Re: TView::WCtoNDC

From: Dmitri Litvintsev (litvinse@cdfsga.fnal.gov)
Date: Mon Sep 27 1999 - 23:35:25 MEST


> > are visible with either rotation angle.
> > 
> >  Myself see no reason for a new class.
> > 
> >   May be one should contribute  a new method (approach)
> > 


Hi Rootters, 

What really needs to be added to TView's methods is the following:

//______________________________________________________________________________
void TView::NDCtoWC(Float_t* pn, Float_t* pw)
{
//*-*-*-*-*-*-*Transfer point from normalized to world coordinates*-*-*-*-*
//*-*          ===================================================        *
//*-*                                                                     *
//*-*    Input: PN(3) - point in world coordinate system                  *
//*-*           PW(3) - point in normalized coordinate system             *
//*-*                                                                     *
//*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

  pw[0] = fTback[0]*pn[0] + fTback[1]*pn[1] + fTback[2]*pn[2]  + fTback[3];
  pw[1] = fTback[4]*pn[0] + fTback[5]*pn[1] + fTback[6]*pn[2]  + fTback[7];
  pw[2] = fTback[8]*pn[0] + fTback[9]*pn[1] + fTback[10]*pn[2] + fTback[11];
}

Sometimes it is needed

regards,
Dmitri Litvintsev



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