortedEffects getEffects()

    {

    return mEffects;

    }

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

  public void newEffect(View v)

    {

    mPager.newEffect(v,mViewPager.getCurrentItem());

    }

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

  public void removeAll(View v)

    {

    mPager.removeAll(v,mViewPager.getCurrentItem());

    }

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

  public void remove(View v)

    {

    mPager.remove(v,mViewPager.getCurrentItem());

    }

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

  boolean getShowCenter()

    {

    return mShowCenter;

    }

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

  boolean getShowRegion()

    {

    return mShowRegion;

    }

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

  public void showCenter(View view)

    {

    CheckBox box = (CheckBox)view;

    mShowCenter = box.isChecked();

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

    sv.getRenderer().showRegionAndCenter(mShowRegion,mShowCenter);

    }

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

  public void showRegion(View view)

    {

    CheckBox box = (CheckBox)view;

    mShowRegion = box.isChecked();

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

    sv.getRenderer().showRegionAndCenter(mShowRegion,mShowCenter);

    }

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

  public void showNormal(View view)

    {

    CheckBox box = (CheckBox)view;

    mShowNormal = box.isChecked();

    if ( mMesh!=null )

      {

      mMesh.setShowNormals(mShowNormal);

      }

    }

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

  public void triggerOIT(View view)

    {

    CheckBox box = (CheckBox)view;

    mUseOIT = box.isChecked();

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

    sv.getRenderer().useOIT(mUseOIT);

    }

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

// Overrides

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

  @Override

  protected void onPause()

    {

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

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

    Distorted.onPause();

    super.onPause();

    }

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

  @Override

  protected void onResume()

    {

    super.onResume();

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

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

    }

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

  @Override

  public void onWindowFocusChanged(boolean hasFocus)

    {

    super.onWindowFocusChanged(hasFocus);

    mColsPicker.setValue(mNumCols);

    mRowsPicker.setValue(mNumRows);

    mSlicPicker.setValue(mNumSlic);

    if( !mGridInitialized ) setGrid();

    }

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

  @Override

  protected void onDestroy()

    {

    Distorted.onDestroy();

    super.onDestroy();

    }

  }