Every scene graph I have worked with over the years provides one or more motion/manipulator models to allow users to have the ability to move around out the box
BUT most of these are fairly basic and generic. In over 20 years I have never used one of the provided motion motions/manipulators in an end application I have always written models specific to the needs of the application and in my experience this is true for most others. As every application has it own needs and requirements of a motion model, take a flight simulator or driving simulator there are no mouse's in them so the models as in OSG would not really do me no good. I have a great model for flying a Euro fighter but its not going to do you any good walking around an Urban simulation... When I'm teaching folks about scene graphs and particular API ( OSG, Vega, Vega Prime , Performer, etc ) one of the first things I do is shown them how to go about writing their own motion model After all OSG is a frame work,(a sophisticated frame work) to allow you to build a complex interactive synthetic worlds and only know how you need to move around your synthetic world and thus OSG provides some basic but usable models to get you moving. But this boils down to this , if the motion models in OSG are not suitable for you then simply write your own, and may be consider contributing the model to OSG.. You have the source so you can see exactly how to create your own.. Best Regards Gordon __________________________________________________________ Gordon Tomlinson Email : gordon.tomlinson @ overwatch.com YIM/AIM: Gordon3dBrit MSN IM : Gordon3dBrit @ 3dSceneGraph.com __________________________________________________________ Telephone (Cell): (+1) 214-477-8914 Telephone (Work): (+1) 703-437-7651 "Self defence is not a function of learning tricks but is a function of how quickly and intensely one can arouse one's instinct for survival" - Master Tambo Tetsura -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of lin Sent: Thursday, March 08, 2007 8:41 PM To: [email protected] Subject: [osg-users] A better Manipulator! There are several Manipulators in osgProduce::Viewer, but frankly speaking they are not very well. A good Manipulator is a base function in 3d application, but the osg beginners can not write a good Manipulator. Can osg provide a better manipulator like google earth's manipulator in the future. ---------------------------------------------------------------------------- -- 网易邮箱精准过滤超过98%的垃圾邮件 www.126.com
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