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/>.                            //

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

import android.graphics.Bitmap;

import android.opengl.GLES20;

import android.opengl.GLUtils;

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

    private static final Float3D mZero3D = new Float3D(0,0,0);

    private static float[] mViewMatrix   = new float[16];

    protected EffectQueueFragment  mF;

    protected EffectQueueVertex    mV;

    protected EffectQueueOther mO;

    protected boolean matrixCloned, vertexCloned, fragmentCloned;

    protected GridObject mGrid = null;

    protected long mID;

    protected int mSizeX, mSizeY, mSizeZ, mSize; // in screen space

    protected Bitmap[] mBmp= null; // 

    int[] mTextureDataH;           // have to be shared among all the cloned Objects

    boolean[] mBitmapSet;          // 

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

    protected void initializeData(int size)

      {

      mID             = DistortedObjectList.add(this);

      mSize           = size;

      mTextureDataH   = new int[1];

      mTextureDataH[0]= 0;

      mBmp            = new Bitmap[1];

      mBmp[0]         = null;

      mBitmapSet      = new boolean[1];

      mBitmapSet[0]   = false;

      initializeEffectLists(this,0);

      if( Distorted.isInitialized() ) resetTexture();    

      }

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

    protected void initializeEffectLists(DistortedObject d, int flags)

      {

        mM = d.mM;

        matrixCloned = true;

        } 

      else

        {

        }

      if( (flags & Distorted.CLONE_VERTEX) != 0 )

        {

        mV = d.mV;

        vertexCloned = true;

        } 

      else

        {

        }

      if( (flags & Distorted.CLONE_FRAGMENT) != 0 )

        {

        mF = d.mF;

        fragmentCloned = true;

        } 

      else

        {

        }

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

// this will be called on startup and every time OpenGL context has been lost

// also call this from the constructor if the OpenGL context has been created already.

    void resetTexture()

      {

      if( mTextureDataH!=null ) 

        {

        if( mTextureDataH[0]==0 ) GLES20.glGenTextures(1, mTextureDataH, 0);

        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextureDataH[0]);       

        GLES20.glTexParameteri ( GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR );

        GLES20.glTexParameteri ( GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR );

        GLES20.glTexParameteri ( GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE );

        GLES20.glTexParameteri ( GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE );

        if( mBmp!=null && mBmp[0]!=null)

          {

          GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, mBmp[0], 0);

          mBmp[0] = null;

          }

        }

      }

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

    void drawPriv(long currTime, DistortedProjection dp)

      {

      GLES20.glViewport(0, 0, dp.width, dp.height); 

      mM.compute(currTime);

      mM.send(mViewMatrix, dp);

      mV.compute(currTime);

      mV.postprocess();

      mV.send();

      mF.compute(currTime);

      mF.postprocess(mViewMatrix);

      mF.send();

      mGrid.draw();

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

    void drawNoEffectsPriv(DistortedProjection dp)

      {

      GLES20.glViewport(0, 0, dp.width, dp.height);

      mM.sendNoEffects(dp);

      mV.sendZero();

      mF.sendZero();

      mGrid.draw();

      }

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

    void releasePriv()

      {

      if( matrixCloned  ==false) mM.abortAll();

      if( vertexCloned  ==false) mV.abortAll();

      if( fragmentCloned==false) mF.abortAll();

      mGrid         = null;

      mM            = null;

      mV            = null;

      mF            = null;

      }

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

    long getBitmapID()

      {

      return mBmp==null ? 0 : mBmp.hashCode();

      }

  /**

   * Default empty constructor so that derived classes can call it

   */

    public DistortedObject()

      {

      }

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

  /**

   * Copy constructor used to create a DistortedObject based on various parts of another object.

   * <p>

   * Whatever we do not clone gets created just like in the default constructor.

   * to give it the appropriate type of a DistortedObject!

