Re: multigen-performer

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Mark Baranowski (baranowski++at++marklynn.demon.co.uk)
Thu, 06 Feb 1997 13:36:24 GMT

On Thu, 6 Feb 1997 17:40:02 -0530 (IST), Swapnil wrote:
>Hi,
>
>Is there any way to find the DOF origin from Performer after DOF gets loaded
>in scene by "pfdLoadFile()"???
>
>I want to have this so that i can rotate the DOF object arround local origin
>instead of world.
>
>I need Urgent help.
>
>thanks.
>-swapnil

You need to use the flt loaders callback mechanism. There should be a
readme file with the loader (or it's header file - can't remember)
which explains how to do use it.

Basically, you have to utilize the callback to get the 'put' and
'inverse put' matrices which localize the DOFs coordinate system. You
need to store this information for each pfDCS node, then when you want
to update it, you update with the matrix R where

R = [Put * [T * [R * [S * InvPut]]]]

where T, R and S are Translation, Rotation and Scale as required.

Regards.

Mark.

-- 
Mark Baranowski at work (baranowski++at++marklynn.demon.co.uk)
Pera, VR Division. Melton Mowbray, Leics. LE13 0PB. UK.
Tel: +44 1664 501501, Fax: +44 1664 501553
All opinions expressed are my own and should not be viewed
as representing my employer unless stated otherwise.
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