Re: graphical depth of an object

J. Rieling (jr@ri.dasa.de)
Wed, 7 Jul 1999 14:47:37 +0200 (MEST)


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[sorry if this is posted twice. but our mailserver/firewall is kind of
broken at the moment, and i prefer to repeat this message.]

hi rene, hi all,

On Wed, 7 Jul 1999, Rene Brun wrote:

> Simply do:
> c1->RedrawAxis();
> at the end of the macro or after the macro execution.

true, that works for the axis.

but it does not work for grid lines. i suppose there won't be
a c1->RedrawGrid()... and if there is, that wouldn't be very OO.
so let me re-phrase my question:

is there a concept of graphical depth inisde root ?

the only thing i see that comes close to that is the sequence of objects
in the display list.

as far as i know (though i couldn't spend much time on it) there is only
TObject::Pop() to manipulate this list (*).
manipulating that list makes sense if other already drawn objects
are not cleared if a new one is drawn.

(probably there are a few more subtilities with inherited/nested objects
because histogram->GetXaxis->Pop() doesn't work.)

cu,

j"org.

(*) i realize there is a TVirtualPad::GetListOfPrimitives() which
returns a TList *, but the TList is rather counterintuitive to handle
if you simply want to do a object->SetGraphDepth(1) or whatever.

__________________________________________________________________________
dr. j. rieling / daimlerChrysler aerospace, orbital systems & operations
fon +49 421 5395643 fax +49 421 5395127 joerg.rieling@ri.dasa.de

- --
__________________________________________________________________________
dr. j. rieling / daimlerChrysler aerospace, orbital systems & operations
fon +49 421 5395643 fax +49 421 5395127 joerg.rieling@ri.dasa.de

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