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I added extra checks on every vertex like @PGia suggested two weeks ago. Those I added to the offset-loop and it gives the best of both worlds. Every point that is calculated should be the exact middle because the offset is the same on both sides. Still not perfect, but pretty close I think. ;| ; Calculate centerline between two polylines - dexus ; Function checks intersections of the offsets of two lines to create a middle/avarage line. |; (defun c:cl (/ ent1 ent2 loop maxlen offset offsetdistance pts s1 s2 ss start LM:ProjectPointToLine LM:intersections _addPoints _avarageAngle _cornerOffset _doOffset _getAnglesAtParam _getLength _polyline _side _wait) (defun _polyline (pts) (entmakex (append (list (cons 0 "LWPOLYLINE") (cons 100 "AcDbEntity") (cons 100 "AcDbPolyline") (cons 90 (length pts)) (cons 8 (getvar 'clayer)) (cons 70 0) ) (mapcar (function (lambda (x) (cons 10 x))) pts) ) ) ) (defun _side (pline pnt / cpt end target der) (setq cpt (vlax-curve-getClosestPointTo pline pnt) ; https://www.theswamp.org/index.php?topic=55685.msg610429#msg610429 end (vlax-curve-getEndParam pline) target (vlax-curve-getParamAtPoint pline cpt) der (if (and (equal target (fix target) 1e-8) (or (vlax-curve-isClosed pline) (and (not (equal (vlax-curve-getStartParam pline) target 1e-8)) (not (equal end target 1e-8))) ) ) (mapcar '- (polar cpt (angle '(0 0) (vlax-curve-getFirstDeriv pline (rem (+ target 1e-3) end))) 1.0) (polar cpt (angle (vlax-curve-getFirstDeriv pline (rem (+ (- target 1e-3) end) end)) '(0 0)) 1.0) ) (vlax-curve-getFirstDeriv pline target) ) ) (minusp (sin (- (angle cpt pnt) (angle '(0.0 0.0) der)))) ) ;; Intersections - Lee Mac ;; mod - [int] acextendoption enum of intersectwith method (defun LM:intersections ( ob1 ob2 mod / lst rtn ) (if (and (vlax-method-applicable-p ob1 'intersectwith) (vlax-method-applicable-p ob2 'intersectwith) (setq lst (vlax-invoke ob1 'intersectwith ob2 mod)) ) (repeat (/ (length lst) 3) (setq rtn (cons (list (car lst) (cadr lst) (caddr lst)) rtn) lst (cdddr lst)) ) ) (reverse rtn) ) (defun _getLength (ent) (- (vlax-curve-getDistAtParam ent (vlax-curve-getEndParam ent)) (vlax-curve-getDistAtParam ent (vlax-curve-getStartParam ent)) ) ) (defun _wait (msec) (not ( (lambda (start) (while (< (- (getvar 'millisecs) start) msec)) ) (getvar 'millisecs) ) ) ) (defun _addPoints (lst ent pts / len) (setq len (_getLength ent)) (setq lst (mapcar (function (lambda (pt) (list (/ (vlax-curve-getDistAtPoint ent pt) len) pt))) lst)) (setq pts (append lst pts)) ; Animation ; (setq pts (vl-sort pts (function (lambda (a b) (< (car a) (car b)))))) ; (redraw) ; ( ; (lambda (lst) ; (while (cadr lst) ; (grdraw (cadar lst) (cadadr lst) 3) ; (setq lst (cdr lst)) ; ) ; ) ; pts ; ) ; (vla-update ent) ; (_wait 40) ; End animation pts ) (defun _doOffset (offset / te1 te2 lst rtn) ; Global vars: pts ent1 ent2 s1 s2 (setq rtn (cond ((equal offset 0.0 1e-4) (if (setq lst (LM:intersections ent1 ent2 acExtendNone)) (setq pts (_addPoints lst ent1 pts)) ) lst ) ( (or ; Make offset (vl-catch-all-error-p (setq te1 (vl-catch-all-apply 'vlax-invoke (list ent1 'Offset (if s1 offset (- offset)))))) (vl-catch-all-error-p (setq te2 (vl-catch-all-apply 'vlax-invoke (list ent2 'Offset (if s2 offset (- offset)))))) (vla-put-color (car te1) 252) (vla-put-color (car te2) 252) ) (princ "\nOffset failed. ") nil ) ((setq lst (LM:intersections (car te1) (car te2) acExtendNone)) (setq pts (_addPoints lst (car te1) pts)) lst ) ) ) (if (and te1 (not (vl-catch-all-error-p te1))) (mapcar 'vla-delete te1)) (if (and te2 (not (vl-catch-all-error-p te2))) (mapcar 'vla-delete te2)) rtn ) ;| ; Project Point onto Line - Lee Mac ; @Param pt point to project ; @Param p1 first point of line ; @Param p2 second point of line ; @Returns projected point |; (defun LM:ProjectPointToLine ( pt p1 p2 / nm ) (setq nm (mapcar '- p2 p1) p1 (trans p1 0 nm) pt (trans pt 