AutoCAD R12/R13/R14 Archive

*~, ~ -------- Nic --------
Message 1 of 2 (23 Views)

Help needed - Solid Modelling Materials

23 Views, 1 Replies
12-14-1999 03:18 AM
How can I assign attributes to a Material such as Density, Material Cost Per
Weight etc?
*Shinn, Dennis
Message 2 of 2 (23 Views)

Re: Help needed - Solid Modelling Materials

12-22-1999 09:29 PM in reply to: *~, ~ -------- Nic --------
On Tue, 14 Dec 1999 11:18:43 -0000, "~ -------- Nic -------- ~"

>How can I assign attributes to a Material such as Density, Material Cost Per
>Weight etc?

This sort of mass property information is not *directly* obtainable
from R113,14,2000 ACIS solids. What you have to do is run the
massproperties command, elect to write the data to a file, then read
it back in doing the conversion calcs within an AutoLISP routine.
Attaching it to the solid object itself might be accomplished with
extended entity data although I've never attempted it. I usually just
calc the volume (cubic yards of concrete in my case) and weight then
post it to the drawing.

I can send you a copy of the routine I used for this - it was
contributed quite some time ago by someone in another newsgroup.
You'll have to edit it to produce the results you need.

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