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.vertex3d;

import android.app.Activity;

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.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.Spinner;

import android.widget.TableRow;

import android.widget.TextView;

import org.distorted.examples.R;

import org.distorted.library.Distorted;

import org.distorted.library.DistortedBitmap;

import org.distorted.library.DistortedCubes;

import org.distorted.library.DistortedObject;

import org.distorted.library.EffectNames;

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

public class Vertex3DActivity extends Activity

                              implements OnSeekBarChangeListener,

                                         View.OnClickListener,

                                         AdapterView.OnItemSelectedListener

  {

  private static final int COLOR_OFF = 0xffffe81f;

  private static final int COLOR_ON  = 0xff0000ff;

  private boolean firstScreen;

  // fields needed for the first 'pick-a-shape' screen

  //

  private int mNumCols = 3;

  private int mNumRows = 3;

  private NumberPicker mColsPicker, mRowsPicker;

  private LinearLayout mLay;

  private boolean[] mShape;

  // fields needed for the second 'apply vertex effects' screen

  //

  private SeekBar bar;

  private TextView textDeform, textDistort, textSink, textSwirl, textCenter;

  private int deformX, deformY, deformZ;

  private int distortX, distortY, distortZ;

  private int sinkA;

  private int swirlA;

  private int centerX, centerY;

  private float fdeformX, fdeformY, fdeformZ;

  private float fdistortX, fdistortY, fdistortZ;

  private float fsinkA;

  private float fswirlA;

  private float fcenterX, fcenterY;

  private DistortedObject mObject;

  private EffectNames[] effects = new EffectNames[4];

  private int mObjectType;

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

  @Override

  protected void onCreate(Bundle savedState)

    {

    super.onCreate(savedState);

    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(10);

    mColsPicker.setMinValue( 0);

    mRowsPicker.setMaxValue(10);

    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();

        }

      });

    firstScreen = true;

    mObjectType = 0;

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

    typeSpinner.setOnItemSelectedListener(this);

    String[] objectType = new String[] {"DistortedCubes", "DistortedBitmap"};

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

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

    typeSpinner.setAdapter(adapter);

    }

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

  private void setGrid()

    {

    mNumCols = mColsPicker.getValue();

    mNumRows = mRowsPicker.getValue();

    int width = mLay.getWidth();

    int height= mLay.getHeight();

    int w = mNumCols>0 ? (width / mNumCols) -10 : 0;

    int h = mNumRows>0 ? (height/ mNumRows) -10 : 0;

    int size= w<h ? w:h;

    int pad = size/20;

    mLay.removeAllViews();

    mShape = new boolean[mNumRows*mNumCols];

    TableRow.LayoutParams p = new android.widget.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(COLOR_OFF);

        tr.addView(b, p);

        mShape[rows*mNumCols+cols] = false;

        }

      mLay.addView(tr);

      }

    }

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

  public DistortedObject getObject()

    {

    return mObject;

    }

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

  public void onClick(View view)

    {

    Button tmp = (Button)view;

    int id = tmp.getId();

    mShape[id] = !mShape[id];

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

    }

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

  public void Create(View v)

    {

    firstScreen = false;

    if( mObjectType==1 )

      {

      mObject = new DistortedBitmap(100,100,mNumCols);

      }

    else

      {

      String str = "";

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

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

      mObject = new DistortedCubes(mNumCols, str, 10);

      }

    setContentView(R.layout.vertex3dlayout);

    Default(null);

    }

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

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

    {

    switch(parent.getId())

      {

      case R.id.objectpicker_spinnerType: mObjectType = pos; break;

      }

    }

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

  public void onNothingSelected(AdapterView<?> parent)

    {

    }

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

// 'second screen' methods

  public void Default(View view)

    {

    effects[0] = EffectNames.DEFORM;

    effects[1] = EffectNames.DISTORT;

    effects[2] = EffectNames.SINK;

    effects[3] = EffectNames.SWIRL;

    deformX = 50;

    deformY = 50;

    deformZ = 50;

    distortX = 50;

    distortY = 50;

    distortZ = 50;

    sinkA =  50;

    swirlA = 50;

    centerX = 50;

    centerY = 50;

    textCenter = (TextView)findViewById(R.id.vertex3dcenterText);

    computeCenter();

    setCenterText();

    setBar(R.id.vertex3dcenterX, centerX);

    setBar(R.id.vertex3dcenterY, centerY);

    addViews();

