Hi If you have not done so I would recommend grabbing the PDF from http://www.osgbooks.com/ especially http://www.osgbooks.com/books/osg_qs.html they are free in PDF form, the Quick start guide will answer many of the basic newbie questions
Also check out the over 140+ examples that come with OSG's source and see http://www.openscenegraph.org/projects/osg/wiki/Support/Tutorials http://www.openscenegraph.org/projects/osg/wiki/Support/UserGuides/Examp les http://www.openscenegraph.org/projects/osg/wiki/Support/UserGuides http://www.openscenegraph.org/projects/osg/wiki/Support/FAQ http://www.vis-sim.com/osg/index.htm Also check mail archives as many basic question have been answered many time See http://www.mail-archive.com/[email protected]/ 1) Y is North is 0.0 Y+ into the Screen, X is East X+ to right, and Z is UP 2) All nodes have automatically calculated Bounding spheres ( when you add children), Drawables / Geometry have bounding boxes 3) Basic collision detection Is done with line segments, if you want geometry to geometry the you may need to write your own or find a tool kit that's out there Gordon Tomlinson Product Manager 3d Technology Overwatch(r) An Operating Unit of Textron Systems -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Priyank Jain Sent: Tuesday, November 24, 2009 12:18 AM To: [email protected] Subject: [osg-users] NewB questions about osg Hi, I just started using openScenegraph and it has been pretty smooth for me till now. I am making a simple racquet-ball game for my VR class (using a CAVE system). I have some basic questions to ask.. 1. What coordinate system does OSG follow ? Right handed, I presume ? Also, x points to East ? Y up or into the screen ? I couldn't find the thumb diagram on the website. Can you guys please refer me to the right convention or link ? 2. How do I generate Bounding box/ bounding sphere for a given box/ sphere geometry? Can this information be embedded in the model and extracted using any of the plugins ? 3. Is there something pre-defined for collision detection-resolution wrt Bounding box and bounding sphere in osg ? I am exploring ways to handle the collision between the wall and the ball and not sure if there are things already built-in open scenegraph that I can use or do I have to write code to handle that ? I'd appreciate any help. Thank you! /Priyank ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=20198#20198 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
