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Full Version: How to select objects with NEG volume ?
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How to select objects with NEG volume ?

Can I do it ? Is it hidden in there or missing ... or I'm blind ?

Please pick one.
ggaliens,
What is an object with NEG volume and how do you get that kind of object???

oort
Object with negative volume is very simply ... likely inside-out or has some HOLES.

Wings3D is a very good tool for analysis. Often when I import objects form other packages ... they are not "watertight". I doubt I'm the only one experiencing this.

I use Wings3D as a beautification tool, a vetting tool, etc in more complicated workflows.

Right now ... I want to import a few items from Surface evolver.

OORT ... Sea-Shells might ultimately import with near sero volume ... depends on whose shells they are.
I think I have used Invert to fix objects that are inside out in the past. I can't check right now... Sad

oort
Yeah ... that's actually a no-brainer Oort. But if you have a set of 400 shapes and some are inverted and some are not ... how do you pick which ones to invert to get them all in a consistent state ?

My assertion is that it can be done with a Volume test.

You can't invert them all by hand ... too many too pick and too much object vs objection occlusions for that anyway.

Seems like a missing "BY" command for objects.
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