Re: How to build Billboard objects

New Message Reply Date view Thread view Subject view Author view

Angus Dorbie (dorbie++at++bitch.reading.sgi.com)
Thu, 19 Sep 1996 19:12:09 +0100


On Sep 19, 5:38pm, Duvideo wrote:
> Subject: How to build Billboard objects
> Hi,
>
> The town example loads Billboards directly from file.
> I noticed that when loading tree1.flt into perfly it has already a
> billboard behaviour.

This is because the flight file supports billboarding and the flight loader
builds billboards into a performer scene graph when it sees this.

>
> How can I build a billboard without programming it?

Use a format and loader which _both_ support this.

> Can it be done with Alias|Wavefront or do I need another modeler?

Looks like you new the answer to the previous question all along :)
I don't know what the A|W loader supports.

> Can I program a billboard and save it to a file with Performer?
>

Yep.

> What is the best solution?

IMHO use a format & loader which supports what you want.

Another popular trick is 'database overloading' :).
By this I mean you use a comment field, name or other model
property which will end up in the performer scene graph or
be passed through a loader callback and use this to identify
the element you want to billboard, environment map change
transparency of or whatever and then modify your application to
intercept/find this in the scene graph and make the change you want.

WARNING, misused it can lead to horrible situations like infantrymen
called "TREE" in your database.

>
>
> thanks
> Duvideo
> =======================================================================
> List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com
>-- End of excerpt from Duvideo

=======================================================================
List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
            Submissions: info-performer++at++sgi.com
        Admin. requests: info-performer-request++at++sgi.com


New Message Reply Date view Thread view Subject view Author view

This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:53:34 PDT

This message has been cleansed for anti-spam protection. Replace '++at++' in any mail addresses with the '@' symbol.