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How to select objects with NEG volume ?
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11-24-2012, 05:16 PM
Post: #1
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How to select objects with NEG volume ?
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. |
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11-24-2012, 05:54 PM
Post: #2
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RE: How to select objects with NEG volume ?
ggaliens,
What is an object with NEG volume and how do you get that kind of object??? oort |
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11-24-2012, 06:35 PM
Post: #3
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RE: How to select objects with NEG volume ?
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. |
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11-24-2012, 10:29 PM
Post: #4
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RE: How to select objects with NEG volume ?
I think I have used Invert to fix objects that are inside out in the past. I can't check right now...
 oort |
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11-25-2012, 02:05 AM
Post: #5
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RE: How to select objects with NEG volume ?
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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