pGraphicalFunction.cxx

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//----------------------------------------------------------------------------
// Class definition include
//----------------------------------------------------------------------------
#include "pGraphicalFunction.h"
#include "math.h"
#include <iostream>
#include <fstream>
#include <string>
#include <vector>

// ----------------------------------------------------------------------------
// WX headers inclusion.
// For compilers that support precompilation, includes <wx/wx.h>.
// ----------------------------------------------------------------------------

#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif

//----------------------------------------------------------------------------
// Class implementation
//----------------------------------------------------------------------------

IMPLEMENT_CLASS(pGraphicalFunction, pPlotterLayer)

pGraphicalFunction:: pGraphicalFunction(wxString name, int flags)
{
        SetName(name);
        showPointsF = false;
        validPointRange = 5;
        logicFunction = new pLogicalFunction ();
        fromWindow=false;
        factorZoom=1;
        drawing=false;
        editable=true;
        ifActual=false;
        zoomIn=false;
        setOffsetX(0);
        setOffsetY(0);
        initialDrawingPoint=NULL;
        finalDrawingPoint=NULL;
        //type=1 means that is going to be a piecewise function
        _type=1;
        xKSpline=NULL;
        yKSpline=NULL;
        offsetPixelX=0;
        offsetPixelY=0;
        xTraslation=0;
        mType=DEFAULT;
        
}

pGraphicalFunction :: ~ pGraphicalFunction ()
{
        
}

//set if the function has to draw the points
void pGraphicalFunction::SetShowPoints(bool showPoints)
{
        showPointsF = showPoints;
}
//get the paramater showPointsF
bool pGraphicalFunction::getShowPoints()
{
        return showPointsF;
}
/*
 * Set Up startPoint, endPoint, maxY,maxX points        
*/
void pGraphicalFunction::setUp()
{
        logicFunction->setUp();
        setMaxX(logicFunction->getMaxX());
        setMinX(logicFunction->getMinX());
        setMaxY(logicFunction->getMaxY());
        setMinY(logicFunction->getMinY());
        setStartX(logicFunction->getStartX());
        setEndX(logicFunction->getEndX());
        setStartY(logicFunction->getStartY());
        setEndY(logicFunction->getEndY());
        
}

/*
* validate if the function has that point in a sensible area returning the index where the point was found or -1 if is in not part of the function: define the sensible area is  
* x1-validPointRange<x<x1+validPointRange y1-validPointRange<y<y1+validPointRange
*/
int pGraphicalFunction::validPointOnFunction(wxPoint realPoint)
{
        return (logicFunction -> validPointOnFunction (realPoint));
}
/*
* returns the index in the list of the point 
*/
int pGraphicalFunction::getIndexOf(wxPoint realpoint)
{
        return logicFunction -> getIndexOf( realpoint );        
}

/*
* This metohd returns the node of the point that is the movingPointIndex position in the list of points.
* @param: int movingPointIndex, Is the index value of the searched node. 
* @return: Return a pointer to the node corresponding to the index value by parameter.
*/
wxNode* pGraphicalFunction::GetPointAt( int movingPointIndex )
{
        return logicFunction -> GetPointAt ( movingPointIndex );        
}
/*
 * Set the scales of the function in x and y
 * 
 */
void pGraphicalFunction::setScales()
{
        //int dx= logicFunction->getMaxX()-logicFunction->getMinX();
        //int dy= logicFunction->getMaxY()-logicFunction->getMinY();
        int dx= maxShowedX-minShowedX;
        int dy= maxShowedY-minShowedY;
        
        
        if(dx!=0 && dy!=0)
        {
                double scaleX=(((float)(screenX-100))/dx)*factorZoom;
                double scaleY=(((float)(screenY-50))/dy)*factorZoom;
                setScaleX(scaleX);
                setScaleY(scaleY);
                logicFunction->setScaleX(scaleX);
                logicFunction->setScaleY(scaleY);

        }
}
/*
* Includes a point between two existing points of this function. The new point (x,y) was not defined when the function was created.
* @return Returns true is the point was succcesfully added to the funcion.
*/
bool pGraphicalFunction:: AddNewPoint(int x,int y)
{
        bool added= logicFunction -> AddNewPoint ( x, y );
        if(!fromWindow)
         setUp();
        else
        {
                logicFunction->setEndPoints();
                logicFunction->setStartPoints();
        }
        return added;
}

