Hi Fabio,
You say the problem fails.. but in what way?
What hardware, OS, OSG versions are you working with?
The OSG doesn't have a ply loader itself, is this your own loader.
As for techniques for handling large models, I'd suggest switching off
display lists, and then breaking the model down into smaller geometry
blocks, of something like 10,000 vertices/triangles each and use
VBO's.
Robert.
On Mon, Apr 21, 2008 at 3:35 PM, fabio riot <[EMAIL PROTECTED]> wrote:
> Hi all
> I'm new in OSG, so I need some advices to address my work.
> I need to visualize a large dimension laser scanner file (.ply).
> it contains about 6.000.000 of points and 12.000.000 of triangles
> (point's connections).
> I'm not able to view the entire file with a single node scenegraph
> (the program fails):
>
>
> osg::Node* node = NULL
> node = osgDB::readNodeFile("entire_file.ply"); //with my plugin
> osg::ref_ptr<osg::Group> root = new osg::Group();
> root->addChild(node);
> viewer....etc
>
>
> So I have broken the "laser cloud" in more little pieces
> (at example 12 pieces each one with 500.000 points and about 1.000.000
> triangles)
> and I have created a scenegraph with 12 node
>
>
> osg::ref_ptr<osg::Group> root = new osg::Group();new osg::Group();
> root->addChild(node1);
> root->addChild(node2);
>
> .....
>
> root->addChild(node12);
>
> where each node contains one pieces of data
>
> In this way I can load and view the all strucure...but the loading
> time is very very long (60 min)
>
> I'would like to know if this is the correct way to tackle my problem
> or if there's a clever way...Thanks
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> osg-users@lists.openscenegraph.org
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>
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