   * @param dc    Source object to create our object from

   * @param flags A bitmask of values specifying what to copy.

    public DistortedObject(DistortedObject dc, int flags)

      {

      initializeEffectLists(dc,flags);

      mID = DistortedObjectList.add(this);

      mSizeX = dc.mSizeX;

      mSizeY = dc.mSizeY;

      mSizeZ = dc.mSizeZ;

      mSize  = dc.mSize;

      mGrid  = dc.mGrid;

      if( (flags & Distorted.CLONE_BITMAP) != 0 )

        {

        mTextureDataH = dc.mTextureDataH;

        mBmp          = dc.mBmp;

        mBitmapSet    = dc.mBitmapSet;

        }

      else

        {

        mTextureDataH   = new int[1];

        mTextureDataH[0]= 0;

        mBitmapSet      = new boolean[1];

        mBitmapSet[0]   = false;

        mBmp            = new Bitmap[1];

        mBmp[0]         = null;

        if( Distorted.isInitialized() ) resetTexture();

        }

      }

/**

 * Draw the DistortedObject to the location specified by current Matrix effects.    

 *     

 * @param currTime current time, in milliseconds, as returned by System.currentTimeMillis().

 *        This gets passed on to Interpolators inside the Effects that are currently applied to the 

 *        Object.

 */

   public void draw(long currTime)

     {

     GLES20.glActiveTexture(GLES20.GL_TEXTURE0);

     GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);

     GLES20.glUniform1i(Distorted.mTextureUniformH, 0);  

     GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextureDataH[0]); 

     drawPriv(currTime, Distorted.mProjection);

     }

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

/**

 * Releases all resources.

 */

   public synchronized void release()

     {

     releasePriv();  

     DistortedObjectList.remove(this);

     }

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

/**

 * Sets the underlying android.graphics.Bitmap object and uploads it to the GPU. 

 * <p>

 * You can only recycle() the passed Bitmap once the OpenGL context gets created (i.e. after call 

 * to onSurfaceCreated) because only after this point can the Library upload it to the GPU!

 * 

 * @param bmp The android.graphics.Bitmap object to apply effects to and display.

 */

   public void setBitmap(Bitmap bmp)

     {

     mBitmapSet[0] = true; 

     if( Distorted.isInitialized() )

       {

       GLES20.glActiveTexture(GLES20.GL_TEXTURE0);

       GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextureDataH[0]);        

       GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bmp, 0);

       }

     else

       {

       mBmp[0] = bmp;  

       }

     }

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

/**

 * Adds the calling class to the list of Listeners that get notified each time some event happens 

 * to one of the Effects that are currently applied to the DistortedBitmap.

 * 

 * @param el A class implementing the EffectListener interface that wants to get notifications.

 */

   public void addEventListener(EffectListener el)

     {

     mV.addListener(el);

     mF.addListener(el);

     mM.addListener(el);

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

/**

 * Removes the calling class from the list of Listeners.

 * 

 * @param el A class implementing the EffectListener interface that no longer wants to get notifications.

 */

   public void removeEventListener(EffectListener el)

     {

     mV.removeListener(el);

     mF.removeListener(el);

     mM.removeListener(el);

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

/**

 * Returns the height of the DistortedObject.

 *    

 * @return height of the object, in pixels.

 */

   public int getWidth()

     {

     return mSizeX;   

     }

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

/**

 * Returns the width of the DistortedObject.

 * 

 * @return width of the Object, in pixels.

 */

    public int getHeight()

      {

      return mSizeY;  

      }

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

/**

 * Returns the depth of the DistortedObject.

 * 

 * @return depth of the Object, in pixels.

 */

    public int getDepth()

      {

      return mSizeZ;  

      }

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

/**

 * Returns unique ID of this instance.

 * 

 * @return ID of the object.

 */

    public long getID()

      {

      return mID;  

      }

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

/**

 * @return Number of effects aborted.

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

/**

 * @return Number of effects aborted.

        {

        case MATRIX  : return mM.abortAll();

        case VERTEX  : return mV.abortAll();

        case FRAGMENT: return mF.abortAll();

        case OTHER   : return mO.abortAll();

        default      : return 0;

        }

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

/**

 * Aborts a single Effect.

