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@PaulyPHI Give this a try.SetPlineZ_Updated.lsp

The equal linetype as supplied is just a dashed linetype that has a length of one unit and a gap of one unit. By setting its LTSCALE to the length of a pipe you can get an idea of the number of pipes involved. I have somewhere also convert an existing line to two lines as per right hand image, The GIS used to dump out a single line on a size layer so we wanted 2 dashed lines to imply existing drainage. Will try to find I think that is what you want.

Hey, that's useful. I'm keeping this one

Taking your example video this is convert a p/line to a drainage pipe written for civil road works, with most common AUS sizes. Needs linetype Equal the length of dashed is set to 2.4 which is a length of a concrete pipe. Handy for civil works. It is not dynamic. *EQUAL,_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ A,1.0,-1.0 Pipe offsets.lsp If you post here a VLR function can test. Fillet offset circle.lsp Have a look at "Fillet offset circle" uses reactors.

You have multiple locations using a redundant entget. (vlax-ename->vla-object (cdr (car (entget e1))) == (vlax-ename->vla-object e1)

This may help you set up for checking your LISPs Graebert LISP Extension[FLISP] - ARES Commander Partner Documentation - Confluence

Thanks both for the honest feedback — exactly what I was hoping for. @pkenewell — appreciate the link, I'm aware of Lee Mac's MPLine and have a lot of respect for his work. His implementation is elegant and handles the core offset drawing well. MultiPLine goes in a different direction: DCL-based configuration dialog, per-line layer assignment, named presets that persist across drawings, and the Pro version adds a command reactor for auto-sync. Different scope rather than a direct replacement for what he built. Worth knowing about either way so thanks for flagging it. @BIGAL — fair points across the board. BricsCAD: honestly didn't design for it and can't make promises there. The reactor implementation in Pro leans on AutoCAD-specific VLR functions. Lite might load fine in BricsCAD but I haven't tested it — if any BricsCAD users try it I'd be curious to hear the result. On the "why pay" question: fair challenge. The free Lite version covers the core workflow for most users. The Pro is aimed at teams and daily-driver users who want auto-sync and a preset library they can share across a team. Whether that's worth $29 is genuinely up to the buyer — I'm not trying to oversell it. The package suggestion is actually something I've been thinking about. MultiPLine is my first commercial release but I have other tools in progress. A bundle makes more sense as a value proposition and I'll keep that in mind for when there's more to package together. One more thing — I've added the full .lsp source to the Lite download on Gumroad. Free to inspect, modify for personal use, and learn from. Thanks again for taking the time — this kind of feedback from experienced users is more useful than any marketing. Zlatislav

Incredible: it seems that (GC) works! I think I last used this command on a 486! Thank you very much!

Haven't been on AutoCAD for a while. maybe try GC command to free up memory might help. use mem at the start when its nice and fast and when it is starting to slow down. https://help.autodesk.com/view/ACDLT/2026/ENU/?caas=caas/documentation/ACD/2014/ENU/files/GUID-F4AEB953-2117-4BF2-8056-EA1384AC3FFF-htm.html

