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symmetrical pattern

Pioneer
Pioneer

Hi,

 

When I use the pattern feature command in modelling there is a symmetrical option available for a rectangular pattern, but it is not there for a circular pattern.

Could be handy....

3 REPLIES

Re: symmetrical pattern

Siemens Phenom Siemens Phenom
Siemens Phenom

But symmetrical about what?

 

The symmetrical option when creating a Rectangular Pattern is based on 'mirroring' about an axis.  I'm not sure what would be the equivalent when creating a Circular Pattern.

John R. Baker, P.E. (ret)
EX-Product 'Evangelist'
Irvine, CA

Re: symmetrical pattern

Pioneer
Pioneer

Hi John;

 

 

I mean, symmetrical to a plane that connects the first position from a hole (orange hole) to the centerpoint (see attachment). Indeed it is just a mirror feature that you use but why is it available in a rectangular pattern and not in a circular. Doesn't seem logical

Re: symmetrical pattern

Genius
Genius
It's available because a rectangular pattern requires you to define 1 or 2 vectors, about which it must be fairly simple to apply symmetry (perpendicular to the pattern's direction vector(s)).

The circular pattern is a bit different because the plane of symmetry could be 1 of 2 perpendicular axes since you're defining an axis of rotation. Say you use Z as the axis of rotation, do you mirror about X or Y?

I agree completely with you, but the dialog would require more input from the user, if the code would even allow for it. Call GTAC and log an ER - that's about all you can do for now and hope it eventually gets implemented.
-Tim