Area and Centroid of Hatch or Boundary with islands

Hello Group,

I was wondering if anyone have worked on a program that will do the following: You have a rectangle with a smaller square inside it (could be located anywhere). I would like to know if there is a lisp already available that would give me the area and the centroid of the rectangle minus the smaller square. I hope this makes sence. TIA.

Cheers
Mike Hetherton
Australia

 

Mike,

One way would be to convert the 2 shapes into a
region, subtract the inner from the outter and then
obtain the centroid via (vla-get-centroid....) or
(vlax-get <object> 'centroid)

--

Autodesk Discussion Group Facilitator

a rectangle with a smaller square inside it (could be located anywhere). I would like to
know if there is a lisp already available that would give me the area and the centroid of
the rectangle minus the smaller square. I hope this makes sence. TIA.

 

PS: the same would be applicable to the area.

--

Autodesk Discussion Group Facilitator

<snip>

 

mikehetherton

Visit my homepage -> Free Stuff and search for 'VxGetMassProps'...

Cheers