/*
* This tries to Add a point to the function if possible it returns true.
* @pre: The list of existing points is ordered.
* @param: int aX, The x value of the point.
* @param: int aY, The y value of the point.
* @param: return Returns TRUE if the point was succesfuly included in the realPoints list.
*/
bool pGraphicalFunction::AddPoint(int aX, int aY,bool order) 
{       
        bool added=false;
        if (logicFunction!=NULL){
                added=logicFunction -> AddPoint( aX, aY,order );
                if(!fromWindow)
                        setUp();
                else
                {
                        logicFunction->setEndPoints();
                        logicFunction->setStartPoints();
                } // if fromWindow
        } // if logicFunction
        return added;
}

bool pGraphicalFunction::DeletePoint(int aX, int aY) 
{
        bool added= logicFunction -> DeletePoint( aX, aY );     
        if(!fromWindow)
         setUp();
        else
        {
                logicFunction->setEndPoints();
                logicFunction->setStartPoints();
        }
        return added;
}

bool pGraphicalFunction::deletePointAt(int index)
{
        bool added=logicFunction -> deletePointAt( index );
        if(!fromWindow)
         setUp();
        else
        {
                logicFunction->setEndPoints();
                logicFunction->setStartPoints();
        }
        return added;
}

bool pGraphicalFunction::changePoint(wxPoint newCoords, int movingIndexPoint) 
{
        bool added= (logicFunction -> changePoint( newCoords, movingIndexPoint ));
        if(!fromWindow)
         setUp();
        else
        {
                logicFunction->setEndPoints();
                logicFunction->setStartPoints();
        }
        return added;
}
/*
bool pGraphicalFunction::hasPoint(wxPoint aPoint) 
{
        return logicFunction -> hasPoint( aPoint );     
}
*/

double* pGraphicalFunction::getX_RealValues() 
{
        return (logicFunction -> getX_RealValues( ));   
}

double * pGraphicalFunction::getY_RealValues() 
{  

        return (logicFunction -> getY_RealValues());    
}

//----------------------------------
// Asking if it has a point (x,y)
//----------------------------------

/*
* returns true if the point is along the function
* false otherway
*/
bool pGraphicalFunction:: isInFunction(int x, int y)
{
        wxNode* before;
        wxNode* next;
        pFunctionPoint* point= new pFunctionPoint(x,y);
        bool inLine;
        before=getBefore(point);

        if(before && before->GetNext())
        {
                next = before->GetNext();
                //next = (before->GetNext())->GetNext();
                inLine= isInLine((pFunctionPoint*)before->GetData(),(pFunctionPoint*)next->GetData(),point);
        }
        else 
                inLine=false;
        return inLine;
}
/*
* give us the point that is in the function and is exactly before
* the point we are giving
*/
wxNode* pGraphicalFunction:: getBefore(pFunctionPoint* point)
{
        int minDiference=10000000;
        wxNode* node=logicFunction->GetPointAt(0);
        wxNode* before=NULL;

        while(node)
        {
                pFunctionPoint* before1=(pFunctionPoint*)node->GetData();
                int beforeX=before1->getRealX();
                int pointX=point->getRealX();
                if(beforeX<pointX)
                {
                  int minDiference1=pointX-beforeX;
                  if(minDiference1<minDiference)
                  {
                          minDiference=minDiference1;
                          before=node;
                  }
                }
                node=node->GetNext();
        }
        return before;
}
/*
* Returns true if the point is in the line
*/
bool pGraphicalFunction::isInLine(pFunctionPoint* before,pFunctionPoint* next, pFunctionPoint* point)
{
        int x1,x2,x,y1,y2,y;
        
        x1=(float)before->getRealX();
        x2=(float)next->getRealX();
        y1=(float)before->getRealY();
        y2=(float)next->getRealY();
        x=(float)point->getRealX();
        y=(float)point->getRealY();

        
        float d1= (float)sqrt(pow(float(x1-x),2)+ pow(float(y1-y),2));
        float d2= (float)sqrt(pow(float(x2-x),2)+ pow(float(y2-y),2));
        float d=(float)sqrt(pow(float(x2-x1),2)+ pow(float(y2-y1),2));
        if(d1+d2<=(d*1.1) && d1<=d && d2<=d)
                return true;
        return false;
}
double pGraphicalFunction::interpolateY(double m, int x1,int y1,int x)
{
        return m*(x-x1)+y1;
}

