[Sidefx-houdini-list] houdini .geo file format - cylinders

Mark Elendt mark at sidefx.com
Mon Aug 21 22:15:08 EDT 2006


On Tuesday Aug 22 at 11:50, Steven Manos wrote:
> i have a bunch of cylinders that have been exported from houdini as a
> .geo file format, looking something like this..
> 
> PGEOMETRY V5
> NPoints 6 NPrims 6
> NPointGroups 0 NPrimGroups 0
> NPointAttrib 0 NVertexAttrib 0 NPrimAttrib 0 NAttrib 0
> 402.236 436.4335 69.82764 1 
> ...
> Run 6 Tube
>  0 1 open -9.4683 -33.50822 23.48511 98.53467 36.8893 92.35854 -28.29371
>  22.77554 21.08887
> ....
>       beginExtra
>       endExtra
> 
> 
> I am a little lost as to the interpretation of the 9 values used to
> represent the cylinder - looked around the documentation but nothing so
> far. anyone got any ideas?

They represent the 3x3 rotation/scale matrix.  The translates are
supplied by the point reference.




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