0 nm)) (trans (list (car p1) (cadr p1) (caddr pt)) nm 0) ) (defun _getAnglesAtParam (ent pa / ang1 ang2) (if (and (vlax-curve-isClosed ent) (= pa 0)) ; Special case for closed Polyline (list (setq ang1 (vlax-curve-getFirstDeriv ent 1e-14)) (setq ang2 (vlax-curve-getFirstDeriv ent (- (fix (vlax-curve-getEndParam ent)) 1e-14))) ) (list (setq ang1 (vlax-curve-getFirstDeriv ent (+ pa 1e-14))) (setq ang2 (vlax-curve-getFirstDeriv ent (- pa 1e-14))) ) ) (setq ang1 (angle '(0 0 0) ang1)) (setq ang2 (angle '(0 0 0) ang2)) (list ang1 (* (+ ang1 ang2) 0.5) ang2) ) ;| ; Avarage Angle - dexus ; Get angle of a line between two angles ; @Param ang1 real - Angle in radians ; @Param ang2 real - Angle in radians ; @Returns real - Angle in radians |; (defun _avarageAngle (ang1 ang2) (if (< (rem (+ ang1 pi) (+ pi pi)) (rem (+ ang2 pi) (+ pi pi)) ) (+ (* (- ang2 ang1) 0.5) ang1) (+ (* (- ang1 ang2) 0.5) ang2) ) ) ;| ; Calculate exact offset distance on a corner - dexus ; pt1 - Point on corner ; pt2 - Point on other side ; pt3 - Center for bisector ; pt4 - Target for corner of the offset ; pt5 - Find perpendicular point for offset distance ; / ; / ; -------- pt1 pt5 ; \ / ; pt4 ; \ ; ---- pt3 ----- pt2 ----- ; ; @Param ent1 Line to check corners ; @Param ent2 Opposing line ; @Returns List of offset distances (pt1 -> pt5) to calculate |; (defun _cornerOffset (ent1 ent2 / ang1 ang2 ang3 index pt1 pt2 pt3 pt4 pt5 rtn tmp vertex) (setq vertex (fix (vlax-curve-getEndParam ent1)) halfPi (* pi 0.5) index 0) (repeat vertex (and (setq pt1 (vlax-curve-getPointAtParam ent1 index)) ; Point on corner (setq ang1 (_getAnglesAtParam ent1 index)) ; Angles of pt1 (setq tmp ; Temp line for finding the angle on the other side (entmakex (list '(0 . "line") (cons 10 (polar pt1 (+ (cadr ang1) halfPi) maxlen)) (cons 11 (polar pt1 (- (cadr ang1) halfPi) maxlen)) ) ) ) (setq pt2 (car (LM:intersections (vlax-ename->vla-object tmp) ent2 acExtendNone))) ; Point on other side (setq ang2 (_getAnglesAtParam ent2 (vlax-curve-getParamAtPoint ent2 pt2))) ; Angle of pt2 (if (equal (rem (car ang1) pi) (rem (car ang2) pi) 1e-9) ; Is parallel? (setq pt3 (mapcar (function (lambda (a b) (* (+ a b) 0.5))) pt1 pt2) ; Midpoint ang3 (car ang1)) ; Same angle als ang1 (setq pt3 (inters pt1 (polar pt1 (car ang1) 1) pt2 (polar pt2 (car ang2) 1) nil) ; Find center for bisector ang3 (_avarageAngle (angle pt1 pt3) (angle pt2 pt3))) ; Angle of bisector ) (setq pt4 (inters pt3 (polar pt3 ang3 1) pt1 (polar pt1 (+ (cadr ang1) halfPi) 1) nil)) ; Find target for corner of the offset (setq pt5 (LM:ProjectPointToLine pt4 pt1 (polar pt1 (+ (car ang1) halfPi) maxlen))) ; Find perpendicular point for offset distance (setq rtn (cons (distance pt1 pt5) rtn)) ; Return offset distance ) (if (entget tmp) (entdel tmp)) (setq index (1+ index)) ) rtn ) (if (not (while (cond ((not (setq ss (ssget '((0 . "LWPOLYLINE"))))) (princ "\nNothing selected. Try again...\n") ) ((/= (sslength ss) 2) (princ "\nSelect 2 polylines! Try again...\n") ) ((and (setq ent1 (ssname ss 0)) (setq ent2 (ssname ss 1)) (setq ent1 (vlax-ename->vla-object ent1)) (setq ent2 (vlax-ename->vla-object ent2)) ) nil ; Stop loop ) ) ) ) (progn (setq s1 (_side ent1 (vlax-curve-getStartPoint ent2))) (setq s2 (_side ent2 (vlax-curve-getStartPoint ent1))) (setq maxlen (* 1.1 (max (_getLength ent1) (_getLength ent2) (distance (vlax-curve-getStartPoint ent1) (vlax-curve-getStartPoint ent2))))) (setq offsetdistance (/ maxlen 1024.0)) (if (LM:intersections ent1 ent2 acExtendNone) (setq offset (- maxlen)) (setq offset 0.0) ) (mapcar '_doOffset (_cornerOffset ent1 ent2)) (mapcar '_doOffset (_cornerOffset ent2 ent1)) (while (progn (setq loop (cond ((> offset maxlen) nil) ((_doOffset offset) (setq start t)) ((not start) t) (start nil) ) ) (setq offset (+ offset offsetdistance)) loop ) ) (if pts (_polyline (mapcar 'cadr (vl-sort pts (function (lambda (a b) (< (car a) (car b))))))) ) ) ) (redraw) (princ) )