//----------------------------
//NEW METHODS
//----------------------------

//----------------------------
// Spline Methods
//----------------------------


        /*
        * clear the spline vectors
        */
        void pGraphicalFunction:: clearSplineVectors()
        {
                xSpline.clear();
                ySpline.clear();
        }

        /*
        Initiliaze xSpline and ySpline vectors
        */
        void pGraphicalFunction:: initializeSplines()
        {
                if(xKSpline==NULL)
                        xKSpline = vtkKochanekSpline::New();
                if(yKSpline==NULL)
                        yKSpline= vtkKochanekSpline::New();
                addSplinesPoints();

        }

        /*
        Add the (x,y) points of the function to the 
        spline
        */
        void pGraphicalFunction::addSplinesPoints()
        {
                xKSpline->RemoveAllPoints();
                yKSpline->RemoveAllPoints();
                wxNode *node= logicFunction->GetPointAt(0);
                pFunctionPoint* p;
                int i=0;
                while(node)
                {
                        p=(pFunctionPoint*)node->GetData();
                        xKSpline->AddPoint(i,p->getRealX());
                        yKSpline->AddPoint(i,p->getRealY());
                        i++;
                        node=node->GetNext();
                }
        }
        /*
         This Method adds the point calculated by
         the splines to the vectors
        */
        void pGraphicalFunction:: initializeSplineVectors()
        {
                double x=0,y=0,t,delta;
                int i,np,nps;
                //realPoints.DeleteC  

                np = logicFunction->getSizePoints();
                nps = 200;
                delta=( double ) ( np ) / ( double ) ( nps );
                for( i = 0; i < nps; i++ )
                {
                  t = delta * (double)i;
                  GetSplinePoint(t,x,y);
                  xSpline.push_back(x);
                  ySpline.push_back(y);
                }
        }
        /*
         get the spline point for t, in xKSpline and yKSpline
        */
        void pGraphicalFunction::GetSplinePoint(double t, double &x, double &y)
        {
                if (logicFunction->getSizePoints()==0)
                {
                        x = 0;
                        y = 0;
                }
                if (logicFunction->getSizePoints()>=2)
                {
                        x = xKSpline->Evaluate(t);
                        y = yKSpline->Evaluate(t);
                }
        }

//------------------------------
// Zoom Methods
//------------------------------

void pGraphicalFunction::zooming(int clickedX,int clickedY,int width)
{
        int xS,yS,x1,x2,y1,y2;
        setScales();
        xS=clickedX/_scaleX+_offsetX;
        yS=clickedY/_scaleY+_offsetY;
        //square
        x1=(clickedX-width)/_scaleX+_offsetX;
        x2=(clickedX+width)/_scaleX+_offsetX;
        y1=(clickedY-width)/_scaleY+_offsetY;
        y2=(clickedY+width)/_scaleY+_offsetY;

        int numberPoints=getSizePoints();
        pFunctionPoint* point;
        wxNode* p;
        bool inSquare=false,first=false;
        
        //if the user made a zoom
        if(zoomIn)
        {
                int i;
                for(i=0; i<numberPoints;i++)
                {
                        p=logicFunction->GetPointAt(i);
                        point=(pFunctionPoint*)p->GetData();
                        int rx=point->getRealX();
                        int ry=point->getRealY();
                        inSquare= rx>=x1 && rx<=x2; //&& ry>=y1 && ry<=y2;
                        if(inSquare)
                        {
                                if(!first)
                                {
                                        initialDrawingPoint=point;
                                        _offsetX=rx;
                                        _offsetY=ry;
                                        first=true;
                                }
                                finalDrawingPoint=point;
                        }
                }
        }       
        else
        {
                //We extend the range of vision in x and y,20 and 10 respectively
                if((_offsetX-20)>=0)
                {
                        _offsetX=_offsetX-20;
                }
                else
                        _offsetX=0;
                if((_offsetY-10)>=0)
                {
                        _offsetY=_offsetY-10;
                }
                else
                        _offsetY=0;
        }
}

