Re: [ROOT] TTRap

From: Makonyi Karoly (Karoly.Makonyi@hawk.phys.klte.hu)
Date: Fri Jun 25 2004 - 12:29:46 MEST


Dear Andrei,

Thanks!
Karoly


On Fri, 25 Jun 2004, Andrei Gheata wrote:

> Hi Karoly,
> 
> Phi and theta are the angles (azimutal/polar) of the axis that passes 
> through the "centers" of the trapezoid Z faces. If theta is zero this 
> axis is parallel with the Z axis no matter what phi is. To tilt your 
> trapezoid you have to define theta>0. You have more freedom in defining 
> such a shape by using TGeoArb8 instead (you can define one-by-one all 
> vertices - see /geom/src/TGeoArb8.cxx)
> 
> Regards,
> Andrei
> 
> Makonyi Karoly wrote:
> 
> >Hi,
> >I tried to define a TTRAP shape with not zero "phi".
> >If the theta is zero it is no matter what is the phi it doesn't tilt the
> >shape. And I need a tilted TTRAP shape ...
> >
> >What is the solution?
> >k.
> >
> >
> >  
> >
> 



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