 * 

 * @param id ID of the Effect we want to abort.

      if( type==EffectTypes.VERTEX.type   ) return mV.removeByID(id>>EffectTypes.LENGTH);

      if( type==EffectTypes.FRAGMENT.type ) return mF.removeByID(id>>EffectTypes.LENGTH);

      if( type==EffectTypes.OTHER.type    ) return mO.removeByID(id>>EffectTypes.LENGTH);

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

/**

 * Abort all Effects of a given type, for example all rotations.

 * 

        case VERTEX  : return mV.removeByType(name);

        case FRAGMENT: return mF.removeByType(name);

        case OTHER   : return mO.removeByType(name);

      }

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

/**

 * Print some info about a given Effect to Android's standard out. Used for debugging only.

 * 

 * @param id Effect ID we want to print info about

 * @return <code>true</code> if a single Effect of type effectType has been found.

 */

    public boolean printEffect(long id)

      {

      if( type==EffectTypes.MATRIX.type   )  return mM.printByID(id>>EffectTypes.LENGTH);

      if( type==EffectTypes.VERTEX.type   )  return mV.printByID(id>>EffectTypes.LENGTH);

      if( type==EffectTypes.FRAGMENT.type )  return mF.printByID(id>>EffectTypes.LENGTH);

      if( type==EffectTypes.OTHER.type    )  return mO.printByID(id>>EffectTypes.LENGTH);

      return false;

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

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

// Individual effect functions.

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

// Matrix-based effects

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

// MOVE

/**

 * Moves the Object by a vector that changes in time as interpolated by the Interpolator.

 * 

 *               representing the current coordinates of the vector we want to move the Object with.

 * @return       ID of the effect added, or -1 if we failed to add one.

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

/**

 * @param y        The y-coordinate of the vector we want to move the Object with.

 * @param z        The z-coordinate of the vector we want to move the Object with.

  public long move(float x,float y,float z, int duration)

    {   

    Interpolator3D di = new Interpolator3D();  

    di.setCount(0.5f);

    di.setDuration(duration);

    di.add(new Float3D(0.0f,0.0f,0.0f));                             

    di.add(new Float3D(x,y,z));                        

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

/**

 * @param x The x-coordinate of the vector we want to move the Object with. 

 * @param y The y-coordinate of the vector we want to move the Object with.

 * @param z The z-coordinate of the vector we want to move the Object with.

  public long move(float x,float y,float z)

    {   

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

// SCALE

/**

 * Scales the Object by factors that change in time as returned by the Interpolator.

 * 

 *              representing the current x- , y- and z- scale factors.

 * @return      ID of the effect added, or -1 if we failed to add one.

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

/**

 * Scales the Object by a factor that smoothly changes from (1,1,1) at time 0 to (xscale,yscale,zscale)

 * after 'duration' milliseconds. 

 *    

 *                 xscale=2, after 'duration' milliseconds the Object will become twice broader.

 * @param yscale   Factor to scale Object's height with.

 * @param zscale   Factor to scale Object's depth with.

  public long scale(float xscale,float yscale,float zscale, int duration)

    {   

    Interpolator3D di = new Interpolator3D();  

    di.setCount(0.5f);

    di.setDuration(duration);

    di.add(new Float3D(1.0f,1.0f,1.0f));                             

    di.add(new Float3D(xscale,yscale,zscale));                        

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

/**

 * Immediately scales the Object's width by (xscale,yscale,zscale).   

 *   

 * @param xscale Object's width gets multiplied by this factor; e.g. if 

 *               xscale=2, the Object immediately becomes twice broader.

 * @param yscale factor to scale Object's height with.

 * @param zscale factor to scale Object's depth with. 

  public long scale(float xscale,float yscale,float zscale)

    {   

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

/**

 * Convenience function - scale the Object by the same factor in all 3 dimensions.   

 *   

  public long scale(float scale)

    {   

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

// ROTATE

/**

 * Rotates the Object around a (possibly moving) point, with angle and axis that change in time.

