Re: subclassing pfGroup

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Randy Stiles (stiles++at++aic.lockheed.com)
Wed, 27 Mar 1996 21:43:48 -0800

Hi,

There are examples of subclassing Performer nodes in
the source code for libpfiv, the Inventor loader. Jim
Helman subclassed pfDCS for Inventor-like rotors, etc.

<stiles++at++gabriel> pwd
/usr/share/Performer/src/lib/libpfdb/libpfiv
<stiles++at++gabriel> ls
Makefile Pendulum.h Rotor.h Shuttle.h pfiv.C
Pendulum.C Rotor.C Shuttle.C pfSoClasses.h pfivdefs.h

You will probably have to look in the Inventor loader
code anyways, since I found you have to modify it to
deal with SoWWWAnchor properly if your are using Inventor 2.1
to load VRML files (recommended). If your system admin
is like most, he/she did not install the libpfdb source
code from the Performer 2.0 CD since it is not installed
by default. So you will want to use swmgr or inst to install
it from the Performer 2.0 CD.

performer_dev.src.loader 03/03/96 Performer2.0 Loader Code

-Randy

Swaminathan wrote:
>
> Hi, I implementing a vrml viewer using Performer and the inventor loader.
> I'm subclassing pfGroup into pfWWWinline and pfWWWAnchor nodes to help
> me have full vrml functionality. Unfortunately, I dont have much
> information on subclassing nodes, other than the instances in the pfiv
> source code. A specific question is whether to include other functions
> besides pfWWWInline::app(pfTraverser *) as detailed in the inventor
> loader. Pointers to source code examples of subclassing and comments in
> general are greatly appreciated.
>
> bye
> Swami
>
> P.S. I've added name, and bounding box fields to extend the pfGroup node
> to be a pfWWWInline node. When I load in the inlines, I attach the
> subgraphs to the pfWWWinline node using AddChild().
>
> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
> v Swaminathan Narayanan ^
> v swami++at++evl.eecs.uic.edu ^
> v Office: 996-3002 ^
> v Home: 850-3725 ^
> v Fax: 413-0447 ^
> v http://www.eecs.uic.edu/~snarayan ^
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

-- 
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// Lockheed Martin Advanced Technology Center 3251 Hanover Street 
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