yang686526

dwg without layout extension information

dwg without layout extension information
hi,
trying to getting the bounding box in wcs of a dwg i found some files without information about layout extension.
i tried getting layout extension information using two methods:
1)
min = playout->getlimmin();
max = playout->getlimmax();
2)
playout->getgeomextents( layext );
and often i get min & max = (0.0, 0.0) and the same for layext.
dwg files can not contain this information?
is there a way to force dwgdirect to calculate them?
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar
# 14th february 2006, 06:11 am

moderator join date: mar 2002
posts: 2,994
extents information saved in file may be incorrect. to force extents calculation you can use:
use getgeomextents() of layout block.
sergey slezkin

sslezkin
# 14th february 2006, 06:31 am

registered user join date: feb 2006
location: pisa
posts: 69

quote:
originally posted by sergey slezkin
use getgeomextents() of layout block.
this function returns extensions in model coordinates, is it right?
then to have them in wcs do i need to use view matrix?
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar
# 14th february 2006, 06:51 am

moderator join date: mar 2002
posts: 2,994
getgeomextents() for layout block returns extents in world coordinate system (wcs).
sergey slezkin

sslezkin

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extents information saved in file may be incorrect. to force extents calculation you can use:
use getgeomextents() of layout block.
sergey slezkin

quote:
originally posted by sergey slezkin
use getgeomextents() of layout block.
this function returns extensions in model coordinates, is it right?
then to have them in wcs do i need to use view matrix?
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============
getgeomextents() for layout block returns extents in world coordinate system (wcs).
sergey slezkin