 * 

 *                  of the rotation

 * @param angleAxis 4-dimensional Interpolator which at any given time will return a Float4D

 *                  representing the current rotation in the (angle,axisX,axisY,axisY) form.

 * @return          ID of the effect added, or -1 if we failed to add one.

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

/**

 * Rotates the Object around a static point, with angle and axis that change in time.

 * 

 * @param angleAxis 4-dimensional Interpolator which at any given time will return a Float4D

 *                  representing the current rotation in the (angle,axisX,axisY,axisY) form.

 * @return          ID of the effect added, or -1 if we failed to add one.

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

/**

 * (axisX, axisY, axisZ). 

 * @param angle  1-dimensional Interpolator which at any given time will return the current rotation

 *               angle.

 * @param axisX  Rotation vector: x-coordinate

 * @param axisY  Rotation vector: y-coordinate

 * @param axisZ  Rotation vector: z-coordinate

 * @return       ID of the effect added, or -1 if we failed to add one.

 */

  public long rotate(Float3D center, Interpolator1D angle, float axisX, float axisY, float axisZ)

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

/**

 * Rotates the Object around a (possibly moving) point, with angle that changes in time.

 * Axis of rotation is the vector (0,0,1), i.e. a vector normal to the screen surface.

 * 

 *               of the rotation.

 * @param angle  1-dimensional Interpolator which returns the current rotation angle.

 * @return       ID of the effect added, or -1 if we failed to add one.

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

/**

 * Rotates the Object around a constant point, with angle that changes in time.  

 * Axis of rotation is the vector (0,0,1), i.e. a vector normal to the screen surface.

 *   

    Interpolator1D di = new Interpolator1D();  

    di.setCount(0.5f);

    di.setDuration(duration);

    di.add(new Float1D(    0));                             

    di.add(new Float1D(angle));                        

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

/**

 * Rotates the Object immediately by 'angle' degrees around point p.   

 * Axis of rotation is given by the last 3 floats.

 *   

 * @param angle  Angle that we want to rotate the Bitmap to. Unit: degrees

 * @param axisX  Axis of rotation: x-coordinate

 * @param axisY  Axis of rotation: y-coordinate

 * @param axisZ  Axis of rotation: z-coordinate

 * @return       ID of the effect added, or -1 if we failed to add one.

 */

  public long rotate(Float3D center, float angle, float axisX, float axisY, float axisZ)

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

/**

 * Rotates the Object immediately by 'angle' degrees around point p.   

 *   

 */

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

// QUATERNION

/**

 * Rotates the Object immediately by quaternion (qX,qY,qZ,qW).

 *   

 * @param qX     Quaternion: x-coordinate

 * @param qY     Quaternion: y-coordinate

 * @param qZ     Quaternion: z-coordinate

 * @param qW     Quaternion: w-coordinate

 * @return       ID of the effect added, or -1 if we failed to add one.

 */

  public long quaternion(Float3D center, float qX, float qY, float qZ, float qW)

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

/**

 * Rotates the Object by a quaternion that's at the moment returned by the InterpolatorQuat.

 *   

 * @param quat   Interpolator that's going to, at any given moment, return a quaternion.

 * @return       ID of the effect added, or -1 if we failed to add one.

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

/**

 * Rotates the Object around a moving point by a quaternion that's at the moment returned by the InterpolatorQuat.

 *   

 * @param quat   Interpolator that's going to, at any given moment, return a quaternion representing

 *               the current rotation.

 * @return       ID of the effect added, or -1 if we failed to add one.

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

// SHEAR

/**

 * Shears the Object. If the Interpolator is 1D, it will shear along the X-axis. 2D Interpolator adds

 * shearing along the Y-axis, 3D one along Z axis.

 *

 * @param shear   1- 2- or 3D Interpolator which, at any given point, returns the ordered 1-, 2-

 *                or 3-tuple of shear factors.

 * @return        ID of the effect added, or -1 if we failed to add one.