        /*
        This method sets the offsets according with the point 
        clicked on the window
        @param offx: x-value of the point clicked
        @param offx: y-value of the point clicked
        Note: all the parameters are pixels
        Pre: screenX, screenY are set! with the actual data.
        Pos: Sets the value of minXshowed,minYshowed 
        */
        void pGraphicalFunction::setOffsets(int offx,int offy)
        {
                int xS,yS;

                setScales();
                
                xS=(offx-offsetPixelX)/_scaleX+_offsetX + minShowedX;
                yS=(offy-offsetPixelY)/_scaleY+_offsetY+ minShowedY;
                
                setOffsetX(xS);
                setOffsetY(yS);
                        
                //setMinShowedX(xS);
                //setMinShowedY(yS);

                setOffsetPixelX(offx);
                setOffsetPixelY(offy);
                //setMinShowed();
        }
        /*
        *  This method sets the minShowedX 
        *  and the minShowedY, accordig to the offset in
        *  x-axis and y-axis respectively
        *  pre: _offsetX>=0,_offsetY>=0
        *               screenX and screenY are set with the actual size of the window
        *               scaleX and scaleY are set to the actual size of the window
        * DEPRECATED!
        */
        void pGraphicalFunction::setMinShowed()
        {
                bool firstX=false,firstY=false;
                
                wxNode* node=logicFunction->GetPointAt(0);
                pFunctionPoint* p;

                //float middleWX=(((float)(screenX-100))/2)/scaleX; // JPRx
                //float middleWY=(((float)(screenY-50))/2)/scaleY; // JPRx
                
                //node=node->GetNext(); 
                while(node)
                {
                        p=(pFunctionPoint*)node->GetData();
                        int px=p->getRealX();
                        int py=p->getRealY();
                        int x=(px-_offsetX);//+middleWX;
                        int y=(py-_offsetY);//+middleWY;
                        if(!firstX && x>=0)
                        {
                                firstX=true;
                                setMinShowedX(px);
                        }
                        if(!firstY && y>=0)
                        {
                                firstY=true;
                                setMinShowedY(py);
                        }       
                        node=node->GetNext();
                }
        }

//-----------------------
// Persistence
//-----------------------

/*
 Save the points of the function
*/
void pGraphicalFunction::save(wxString fileName)
{
        
        logicFunction->save(fileName);

}
/*
 Load the points of a function 
*/
void pGraphicalFunction::load(wxString fileName)
{
        logicFunction->load(fileName);
        logicFunction->setUp();
        setMaxShowedX(logicFunction->getMaxX());
        setMinShowedX(logicFunction->getMinX());
        setMaxShowedY(logicFunction->getMaxY());
        setMinShowedY(logicFunction->getMinY());
}
        
//--------------------------
//GETTERS AND SETTERS
//---------------------------
void pGraphicalFunction::setActual(bool act)
{
  ifActual=act;
}
bool pGraphicalFunction:: getActual()
{
        return ifActual;
}
void pGraphicalFunction::setScaleWay(int typeS)
{
  scaleWay=typeS;
}

int pGraphicalFunction:: getScaleWay()
{
 return scaleWay;
}


/*
* SCREEN
*/
void pGraphicalFunction::setScreenX(int scrX)
{
  this->screenX=scrX;
}
int pGraphicalFunction::getScreenX()
{
  return this->screenX;
}
void pGraphicalFunction::setScreenY(int scrY)
{
  this->screenY=scrY;
}
int pGraphicalFunction::getScreenY()
{
  return this->screenY;
}


