[osg-users] manipulating vertices from a node loaded byReadNodeFile()

[Bokhorst,Rene R.]

thanks for replying, but the problem is that the osg::Node* returned by ReadNodeFile() is not a osg::Geode().

________________________________

From: osg-users-bounces at lists.openscenegraph.org on behalf of Serge Lages
Sent: Thu 6/26/2008 4:07 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] manipulating vertices from a node loaded byReadNodeFile()


Hi Rene,

>From you geodes, take the drawables, cast them into geometries and recover the vertex list with getVertexArray.


On Thu, Jun 26, 2008 at 3:56 PM, Bokhorst,Rene R. <r.bokhorst at fontys.nl> wrote:


	Hey there,
	
	I've been browsing the mail archive to find the answer to my question but I haven't found anything at all. I basically want to manipulate the vertices of a model loaded by the osgDB::ReadNodeFile() function. ReadNodeFile() returns a osg::Node. I was hoping this might actually be a osg::Geode, but apparently it isn't.
	
	Reason I want to do this is because I have 1600 different building models. But all of these building models are already positioned in their correct position and rotation (instead of each building being built around 0,0,0). So basically if I load my 1600 models and all position them on 0,0,0 I have a complete and perfectly aligned town. I want to move every building back to 0,0,0 so that I can re-use them. I've already used osg to find their position by finding the center of their bounding box. And now I want to substract that position from the vertices of every building and save them. Anyone know how to achieve this?
	
	Thank you in advance,
	
	Rene
	
	
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-- 
Serge Lages
http://www.tharsis-software.com <http://www.tharsis-software.com/>  


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