QGGraph.cc

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#include "QGGraph.hh"
#include "TH1F.h"
#include "TList.h"
 
ClassImp(QGGraph)
 
QGGraph::QGGraph() :
TGraph(), QGPlot()
{
}
 
QGGraph::QGGraph(const QGGraph &graph) :
TGraph(graph), QGPlot(graph)
{
}
 
QGGraph::~QGGraph()
{
}
 
const char *QGGraph::GetName() const
{
    return TGraph::GetName();
}
 
void QGGraph::Reset()
{
    SetPoints(0, 0, 0);
}
 
void QGGraph::SetPoints(Int_t n, const Double_t *x, const Double_t *y)
{
    // the following is copied from the TGraph destructor
    delete [] fX;
    fX = 0;
    delete [] fY;
    fY = 0;
    if (fFunctions) {
        fFunctions->SetBit(kInvalidObject);
        TObject *obj;
        while ((obj = fFunctions->First())) {
            while (fFunctions->Remove(obj));
            delete obj;
        }
        delete fFunctions;
        fFunctions = 0;
    }
    delete fHistogram;
    fHistogram = 0;
    
    // the following is copied from the TGraph constructor
    if (!x || !y) {
        fNpoints = 0;
    } else {
        fNpoints = n;
    }
    if (!CtorAllocate()) return;
    n = fNpoints*sizeof(Double_t);
    memcpy(fX, x, n);
    memcpy(fY, y, n);
}