@BIGAL Could You have a time and maybe help me? I will be very grateful

This is a very simple test to make everything is inside the code including the images. next step would be to look at the Lee-mac example and use vectors rather than slides. Thanks to RLX for convert DCL. ; https://www.cadtutor.net/forum/topic/98827-the-coordinates-of-the-trapezoid/page/2/#comment-677242 ; Fill in 4 image dcl with vector images ; simple working example by AlanH Nov 2025 (setq imgslst (list (list (list 19 222 128 222 7) (list 128 222 128 114 7) (list 128 114 19 114 7) (list 19 114 19 222 7)) (list (list 37 202 119 202 7) (list 119 202 139 120 7) (list 139 120 17 120 7) (list 17 120 37 202 7)) (list (list 36 203 120 203 7) (list 120 203 101 161 7) (list 141 119 16 119 7) (list 16 119 36 203 7)(list 101 161 141 119 7)) (list (list 38 200 118 200 7) (list 118 200 99 160 7) (list 138 120 18 120 7) (list 55 168 38 200 7)(list 99 160 138 120 7)(list 55 168 18 120 7)) ) ) (defun VECTOR4 (dclkey imglst / i j) (setq i (/ (dimx_tile DCLKEY) 151.) j (/ (dimy_tile DCLKEY) 326.)) (start_image DCLKEY) (fill_image 0 0 (dimx_tile DCLKEY)(dimy_tile DCLKEY) -2) (foreach x imglst (vector_image (fix (* (car x) i))(fix (* (cadr x) j))(fix (* (caddr x) i))(fix (* (cadddr x) j))(last x)) ) (end_image) (princ) ) (defun makedcl ( / ) (setq dcl (vl-filename-mktemp nil nil ".dcl") ) (setq des (open dcl "w") ) (foreach x '( "// dd2x2 dialogue. Used by the d2x2 command in dd2x2.lsp." "// Called from the AutoCAD Release 12 Standard Menu." "dd2x2: dialog {" " label = \"Pick shape\";" " : column {" " : row {" " : image_button {" " key = \"22sq1\";" " width = 15;" " aspect_ratio = 1.0;" " color = 0;" " allow_accept = true;" " }" " : image_button {" " key = \"22sq2\";" " width = 15;" " aspect_ratio = 1.0;" " color = 0;" " allow_accept = true;" " }" " }" " : row {" " : image_button {" " key = \"22sq3\";" " width = 15;" " aspect_ratio = 1.0;" " color = 0;" " allow_accept = true;" " }" " : image_button {" " key = \"22sq4\";" " width = 15;" " aspect_ratio = 1.0;" " color = 0;" " allow_accept = true;" " }" " }" " }" "ok_cancel;" "}" ) (write-line x des ) ); foreach (close des) (princ) ) (defun wow ( / x ans dcl keynum imgsitem dclkey ) (makedcl) (setq dcl_id (load_dialog dcl)) (if (not (new_dialog "dd2x2" dcl_id) ) (exit) ) (setq keynum 1) (repeat 4 (setq imgsitem (nth (- keynum 1) imgslst)) (setq dclkey (strcat "22sq" (rtos keynum 2 0))) (VECTOR4 dclkey imgsitem) (setq keynum (1+ keynum)) ) (action_tile "22sq1" "(setq ans $key)(done_dialog)") (action_tile "22sq2" "(setq ans $key)(done_dialog)") (action_tile "22sq3" "(setq ans $key)(done_dialog)") (action_tile "22sq4" "(setq ans $key)(done_dialog)") (action_tile "accept" "(setq ans $key)(done_dialog)") (action_tile "cancel" "(setq ans $key)(done_dialog)") (start_dialog) (unload_dialog dcl_id) (vl-file-delete dcl) (princ (strcat "\nsq picked = " ans)) (princ) ) (wow)

