extract geometry
extract geometry
(OP)
Hi All,
I have a few questions regarding the "extract geometry" feature.
1. What is the difference between "extract" and "multiple extract"? I have read the documentation but I just can't seem to get my head around it. Would someone care to enlighten me?
2. In UG there exists "extract geometry" with an "extract region" sub option that allows you to to essentially extract a region of surfaces by picking one internal surface and then picking a series of boundary surfaces. The system then automatically selects all the surfaces in between the first surface you pick and the boundary surfaces. Is there a way to achieve similar results in Catia? I have played around with the different propagation types but in the end I either get too many surfaces(point continuity) or I spend a lot of time picking individual surfaces( no propogation). Is what I am trying to achieve even possible in Catia, and if so, how should I go about it?
Thanks in advance, thixoguy
I have a few questions regarding the "extract geometry" feature.
1. What is the difference between "extract" and "multiple extract"? I have read the documentation but I just can't seem to get my head around it. Would someone care to enlighten me?
2. In UG there exists "extract geometry" with an "extract region" sub option that allows you to to essentially extract a region of surfaces by picking one internal surface and then picking a series of boundary surfaces. The system then automatically selects all the surfaces in between the first surface you pick and the boundary surfaces. Is there a way to achieve similar results in Catia? I have played around with the different propagation types but in the end I either get too many surfaces(point continuity) or I spend a lot of time picking individual surfaces( no propogation). Is what I am trying to achieve even possible in Catia, and if so, how should I go about it?
Thanks in advance, thixoguy





RE: extract geometry
1. There is no difference between "extract" and "multiple extract", "multiple extract" is for make more than one extract at the same time.
2. In Catia it doesn’t exist, my recommendation is to take the limit boundary with the join command and trim the surface with it.
RE: extract geometry
Have you checked out the complimentary toggle.
We use extract to seperate core/cavity data. For the most part we can achieve the desired results with the use of tangency and complimentary during extraction. We have 3 systems with CCV - most parts we receive can be split with these methods.
Regards,
Derek
RE: extract geometry
Regards,
Derek
RE: extract geometry
Though I prefer the UG extract region, your workaround is an excellent method. Thank you
kaesar,
Is your workaround the same as DBezaire's? If it is, a big thank you to you as well, if not, could you please elaborate?
thixoguy
RE: extract geometry
my recommendation is to take de limit boundary of surfaces you want to extract and trim the total surface with this boundary. You can get this limit boundary with the join command. The join command lets you to take and join internal boundaries of surfaces.
I think this method is the same as the UG extract region but in steps, 2 steps.
Luck
RE: extract geometry
Regards,
Derek
RE: extract geometry
Is there any way to multiselect faces with point or tangency continuity? For example if I want to bring surfaces from an Iges and I need select the upper skin of a sheet metal part.
Thanks
RE: extract geometry
if you take surfaces from an iges model yoo have to join all of them first. After that the way for selecting faces with point or tangency continuity is with the extract command, but if you choose the point continuity option you will extract all surfaces (the same as the first join).
RE: extract geometry
Regards,
Derek