    }

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

  private void addViews()

    {

    LinearLayout layout = (LinearLayout)findViewById(R.id.vertex3dlayout);

    layout.removeAllViews();

    View deform = getLayoutInflater().inflate(R.layout.vertex3ddeform , null);

    View distort= getLayoutInflater().inflate(R.layout.vertex3ddistort, null);

    View sink   = getLayoutInflater().inflate(R.layout.vertex3dsink   , null);

    View swirl  = getLayoutInflater().inflate(R.layout.vertex3dswirl  , null);

    for( int i=effects.length-1 ; i>=0 ; i-- )

      {

      switch(effects[i])

        {

        case DEFORM : layout.addView(deform , 0); break;

        case DISTORT: layout.addView(distort, 0); break;

        case SINK   : layout.addView(sink   , 0); break;

        case SWIRL  : layout.addView(swirl  , 0); break;

        }

      }

    textDeform = (TextView)findViewById(R.id.vertex3ddeformText);

    textDistort= (TextView)findViewById(R.id.vertex3ddistortText);

    textSink   = (TextView)findViewById(R.id.vertex3dsinkText);

    textSwirl  = (TextView)findViewById(R.id.vertex3dswirlText);

    setDeformText();

    setDistortText();

    setSinkText();

    setSwirlText();

    setBar(R.id.vertex3ddeformBar1, deformX);

    setBar(R.id.vertex3ddeformBar2, deformY);

    setBar(R.id.vertex3ddeformBar3, deformZ);

    setBar(R.id.vertex3ddistortBar1, distortX);

    setBar(R.id.vertex3ddistortBar2, distortY);

    setBar(R.id.vertex3ddistortBar3, distortZ);

    setBar(R.id.vertex3dsinkBar1, sinkA);

    setBar(R.id.vertex3dswirlBar1, swirlA);

    Vertex3DSurfaceView view = (Vertex3DSurfaceView)findViewById(R.id.vertex3dSurfaceView);

    view.getRenderer().setOrder(effects);

    }

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

  private void moveUp(EffectNames name)

    {

    int len = effects.length-1;

    int index = -1;

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

      {

      if( effects[i]==name )

        {

        index=i;

        break;

        }

      }

    if( index==0 )

      {

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

        effects[i] = effects[i+1];

      effects[len] = name;

      }

    else if( index>0 )

      {

      effects[index]   = effects[index-1];

      effects[index-1] = name;

      }

    addViews();

    }

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

  public void ButtonDeform(View v)

    {

    moveUp(EffectNames.DEFORM);

    }

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

  public void ButtonDistort(View v)

    {

    moveUp(EffectNames.DISTORT);

    }

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

  public void ButtonSink(View v)

    {

    moveUp(EffectNames.SINK);

    }

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

  public void ButtonSwirl(View v)

    {

    moveUp(EffectNames.SWIRL);

    }

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

  private void setBar(int id, int value)

    {

    bar = (SeekBar)findViewById(id);

    bar.setOnSeekBarChangeListener(this);

    bar.setProgress(value);

    }

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

  private void computeDeform()

    {

    Vertex3DSurfaceView view = (Vertex3DSurfaceView)findViewById(R.id.vertex3dSurfaceView);

    Vertex3DRenderer renderer = view.getRenderer();

    fdeformX = (deformX-50)*renderer.mScreenMin/200.0f;

    fdeformY = (deformY-50)*renderer.mScreenMin/200.0f;

    fdeformZ = (deformZ-50)*renderer.mScreenMin/200.0f;

    renderer.setDeform( fdeformX, fdeformY, fdeformZ );

    }

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

  private void setDeformText()

    {

    fdeformX = ((int)(100*fdeformX))/100.0f;

    fdeformY = ((int)(100*fdeformY))/100.0f;

    fdeformZ = ((int)(100*fdeformZ))/100.0f;

    textDeform.setText("deform("+fdeformX+" , "+fdeformY+" , "+fdeformZ+")");

    }

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

  private void computeDistort()

    {

    Vertex3DSurfaceView view = (Vertex3DSurfaceView)findViewById(R.id.vertex3dSurfaceView);

    Vertex3DRenderer renderer = view.getRenderer();

    fdistortX = (distortX-50)*renderer.mScreenMin/200.0f;

    fdistortY = (distortY-50)*renderer.mScreenMin/200.0f;

    fdistortZ = (distortZ-50)*renderer.mScreenMin/200.0f;

    renderer.setDistort(fdistortX, fdistortY, fdistortZ);

