Shape detection

[zmedwael]

Hi ,
i'm trying to create a journal that can detect all bodies in an assembly that have a similar geometry as a reference body ,
but it seems that i'm not progressing , any ideas ?
thanks.

 

[cowski]

I'd probably start by comparing the number and type of faces in each body and/or overall bounding box size (if size is an important criteria).

How similar do they need to be to be considered a 'match'? Do you have any examples?

www.nxjournaling.com

 

[zmedwael]

Hi,
yes i was thinking the same , and i found a function that can calculate the faces area , so i can compare them to be more accurate , the functions name is UF_SF_face_ask_area , but i have difficulties to crate it .
as an answer to your question, the parts does not to be exactly similar but i think ,if i can calculate the areas of faces i will be able to filter them , because the dimensions of these parts are much smaller then the other parts.
as an exemple, these parts are flanges providing connections between the tubes.

 

[JohnRBaker]

This may be a bit overkill, but have you ever looked into our 3D Geometry Search engine, Geolus? This capability is fully integrated into NX under the...

Tools -> Shape Search...

...function.

For more information about this product, go to:

http://www.plm.automation.siemens.com/en_us/products/open/geolus/index.shtml

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[cowski]

The function UF_SF_face_ask_area, measures the area of a polygon face (probably not what you are looking for unless you are comparing meshed FEA parts).

Perhaps a MeasureFaceBuilder object would get what you want.

www.nxjournaling.com

 

[zmedwael]

Thanks Cowski , i will work on it and i will tell you if i have any results .

and thanks Baker for the information , but i want to learn more about nxopen and i'm trying to create my own journals.