On 08/20/2012 09:00 AM, Peterakos wrote:
Hello.
In the example osganimationviewer in main there is the following line:
osg::Group* node =
dynamic_cast<osg::Group*>(osgDB::readNodeFiles(arguments));
How safe is this if i use only 1 model in arguments and it is not Group ?
osgDB::readNodeFiles inserts a group at the root if there's more than
one model loaded, but not when only a single model is loaded. There's a
(rather slim) chance that your one model might not contain a Group (or
Group descendant) at the root and that the dynamic_cast would result in
a NULL. If you wanted to be absolutely sure, you could put in a check
for this.
Practically, almost every useful model (especially models with
animations) will have some kind of group at its root.
--"J"
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