I made some simple shapes and used Vectorize to do just that, here are some samples. next step is to look at Lee-Mac example. Only read the vectors pattern in the following code. ;******************************************************************************** ; Function to draw a vector image within a dialogue Image tile or Image Button. * ; Argument: 'DCLKEY' - the dcl key of the image tile/button to be filled. * ; Do NOT edit the dcl dimension text below, this is needed by Vectorize. * ;******************************************************************************** ; Compiled for dcl dimensions of width,24.92, height,24.97, * ;******************************************************************************** (defun VECTOR1 (DCLKEY / i j) (setq i (/ (dimx_tile DCLKEY) 151.) j (/ (dimy_tile DCLKEY) 326.)) (start_image DCLKEY) (fill_image 0 0 (dimx_tile DCLKEY)(dimy_tile DCLKEY) -15) (foreach x '((19 222 128 222 7) (128 222 128 114 7) (128 114 19 114 7) (19 114 19 222 7)) (vector_image (fix (* (car x) i))(fix (* (cadr x) j))(fix (* (caddr x) i))(fix (* (cadddr x) j))(last x))) (end_image) (princ) ) (defun VECTOR2 (DCLKEY / i j) (setq i (/ (dimx_tile DCLKEY) 151.) j (/ (dimy_tile DCLKEY) 326.)) (start_image DCLKEY) (fill_image 0 0 (dimx_tile DCLKEY)(dimy_tile DCLKEY) -15) (foreach x '((37 202 119 202 7) (119 202 139 120 7) (139 120 17 120 7) (17 120 37 202 7)) (vector_image (fix (* (car x) i))(fix (* (cadr x) j))(fix (* (caddr x) i))(fix (* (cadddr x) j))(last x))) (end_image) (princ) ) (defun VECTOR3 (DCLKEY / i j) (setq i (/ (dimx_tile DCLKEY) 151.) j (/ (dimy_tile DCLKEY) 326.)) (start_image DCLKEY) (fill_image 0 0 (dimx_tile DCLKEY)(dimy_tile DCLKEY) -15) (foreach x '((36 203 120 203 7) (120 203 101 161 7) (141 119 16 119 7) (16 119 36 203 7) (101 161 141 119 7)) (vector_image (fix (* (car x) i))(fix (* (cadr x) j))(fix (* (caddr x) i))(fix (* (cadddr x) j))(last x))) (end_image) (princ) ) (defun VECTOR4 (DCLKEY / i j) (setq i (/ (dimx_tile DCLKEY) 151.) j (/ (dimy_tile DCLKEY) 326.)) (start_image DCLKEY) (fill_image 0 0 (dimx_tile DCLKEY)(dimy_tile DCLKEY) -15) (foreach x '((38 200 118 200 7) (118 200 99 160 7) (138 120 18 120 7) (55 168 38 200 7) (99 160 138 120 7) (55 168 18 120 7)) (vector_image (fix (* (car x) i))(fix (* (cadr x) j))(fix (* (caddr x) i))(fix (* (cadddr x) j))(last x))) (end_image) (princ) ) (setq imgslst (list (list (list 19 222 128 222 7) (list 128 222 128 114 7) (list 128 114 19 114 7) (list 19 114 19 222 7)) (list (list 37 202 119 202 7) (list 119 202 139 120 7) (list 139 120 17 120 7) (list 17 120 37 202 7)) (list (list 36 203 120 203 7) (list 120 203 101 161 7) (list 141 119 16 119 7) (list 16 119 36 203 7)(list 101 161 141 119 7)) (list (list 38 200 118 200 7) (list 118 200 99 160 7) (list 138 120 18 120 7) (list 55 168 38 200 7)(list 99 160 138 120 7)(list 55 168 18 120 7)) ) ) Watch this psace. VECTORIZE.lsp

Yeah Lee's code is brilliant as usual. Nice way the image changes. Two things, Use Rlx convert DCL to lsp so dcl code is in lisp. Will have a think about vectors have some code some where.Convert dcl 2 lisp rlx.lsp