I used SSX to select all objects on the layer "SURVEY NO BOUNDARY". As long as "Optimize segments within polylines" is checked Overkill will fix the existing polylines. As Eldon said "If you run Overkill first, then Extrim will work. But it will only trim the lines crossing the rectangle." It's a routine for trimming not erasing. I use EraseOutsideBoundary to both trim & erase outside: ;| Function to trim objects inside selected boundaries (allows for multiple boundaries) Boundaries can be "Circle, Ellipse, LWPolyline and Polyline" Entities Written By: Peter Jamtgaard Copyright 2015 All Rights Reserved ^C^C^P(or C:BoundaryTrim (load "BoundaryTrim.lsp"));BoundaryTrim EraseOutsideBoundary added by Tom Beauford ^C^C^P(or C:EraseOutsideBoundary (load "BoundaryTrim.lsp"));EraseOutsideBoundary ==============================================================================|; ;(defun C:BT ()(c:BoundaryTrim)) (defun C:BoundaryTrim (/ acDoc intCount ssBoundaries) (if (setq ssBoundaries (ssget (list (cons 0 "Circle,Ellipse,LWPolyline,Polyline")))) (progn (vla-startundomark (setq acDoc (vla-get-activedocument (vlax-get-acad-object)))) (repeat (setq intCount (sslength ssBoundaries)) (setq intCount (1- intCount)) (BoundaryTrim (ssname ssBoundaries intCount)) (BoundaryWindowErase (ssname ssBoundaries intCount)); <-Erase objects inside boundary optional ) ) ) (if acDoc (vla-endundomark acDoc)) ) ; Command line function to select objects that are windowed by a selected circle. (defun C:BoundarySelect (/ lstPoints objBoundary ssBoundary) (if (and (setq ssBoundary (ssget ":E:S" (list (cons 0 "Circle,Ellipse,LWPolyline,Polyline")))) (setq objBoundary (vlax-ename->vla-object (ssname ssBoundary 0))) (setq lstPoints (SegmentPoints objBoundary 360)) ) (and (setq ssSelections (ssget "_WP" lstPoints)) ) ) ) ; Function to trim linework inside a boundary entity (defun BoundaryTrim (entBoundary1 / lstPoints entBoundary1 entBoundary2 lstCenter lstPoints1 lstPoints2 objBoundary1 objBoundary2 ssBoundary *Error*) (defun *Error* () (setvar "cmdecho" intCMDEcho) ) (setq intCMDEcho (getvar "cmdecho")) (setvar "cmdecho" 0) (if (and (setq objBoundary1 (vlax-ename->vla-object entBoundary1)) (setq lstPoints1 (SegmentPoints objBoundary1 360)) (setq lstCenter (mapcar '(lambda (X)(/ (apply '+ X) (length lstPoints1)))(transposematrix lstPoints1))) (vl-cmdf "offset" (/ (distance (car lstPoints1) lstCenter) 36.0) entBoundary1 lstCenter "") (setq entBoundary2 (entlast)) (setq objBoundary2 (vlax-ename->vla-object entBoundary2)) (setq lstPoints2 (SegmentPoints objBoundary2 360)) ) (progn (vl-cmdf "trim" entBoundary1 "" "f") (foreach lstPoint lstPoints2 (vl-cmdf lstPoint)) (vl-cmdf "" "") (entdel entBoundary2) (vl-cmdf "redraw") (setvar "cmdecho" intCMDEcho) ) ) ) ; Function to trim linework outside a boundary entity (defun TrimOutsideBoundary (entBoundary1 / lstPoints entBoundary1 entBoundary2 lstCenter maxpt lstPoints1 lstPoints2 objBoundary1 objBoundary2 ssBoundary *Error*) (defun *Error* () (setvar "cmdecho" intCMDEcho) ) (setq intCMDEcho (getvar "cmdecho")) (setvar "cmdecho" 0) (if (and (setq objBoundary1 (vlax-ename->vla-object entBoundary1)) (setq lstPoints1 (SegmentPoints objBoundary1 360)) (setq lstCenter (mapcar '(lambda (X)(/ (apply '+ X) (length lstPoints1)))(transposematrix lstPoints1))) (setq maxpt (list (1+ (car (getvar 'extmax)))(1+ (cadr (getvar 'extmax)))(1+ (caddr (getvar 'extmax))))) (vl-cmdf "offset" (/ (distance (car lstPoints1) lstCenter) 200.0) entBoundary1 maxpt "") (setq entBoundary2 (entlast)) (setq objBoundary2 (vlax-ename->vla-object entBoundary2)) (setq lstPoints2 (SegmentPoints objBoundary2 360)) ) (progn (vl-cmdf "trim" entBoundary1 "" "f") (foreach lstPoint lstPoints2 (vl-cmdf lstPoint)) (vl-cmdf "" "") (entdel entBoundary2) (vl-cmdf "redraw") (setvar "cmdecho" intCMDEcho) ) ) ) ; Function to erase linework inside a boundary entity (defun BoundaryWindowErase (entBoundary / lstPoints objBoundary ssSelections) (if (and (setq objBoundary (vlax-ename->vla-object entBoundary)) (setq lstPoints (SegmentPoints objBoundary 360)) (setq ssSelections (ssget "_WP" lstPoints)) ) (and (setq ssSelections (ssget "_WP" lstPoints)) (vl-cmdf "erase" ssSelections "") ) ) ) ; Function to determine the points along a curve dividing it intSegments number of times (defun SegmentPoints (objCurve intSegments / sngSegment intCount lstPoint lstPoints sngLength sngSegment) (if (and (setq sngLength (vlax-curve-getdistatparam objCurve (vlax-curve-getendparam objCurve))) (setq sngSegment (/ sngLength intSegments)) (setq intCount 0) ) (progn (repeat (1+ intSegments) (setq lstPoint (vlax-curve-getpointatdist objCurve (* intCount sngSegment))) (setq lstPoints (cons lstPoint lstPoints)) (setq intCount (1+ intCount)) ) lstPoints ) ) ) ; Function to Transpose a matrix (defun TransposeMatrix (lstMatrix) (if (car lstMatrix) (cons (mapcar 'car lstMatrix) (TransposeMatrix (mapcar 'cdr lstMatrix)) ) ) ) ; Function to erase linework outside a boundary entity (defun C:EraseOutsideBoundary ( / ss1 n ssBoundary objBoundary lstPoints ssSelections entSelection) (vla-startundomark (setq acDoc (vla-get-activedocument (vlax-get-acad-object)))) (setq ss1 (ssget "_X" '((67 . 0))) n -1) (if (and (setq ssBoundary (ssget ":E:S" (list (cons 0 "Circle,Ellipse,LWPolyline,Polyline")))) (setq entBoundary (ssname ssBoundary 0)) (ssdel entBoundary ss1) (TrimOutsideBoundary entBoundary) (setq objBoundary (vlax-ename->vla-object entBoundary)) (setq lstPoints (SegmentPoints objBoundary 360)) ) (and (setq ssSelections (ssget "_CP" lstPoints)) (repeat (sslength ssSelections) (setq entSelection (ssname ssSelections (setq n (1+ n)))) (if(ssmemb entSelection ssSelections)(ssdel entSelection ss1)) ) (command "erase" ss1 "") ) ) (if acDoc (vla-endundomark acDoc)) )