surface intersection

I've a surface defined as a set a contiguous 3DFACEs; I'd find the
intersection of this surface with a plane, as a POLYLINE or a set of line
segments.

How is this possible with AUTOCAD 2000 ?

Thanks in advance

Ferruccio Levi

 

This is not possible in plain AutoCAD 2000.
You may try to MIRROR3D your faces around the plane and then examine
the intersections.

Vladimir Michl, www.xanadu.cz, www.cadforum.cz

 

This feature is avaible with the Calulator functions , there are a
number of simple matrix calculations made easy that yield the point
where two lines meet, where a line and a circle meet ,where a face and
a line meet aso. you just have to look for it.

 

As logn as you loaded the Cal functions ;

ilp(p1,p2,p3,p4,p5)

Determines the intersection point between a line (p1,p2) and a plane
passing through three points (p3,p4,p5).