This was due to an optimization for speed with AcDbPolylines in the osnap
code in AutoCAD. That problem was fixed in AutoCAD 2007 so that the
optimization only works on true AcDbPolylines not objects of derived
classes. Unfortunately, that doesn't help you with Acad 2002 and 2006.
Sorry. 😞
wrote in message news:5675889@discussion.autodesk.com...
Hello!
I made a class which is derived from AcDbPolyline.Everything is OK but
snap intersection point is always fail. So I place a breakpoint in the
intersectWith() function,and it doesn't work.
Rarely system can enter intersectWith() ,Trim Break command and object
trace mode use it.The breakpoint react at
this time.
Custom class derived from AcDbCurve does not have this problem,but It is
hard to change my class.
In Acad2002,Acad2006.
Best
wishes!
Thank
you.
