Category Archives: AutoLISP: Polylines

AutoLISP: External Contours of Objects

This routine is helpful if you have overlapping objects that form a closed area and you would like to combine them into one overall closed object. This is like the UNION command but for 2D closed areas. Here’s how: ECO … Continue reading

Posted in AutoLISP, AutoLISP: Creating, AutoLISP: Modify, AutoLISP: Polylines | 3 Comments

Trim and Delete outside of closed polyline

Here is a very helpful routine that I seemed to have forgotten about. It lets you select a closed polyline and it will trim and delete everything outside of it. Anything that crosses its edge will be trimmed on the … Continue reading

Posted in AutoLISP, AutoLISP: Modify, AutoLISP: Polylines, Modifying | 8 Comments

AutoLISP: Interior Intersections of closed Polylines

This is the last of the polyline routines that I have for now. This one lets you select to closed objects and will keep the area that the two objects share and trim away the rest. Even though this can … Continue reading

Posted in AutoLISP, AutoLISP: Modify, AutoLISP: Polylines | Leave a comment

Autolisp: Polyline Outline of Objects

Here is another polyline routine that only works with closed objects (closed polylines, circles, ellipses…). This time however, you can select all of your objects at once and the combined outline of all of the shapes will be turned into … Continue reading

Posted in AutoLISP, AutoLISP: Modify, AutoLISP: Polylines | 1 Comment

AUtoLISP: Subract Objects from a Closed Polyline

Link to http://www.autocadtips.wordpress.com Here is a nice routine that lets you subtract closed objects (polylines, ellipses, circles…) from a closed polyline. That might sound¬†restrictive¬†but at least it is an option… TIP: this routine is finicky – when you select the … Continue reading

Posted in Attributes, AutoLISP: Modify, AutoLISP: Polylines | 2 Comments

AutoLISP: Erase Inside Closed Polyline

Link to AutoCAD Tips Here is another erasing routine. This one will erase everything inside of a closed polyline that you select. The main difference between this one and the previously featured routine is that objects that cross the polyline … Continue reading

Posted in AutoLISP, AutoLISP: Modify, AutoLISP: Polylines | Leave a comment

AutoLISP: Make a Real Rectangle

A long time ago, AutoCAD used to make Rectangles and polygons as their own entities. When you made a rectangle and then did a LIST <enter> on it, it would show as a rectangle. Nowadays, these objects are those objects … Continue reading

Posted in AutoLISP, AutoLISP: Creating, AutoLISP: Modify, AutoLISP: Polylines, Modifying, Polylines | Leave a comment

AutoLISP: Continue Polyline

ONE YEAR AND 196 POSTS!!!! One year ago today, I started this blog in hopes to have reference for AutoCAD tips in case I forgot them. After one year, I have made 196 posts and every week more and more … Continue reading

Posted in AutoLISP, AutoLISP: Polylines, Modifying, Polylines | 10 Comments