Is the 'particle' protocol currently implemented in the RiGtoPlugin ?

[ben-to]

Hi all,
Just wanted to ask a quick question about the state of the the
current open-gto source.
Is the 'particle' protocol implemented in the RiGtoPlugin? We've had
success with 'polygon' and 'catmull-clark' types (i.e have been able
to render some polys and subds straight out of gto files), but all the
particle gto files I've tried rendering so far produce no result...
I haven't seen any warnings or errors, but I haven't seen any
particles either :)


here's a dump from one of the files I've tried:
GTO file version 3, 9 strings, little endian binary, indexed
object "particleShape1" protocol "particle" v1
component "points"
property int[1][1791] "id"
property float[3][1791] "position"
property float[3][1791] "velocity"

does the .gto need more properties to be a renderable entity ? Or are
RiPoints just not currently handled by the RiGtoPlugin. If it's the
latter this might be something we could commit some time to

thanks

Ben

ben toogood
www.aardman.com

[Christopher Horvath]

Hi Ben.

We don't currently implement anything for particles directly for
RiGtoPlugin, primarily because in the normal production case, you
almost always want to instance geometry or perform other
transformations on the data prior to creating renderable entities.
This is typically accomplished with some sort of intermediary
"instancing" software or plugin.

We are diving into improvements and libraries built on top of GTO that
will help you with this type of problem, so please keep visiting the
GTO sites in the meantime.

Thanks,

Chris Horvath

[ben toogood]

Hi Chris,
 thanks for the info - we might go ahead and add very basic support for RiPoints to the RiGtoPlugin at our end, just to get us going. We'd be happy to contribute this back if it'd be of use to any one else.

cheers
ben

> Date: Tue, 24 Nov 2009 14:21:07 -0800
> Subject: Re: Is the 'particle' protocol currently implemented in the RiGtoPlugin ?
> From: black...@gmail.com
> To: open-gto-...@googlegroups.com