/*
* STARTS
*/
void pGraphicalFunction::setStartX(double aStartX) {
        
        logicFunction->setStartX(aStartX);
        this->_startX =logicFunction->getStartX();
}

double pGraphicalFunction::getStartX() 
{
        return logicFunction->getStartX();
}

void pGraphicalFunction::setStartY(double aStartY) 
{
        logicFunction->setStartY(aStartY);
        this->_startY = aStartY;
}

double pGraphicalFunction::getStartY() {
        return logicFunction->getStartY();
}
/*
* ENDs
*/
void pGraphicalFunction::setEndX(double aEndX) 
{
        logicFunction->setEndX(aEndX);
        this->_endX = aEndX;
}

double pGraphicalFunction::getEndX() {
        return logicFunction->getEndX();
}

void pGraphicalFunction::setEndY(double aEndY) {
        logicFunction->setEndY(aEndY);
        this->_endY = aEndY;
}

double pGraphicalFunction::getEndY() {
        return logicFunction->getEndY();
}
/*
 * SCALES
 */
void pGraphicalFunction::setScaleX(double aScaleX) 
{
        logicFunction->setScaleX(aScaleX);
        this->_scaleX = aScaleX;
}

double pGraphicalFunction::getScaleX() 
{
        return this->_scaleX;
}

void pGraphicalFunction::setScaleY(double aScaleY) 
{
        logicFunction->setScaleY(aScaleY);
        this->_scaleY = aScaleY;
}

double pGraphicalFunction::getScaleY() {
        return this->_scaleY;
}
/*
 * Mins
 */
void pGraphicalFunction::setMinX(double aMinX) 
{
        logicFunction->setMinX(aMinX);
        this->_minX = aMinX;
}

double pGraphicalFunction::getMinX() 
{
        return logicFunction->getMinX();
}

void pGraphicalFunction::setMinY(double aMinY) 
{
        logicFunction->setMinY(aMinY);
        this->_minY = aMinY;
}

double pGraphicalFunction::getMinY() {
        return logicFunction->getMinY();
}
/*
 * MAXS
 */
void pGraphicalFunction::setMaxX(double aMaxX) 
{
        logicFunction->setMaxX(aMaxX);
        this->_maxX = aMaxX;
}

double pGraphicalFunction::getMaxX() 
{
        return logicFunction->getMaxX();
}

void pGraphicalFunction::setMaxY(double aMaxY) 
{
        logicFunction->setMaxY(aMaxY);
        this->_maxY = aMaxY;
}

double pGraphicalFunction::getMaxY() {
        return logicFunction->getMaxY();
}

/*
 * OFFSETS
 */
void pGraphicalFunction::setOffsetX(double aOffsetX) 
{
        logicFunction->setOffsetX(aOffsetX);
        this->_offsetX = aOffsetX;
}

double pGraphicalFunction:: getOffsetX() 
{
        
        return this->_offsetX;
}

void pGraphicalFunction:: setOffsetY(double aOffsetY) 
{
        logicFunction->setOffsetY(aOffsetY);
        this->_offsetY = aOffsetY;
}

double pGraphicalFunction:: getOffsetY() {
        return this->_offsetY;
}

/*
 * TYPE
 */
void pGraphicalFunction:: setType(int aType) 
{
        logicFunction->setType(aType);
        this->_type = aType;
}

int pGraphicalFunction :: getType() {
        return this->_type;
}

/*
 * validPoint
 */
int pGraphicalFunction :: getValidPointRange()
{
        return validPointRange;
}

void pGraphicalFunction :: setValidPointRange(int theRange)
{
        logicFunction->setValidPointRange(theRange);
        validPointRange = theRange;
}
/*
* Returns the number of points that the function
* has
*/
int pGraphicalFunction :: getSizePoints()
{
        return logicFunction->getSizePoints();
}

/*
* Sets the color points of the function by teh given parameter
* @param colorVector Is the color points vector to set
*/
void pGraphicalFunction :: setColorPoints(std::vector<pColorPoint *> &colorVector)
{
        f_colorPoints.clear();
        int i = 0;      
        while(i<(int)(colorVector.size()))
        {
                f_colorPoints.push_back(colorVector[i]);                
                i++;
        }
}

/*
* Gets the color points of the function in the given parameter
* @param colorVector Is the color points list to get the points
*/
void pGraphicalFunction :: getColorPoints(std::vector<pColorPoint *> &colorVector)
{
        int i = 0;      
        while(i<(int)(f_colorPoints.size()))
        {
                pColorPoint * originaslPoint = f_colorPoints[i];
                pColorPoint * copyPoint = new pColorPoint(originaslPoint->getRealX(), originaslPoint->getColor(), originaslPoint->isTemporalColor());
                colorVector.push_back(copyPoint);               
                i++;
        }
}