Try this. Note only do one direction at a time do lefts exit and repeat to do rights. ; https://www.cadtutor.net/forum/topic/98817-create-polyline-automatically/ ; Custom draw pline by Alan H Nov 2025 Checking if pline is CW or CCW and set to CCW ; Orignal idea by Kent Cooper, 1 August 2018 Offsetinorout.lsp ; By Alan H July 2020 ; (defun c:wow ( / co-ord ht pt0 pt1 pty1a pt2 pt2a ht oldsnap) (defun c:wow ( / ) (defun AH:chkcwccw (ent / objnew area1 area2 obj minpoint maxpoint) (setq obj (vlax-ename->vla-object ent)) (vla-GetBoundingBox obj 'minpoint 'maxpoint) (setq pointmin (vlax-safearray->list minpoint)) (setq pointmax (vlax-safearray->list maxpoint)) (setq dist (/ (distance pointmin pointmax) 20.0)) (vla-offset obj dist) (setq objnew (vlax-ename->vla-object (entlast))) (setq area1 (vlax-get objnew 'Area)) (vla-delete objnew) (vla-offset obj (- dist)) (setq objnew (vlax-ename->vla-object (entlast))) (setq area2 (vlax-get objnew 'Area)) (vla-delete objnew) (if (> area1 area2) (command "Pedit" ent "R" "") ) (princ) ) (setq oldsnap (getvar 'osmode)) (setvar 'osmode 0) (setq pt1 (getpoint "\nPick 1st point ")) (setvar 'osmode 128) (setq pt2 (getpoint pt1 "\nPick 2nd point on object ")) (setvar 'osmode 0) (setq pt0 (polar pt1 (/ pi 2.0) 4.0)) (command "pline" (setq pt1a (polar pt0 0.0 1.85)) (setq pt2a (polar pt1a (* 1.5 pi) 2.2)) (setq pt3 (polar pt2a pi 3.7)) (setq pt4 (polar pt3 (/ pi 2.0) 2.2)) "C" ) (setq ent (car (entsel "\Pick End Rectangle "))) (AH:chkcwccw ent) (setq co-ord (mapcar 'cdr (vl-remove-if-not '(lambda (x) (= (car x) 10)) (entget ent)))) (setq mp (mapcar '* (mapcar '+ (nth 1 co-ord) (nth 2 co-ord)) '(0.5 0.5))) (setq pt4 (polar mp (* 1.5 pi) (* 0.4 (distance (nth 0 co-ord) (nth 1 co-ord))))) (setq pt5 (mapcar '* (mapcar '+ (nth 0 co-ord) (nth 3 co-ord)) '(0.5 0.5))) (setq pt3 (list (car pt2) (cadr pt4))) (command "pline" pt0 pt1 pt2 pt3 pt4 pt5 "") (while (setq pt6 (getpoint "\nPick 1st point Enter to exit ")) (setq ang (angle pt2 pt6)) (if (and (>= ang (/ pi 2.0))(<= ang (* 1.5 pi))) (progn (setq pt0 (list (car pt6)(- (cadr pt0) 0.1))) (setq pt1 (list (car pt6)(- (cadr pt1) 0.1))) (setq pt2 (list (- (car pt2) 0.1)(- (cadr pt2) 0.1))) (setq pt3 (list (- (car pt3) 0.1)(- (cadr pt3) 0.1))) (setq pt4 (list (- (car pt4) 0.1)(- (cadr pt4) 0.1))) (setq pt5 (list (- (car pt5) 0.1)(cadr pt5))) ) (progn (setq pt0 (list (car pt6)(- (cadr pt0) 0.1))) (setq pt1 (list (car pt6)(- (cadr pt1) 0.1))) (setq pt2 (list (+ (car pt2) 0.1)(- (cadr pt2) 0.1))) (setq pt3 (list (+ (car pt3) 0.1)(- (cadr pt3) 0.1))) (setq pt4 (list (+ (car pt4) 0.1)(- (cadr pt4) 0.1))) (setq pt5 (list (+ (car pt5) 0.1)(cadr pt5))) ) ) (command "pline" (setq pt1a (polar pt0 0.0 1.85)) (setq pt2a (polar pt1a (* 1.5 pi) 2.2)) (setq pt3a (polar pt2a pi 3.7)) (polar pt3a (/ pi 2.0) 2.2) "C" ) (command "pline" pt0 pt1 pt2 pt3 pt4 pt5 "") ) (setvar 'osmode oldsnap) (princ) ) (C:wow)

Yea was thinking something like this. https://www.cadtutor.net/forum/topic/61373-need-help-with-proper-spacing-in-a-dialog-box/#findComment-506754

I only dabble in VBA but have these changed "kernel32" "user32" or maybe where you point to them, have had some VBA do this that refers to wrong library used.

