In my last project I had to create multiple clipping boundaries using smooth bulged lightweight polylines and splines
to geopositioned orthophotos. Here is a code that I've written to automate this process. There are other solutions available around the internet, but I didn't find code that works same as my.
You can use this code to create multiple clipping boundaries on IMAGE, PDF, DWF, and DGN UNDARLAY, external references (xrefs) and viewports.
Supported clipping entities are lwpolyline, spline, splined polyline, circle and ellipse.
During selection set generation user is offered to separately select inward and outward directed clipping boundaries.
Miljenko Hatlak
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