Re: Transparent Bin Sorting for Ortho Projection

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From: Gordon Tomlinson (gordon++at++paradigmsim.com)
Date: 02/15/2000 15:26:47


HI Bob

You could create your own channel draw bin
and add you geometry to it ( pfGSetDrawBin)
and then sort this bin by setting the bin
draw order of the geosets ( pfGSetDrawOrder )

'Bwana' Bob Buckley wrote:
>
> I have a channel that is setup as an ortho projection for map rendering.
> I add both opaque and transparent objects into the scene for this
> channel. The sorting order for the transparent bin is back to front
> based upon the distance from the viewpoint to the center of the bounding
> sphere of each object. My problem is the sorting is done on range not on
> depth. In my application I have no way of designating a particular
> projection for an object. Hence, no way to specifically zero out the x
> and z values of the bounding volumes center. Anyone know how to get a
> depth (Y axis) sort out of Performer? Any cheap and dirty ways to handle
> this situation?
>
> Thanks.

-- 

Gordon.

______________________________________________________________

Gordon Tomlinson | Multigen - Paradigm Inc Vega Software Engineer | Suite 400, 14900 Landmark Blvd Email: gordon++at++paradigmsim.com | Dallas, Texas 75240, USA Tel: 972 960 2301 | Fax: 972 960 2303 ______________________________________________________________

'Smoke me a kipper, I'll be back for breakfast' ______________________________________________________________

NOTE: All opinions here within this email are solely mine and DO NOT reflect those of MultiGen Paradigm or any other employee.


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