My $0.05 you can draw any shape you want wether it be some form of trapezoid or a shape with 30 sides. It just comes down to writing code that matches the desired shape, Normal trapezoid length, height, angle Dbl angle length, height, angle1, angle2 Indented length, height, angle1, angle2, angle3 And so on., just ask which one you want first. You can even pop a image choice of what you want. Don't have trapezoids as images. Then for me pop a dcl for matching input. Ps @mhupp you don't have to put the AHlstbox in the code can use if (not ahlstbox)(Load "ahlstbox.lsp")) ; will load lisp code on the fly if not already loaded.

You can wrap the inputbox with ucase(trim( or even add things infront like i did with description eliminating lines of code. old ' --- Ask user if they want to Add or Remove description --- action = InputBox("Type 'A' to Add description or 'R' to Remove description:", "Action Choice", "A") action = UCase(Trim(action)) If action <> "A" And action <> "R" Then MsgBox "Invalid input.": Exit Sub ' --- Optional prefix --- prefix = "" Dim userInput As String userInput = InputBox("Enter component location prefix: T for Top, B for Bottom, leave blank for none:", "Prefix Option") userInput = UCase(Trim(userInput)) If userInput = "T" Then prefix = "Top_" If userInput = "B" Then prefix = "Bot_" ' --- Optional description (only if adding) --- If action = "A" Then description = InputBox("Enter description to append (leave blank for none):", "Optional Description") description = Trim(description) If description <> "" Then description = "_" & description If description <> "" Then CopyToClipboardAPI (description) MsgBox "Description '" & description & "' copied to clipboard." End If End If New ' --- Ask user if they want to Add or Remove description --- action = UCase(Trim(InputBox("Type 'A' to Add description or 'R' to Remove description:", "Action Choice", "A"))) If action <> "A" And action <> "R" Then MsgBox "Invalid input.": Exit Sub ' --- Optional prefix --- Dim userInput As String userInput = UCase(Trim(InputBox("Enter component location prefix: T for Top, B for Bottom, leave blank for none:", "Prefix Option"))) Select Case True Case userInput = "T" prefix = "Top_" Case userInput = "B" prefix = "Bot_" Case Else prefix = "" End Select ' --- Optional description (only if adding) --- If action = "A" Then description = "_" & Trim(InputBox("Enter description to append (leave blank for none):", "Optional Description")) If description <> "_" Then ;old code would still allow "_" to be copied to clipboard this skips and should prob exit sub if description is only "_" ? CopyToClipboardAPI (description) MsgBox "Description '" & description & "' copied to clipboard." Else MsgBox "Description is Blank " & vbCrLf & " Exiting Command" Exit Sub End If End If Didn't run past fso. please describe what your running into.

