www.hesicong.net wrote on Monday, March 05, 2007 9:14 AM:
> Hello,
> I load some data from a 3ds file using osgDB::readNodeFile() function,
> and store the Node to osg::Node* machineNode.
> Then I want to get all the vertex data from this Node. I tried to
> convert the point directly to osg::Geometry*, but I get wrong data.
> Here is my code:
> osg::Node* machineNode=NULL;
> machineNode=osgDB::readNodeFile("F:/machine.3DS");
>
> osg::Geometry* geo=(osg::Geometry*)machineNode;
> osg::Array* ar=geo->getVertexArray();
> int size=ar->getDataSize();
> size variant is a negative number, so I say the data should be wrong.
> Please tell me how to get the vertex data from this node, thanks very
> much!
osgDB::readNodeFile() returns an osg::Node, but osg::Geometry is not a
Node, it is a osg::Drawable. So, at the very least, readNodeFile in this
case will return an osg::Geode (which is a Node, and will contain
Drawables which might be Geometry), but I don't know any thing about the
OSG 3DS reader, so it might return a more complicated structure of Nodes
than that.
--
Bryan Thrall
FlightSafety International
[EMAIL PROTECTED]
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