How to extract region properties of sketch entities

[Anonymous]

Hi,

I need to use the region properties API call to find the area moment of inertia for specific, closed sketch entities. The example here

http://forums.autodesk.com/t5/inventor-customization/how-to-second-moment-area-iproperties/td-p/3367...

will allow you to get the whole sketch region properties. You can even visualize the individual loops with the code from this blog:

http://adndevblog.typepad.com/manufacturing/2015/01/get-outer-profile-loop-in-sketch.html

I can't seem to get the properties of the individual loops. The region properties structure always returns  the properties for the whole sketch. Is there something special I need to do to get the sub-sketch region properties?

Thanks,

Chris

[ekinsb · Accepted solution]

The ability to calculate area properties is only supported on the Profile object.  However, you shoud be able to create a profile object that defines the area you want properties for.  I suggest looking at the Sketch topic in the API help.  In the table of contents it's found in:

Inventor API User's Manual

   Part and Assembly Modeling

      Working with Sketches

The portion that discusses profiles is near the end.