    }

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

  private void setDistortText()

    {

    fdistortX = ((int)(100*fdistortX))/100.0f;

    fdistortY = ((int)(100*fdistortY))/100.0f;

    fdistortZ = ((int)(100*fdistortZ))/100.0f;

    textDistort.setText("distort("+fdistortX+" , "+fdistortY+" , "+fdistortZ+")");

    }

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

  private void computeSink()

    {

    Vertex3DSurfaceView view = (Vertex3DSurfaceView)findViewById(R.id.vertex3dSurfaceView);

    fsinkA = (sinkA>= 50 ? 0.18f*sinkA-8.0f : 0.018f*sinkA + 0.1f);

    view.getRenderer().setSink( fsinkA );

    }

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

  private void setSinkText()

    {

    fsinkA = ((int)(100*fsinkA))/100.0f;

    textSink.setText("sink("+fsinkA+")");

    }

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

  private void computeSwirl()

    {

    Vertex3DSurfaceView view = (Vertex3DSurfaceView)findViewById(R.id.vertex3dSurfaceView);

    fswirlA = (swirlA-50)*3.6f;

    view.getRenderer().setSwirl( fswirlA );

    }

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

  private void setSwirlText()

    {

    fswirlA = ((int)(100*fswirlA))/100.0f;

    textSwirl.setText("swirl("+fswirlA+")");

    }

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

  private void computeCenter()

    {

    Vertex3DSurfaceView view = (Vertex3DSurfaceView)findViewById(R.id.vertex3dSurfaceView);

    fcenterX = centerX;

    fcenterY = centerY;

    view.getRenderer().setCenter( fcenterX, fcenterY );

    }

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

  private void setCenterText()

    {

    fcenterX = ((int)(100*fcenterX))/100.0f;

    fcenterY = ((int)(100*fcenterY))/100.0f;

    textCenter.setText("center("+fcenterX+","+fcenterY+")");

    }

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

  public float getCenterX()

    {

    return fcenterX;

    }

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

  public float getCenterY()

    {

    return fcenterY;

    }

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

// Overrides

  @Override

  protected void onPause()

    {

    GLSurfaceView mView = (GLSurfaceView)findViewById(R.id.vertex3dSurfaceView);

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

    super.onPause();

    }

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

  @Override

  protected void onResume()

    {

    super.onResume();

    GLSurfaceView mView = (GLSurfaceView)findViewById(R.id.vertex3dSurfaceView);

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

    }

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

  @Override

  public void onWindowFocusChanged(boolean hasFocus)

    {

    super.onWindowFocusChanged(hasFocus);

    if( firstScreen )

      {

      mColsPicker.setValue(mNumCols);

      mRowsPicker.setValue(mNumRows);

      if( hasFocus ) setGrid();

      }

    }

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

  @Override

  protected void onDestroy()

    {

    Distorted.onDestroy();

    super.onDestroy();

    }

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

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

    {

    switch (bar.getId())

      {

      case R.id.vertex3dcenterX     : centerX = progress; computeCenter() ; setCenterText()  ; break;

      case R.id.vertex3dcenterY     : centerY = progress; computeCenter() ; setCenterText()  ; break;

      case R.id.vertex3ddeformBar1  : deformX = progress; computeDeform() ; setDeformText()  ; break;

      case R.id.vertex3ddeformBar2  : deformY = progress; computeDeform() ; setDeformText()  ; break;

      case R.id.vertex3ddeformBar3  : deformZ = progress; computeDeform() ; setDeformText()  ; break;

      case R.id.vertex3ddistortBar1 : distortX= progress; computeDistort(); setDistortText() ; break;

      case R.id.vertex3ddistortBar2 : distortY= progress; computeDistort(); setDistortText() ; break;

      case R.id.vertex3ddistortBar3 : distortZ= progress; computeDistort(); setDistortText() ; break;

      case R.id.vertex3dsinkBar1    : sinkA   = progress; computeSink()   ; setSinkText()    ; break;

      case R.id.vertex3dswirlBar1   : swirlA  = progress; computeSwirl()  ; setSwirlText()   ; break;

      }

    }

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

  public void onStartTrackingTouch(SeekBar bar) { }

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

  public void onStopTrackingTouch(SeekBar bar)  { }

  }