For fun, an another old code (in French) trapeze_dyn.lsp

These lisp's are to draw a trapezoid. I don't know if adding more features makes this completed code better. Id would have a separate code to make the irregular trapezoid and a main function to ask what shape you want to make. as far as dynamic mode modifying the poly in the drawing nothing more dynamic then that. this creates more options by call the irregular trapezoid lisp by itself or from a main list. you can even add other shapes to the main lisp. ;;----------------------------------------------------------------------------;; ;; All-Shapes or AS creates a DCL menu to pick what shape you want to create ;; and runs sub lisp of option picked ;; https://www.cadtutor.net/forum/topic/98827-the-coordinates-of-the-trapezoid/ (defun C:AS () (C:ALL-Shapes)) (defun C:All-Shapes (/ shplst shp) (setq shplst (list "Trapezoid" "Irregular Trapezoid" "Circle")) (setq shp (nth (ahlstbox "Pick a Shape" shplst 20 10) shplst)) (cond ((= shp "Trapezoid")(C:Trapezoid)) ((= shp "Irregular Trapezoid")(C:IrrTrapezoid)) ((= shp "Circle")(C:Cir)) ) ) ;; code by pkenewell (defun C:Trapezoid (/ bw p0 p1 p2 p3 p4 ra sa th) (if (and (setq bw (getreal "\nEnter the width of the Base: ") th (getreal "\nEnter the Height: ") sa (getreal "\nEnter the side angles: ") p0 (getpoint "\nSelect the insertion point: ") ) ) (progn (setq ra (* pi (/ sa 180.0)) p1 (list (- (car p0) (/ bw 2)) (cadr p0) (caddr p0)) p2 (list (+ (car p1) bw) (cadr p0) (caddr p0)) p3 (list (+ (car p2) (* (/ th (cos ra)) (sin ra))) (+ (cadr p0) th) (caddr p0)) p4 (list (- (car p1) (* (/ th (cos ra)) (sin ra))) (+ (cadr p0) th) (caddr p0)) ) (entmakex (append (list '(0 . "LWPOLYLINE") '(100 . "AcDbEntity") '(100 . "AcDbPolyline") '(90 . 4) '(70 . 1)) (mapcar '(lambda (x) (cons 10 x)) (list p1 p2 p3 p4)) ) ) ) ) ) (defun C:IrrTrapezoid (/ bw p0 p1 p2 p3 p4 ra sa th) (alert "Code Needed for Irregular Trapezoid") (princ) ) (defun C:Cir () (while (setq p (getpoint "\nSelect Point Center of Circle: ")) (command "_.CIRCLE" p pause) ) ) ; listbox-ah a library lst box routine pick just one from ; By Alan H March 2019 ; (if (not AHlstbox)(load "Listbox-AH.lsp")) ;(setq ans (ahlstbox "Pick a number" (list "150" "200" "225" "250" "300" "375" "450" "600") 20 10)) ; ans is returned as item number selected of the list (defun AHlstbox (heading lst wid ht / fo fname lsec ) (setq fo (open (setq fname (vl-filename-mktemp "" "" ".dcl")) "w")) (write-line "AHlstbox : dialog {" fo) (write-line (strcat " label = " (chr 34) heading (chr 34) " ;" ) fo) (write-line " spacer ; " fo) (write-line " :list_box { " fo) (write-line (strcat " key=" (chr 34) "lst" (chr 34) " ; ") fo) (write-line (strcat " multiple_select=" (chr 34) "false" (chr 34) " ; ") fo) (write-line (strcat " width= " (rtos wid 2 0) " ; ") fo) (write-line (strcat " height=" (rtos ht 2 0 ) " ; ") fo) (write-line " } " fo) (write-line "spacer ;" fo) (write-line " ok_cancel ; " fo) (write-line " } " fo) (close fo) (setq dcl_id (load_dialog fname)) (if (not (new_dialog "AHlstbox" dcl_id)) (exit) ) (start_list "lst") (foreach itm lst (add_list itm)) (end_list) (action_tile "lst" "(setq lsec (atoi $value) )") (start_dialog) (unload_dialog dcl_id) (vl-file-delete fname) (princ lsec) )

I forgot all about this over the weekend, can you post a sample drawing? I'll try to find time this weekend to run through this in QGIS at home.

What is the error you get? SolidWorks changed a few VBA commands from 2024 to 2025, you'll probably get better results on a SolidWorks/Dassault Systems forum. A quick search on SolidWorks VBA changes between 2024 and 2025 might help.

I mean that one side of the trapezoid must usually be irregular.

Hi Thank you all for these codes. However, I think this tool would be much better if the trapezoid angle could be adjusted interactively. It's often necessary to make adjustments to adapt it to the elements of the drawing.

Post a drawing saved in acad 2012 or 2017, and then maybe we could help.

There is all sorts of problems with 3 arcs/circles touching. I don't think can do a reactor but as you have already drawn something you should be able with a lisp to do a re-calc the tangent points. A reactor would have to some how find all 3 objects I think a lisp would be easier. Can you clarify the 3 objects by posting a sample dwg with some examples.

@CivilTechSource I checked it out looks very useful, not sure the surface analysis will do what is required, ie use it to import Surface Styles. May need something similar export out the surface label styles details. Did you try it ?

The desire is to find a way to keep a 'live.circle' tangent connected to the three edges made/picked first. If any of the edges are changed, the circle will follow and adjust so it remains tan.connected. I could draw three lines and a circle but to activate a/this desired reactor is not my language (yet). 1. select or draw segments to attach cir.tan to 2. lsp: draw tangent circle using segments of 1. 3. lsp: activate reactor to maintain tangents btw.. here's a similar one which has reactor ability https://www.theswamp.org/index.php?topic=8861.msg113627#msg113627

A quick way to get true areas where you have Horizontal and vertical scales is to block all the cross sections and then reset the Hor & ver scale. Did you google this has been asked many times before. Of course the simplest is use a 3rd party Civil software add on they have volumes all built in. Will pay for its self very quickly.

Nice @alanjt. Have you thought about using a Mline you can set the offsets and layers. If it's wrong flip line. In a lisp can reverse lines, plines and mlines. The other thing of course is offset 3d line work, including +- to rl's.

