I've done something like that.
Each time I change the text, I recompute the geometry (quad) based on the
Text's Drawable getBound().
It works for plane aligned text (xy, xz or yz). If you want to do that for
screen aligned text, you'll probably have to look osgText code to have the
exact size of the Text in screen coordinates.
I would not use a billboard in your case, since you'll find difficult to have a
billboard with a center of rotation that match with your text (especially if
the text is dynamic). Try of quad in a HUD, with screen coordinates extracted
from your text, and something smart with z-buffer parameters to have your text
over your quad :)
Luc
Luc FRAUCIEL - BRGM
Unité Calcul, 3D et réalité virtuelle
Service Systèmes et Technologies de l'Information
3, av C. Guillemin BP 36009 - 45060 Orléans Cedex 2, France
Tél. 02 38 64 35 65
Fax 02 38 64 39 70
________________________________
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la part de Vincent
Bourdier
Envoyé : jeudi 10 juillet 2008 09:24
À : osg
Objet : Re: [osg-users] osgText background
Just a little up
No one has ever tried to put a background on a osgText ?
Thanks
Vincent.
2008/7/9 Vincent Bourdier <[EMAIL PROTECTED]>:
Hi all,
I'm looking at a way to put a geometry (planar surface) as
background of an osgText...
I was thinking on a mix between billboard geode, and something
else to manage the geometry to have the size constant in screen coordinates...
but no way to do it as simply as osgText !
Is there any implementation approaching what I intend to do ? I
hope yes...
else...
Am I obliged to implement my self something from zero ? any
idea to do it more faster ?
Is it interesting for OSG to have this as a new feature for
osgText::text ?
thanks,
regards,
Vincent
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