The desire is to find a way to keep a 'live.circle' tangent connected to the three edges made/picked first. If any of the edges are changed, the circle will follow and adjust so it remains tan.connected. I could draw three lines and a circle but to activate a/this desired reactor is not my language (yet). 1. select or draw segments to attach cir.tan to 2. lsp: draw tangent circle using segments of 1. 3. lsp: activate reactor to maintain tangents

Here I've revised Helmut's code and made it faster. ;; ; ;; Pathfinding with the A* algorithm by ymg 22/07/2024 ; ;; ; ;; Revised a prog by HELMUT SCHRÖDER - heschr@gmx.de - 2014-09-14 ; ;; found at Cadtutor.net ; ;; ; ;; Kept the same format for edges list but added lines as valid choice ; ;; Format: (((x1 y1) (x2 y2)) (((x2 y2) (x3 y3))....(xn yn))) ; ;; ; ;; The user is asked to pick a start and an endpoint. ; ;; The program will find the shortest path in a network of connected ; ;; polylines and/or lines and draw a new polyline representing the result. ; ;; ; ;; Two lists of nodes openlst and closelst are created from the above ; ;; mentionned edges list. The format of a node list is: ; ;; (((Point) (Prev Point) Cumulated_Distance Estimated_Total_Distance)...) ; ;; ; ;; Main change from origina are: ; ;; - cons the list instead of append ; ;; - vl-sort the openlist instead of the quicksort ; ;; - Replaced and renamed some vars and subroutine. ; ;; - Added fuzz 1e-4 to all points comparison ; ;; - Change the get_path function ; ;; - Added line as possible edges ; ;; - Added an error handler ; ;; - Added a timer to the search portion of the program ; ;; ; ;; The above changes amounted to an acceleration of about 4x from the ; ;; original program. ; ;; : ;; If you compile this program to a .fas you'll get more than 10x faster. ; ;; ; (defun c:A* ( / ssl ssp i edges startp endp openlst closelst found acdoc Edgelay Pathlay Pathcol Pathlwt) (vl-load-com) ; Changes values of following 4 global variables to suit your need. ; (setq Edgelay "Edges" Pathlay "Path" Pathcol 1 ; 1=Red 2=Yellow etc. ; Pathlwt 70 ; lineweight for path 0.7mm ; ) (or acdoc (setq acdoc (vla-get-activedocument (vlax-get-acad-object)))) (set_errhandler '("CLAYER" "OSMODE" "CMDECHO")) (setvar 'CMDECHO 0) (setvar 'OSMODE 1) (if (setq ssp (ssget '"X" (list (cons 0 "LWPOLYLINE") (cons 8 Edgelay)))) (foreach en (mapcar (function cadr) (ssnamex ssp)) (setq edges (append edges (mk_edge (listpol2d en)))) ) ) (if (setq ssl (ssget '"X" (list (cons 0 "LINE") (cons 8 Edgelay)))) (foreach en (mapcar (function cadr) (ssnamex ssl)) (setq edges (cons (list (butlast (vlax-curve-getstartpoint en)) (butlast (vlax-curve-getendpoint en))) edges)) ) ) (setq startp (butlast (getpoint "\nPick Start Point: ")) ; Startpoint - reduced to 2D ; endp (butlast (getpoint "\nPick End Point: ")) ; Endpoint - reduced to 2D ; openlst (list (list startp '(0 0) 0.0 (distance startp endp))) ; Add starting node to openlst ; ) (vla-startundomark acdoc) (setq ti (getvar 'MILLISECS)) (while (and openlst (not found)) (setq node (car openlst)) (if (equal (car node) endp 1e-4) (setq found T closelst (cons node closelst)) (setq closelst (cons node closelst) openlst (upd_openlst edges node endp (cdr openlst) closelst) ) ) ) (if found (mk_lwp (get_path closelst)) (alert "No path was found") ) (princ (strcat "\nExecution time:" (itoa (- (getvar 'MILLISECS) ti)) " milliseconds.")) (*error* nil) ) ;; ; ;; upd_openlst ; ;; ; ;; Each node of the openlst is passed to this sub and we scan the edges list ; ;; to find the corresponding edges. Then both points of the edges are tested ; ;; for equality to the nodes. The fixed cost (distance) is updated and so is ; ;; the estimated total distance. Updates are first put in a temporary node. ; ;; ; ;; We then proceed to test if the temp variable is already in the closelst ; ;; and proceed to the next edge. ; ;; ; ;; If temp is true and temp is not in closelst we go to the recursive sub ; ;; in_openlst which adjust the values and return the updated openlst : ;; ; ;; Upon return we sort the openlst on smallest estimated distance ; ;; and return the openlst to the main routine ; ;; ; (defun upd_openlst (edges node endp openlst closelst / pt fcost p1 p2 d temp) (setq pt (car node) fcost (caddr node)) (while edges (setq p1 (caar edges) p2 (cadar edges) edges (cdr edges) d (distance p1 p2) temp nil) ;Testing both points of an edge and building a temporary node ; (cond ((equal pt p1 1e-4) (setq temp (list p2 p1 (+ fcost d) (+ fcost d (distance p2 endp))))) ((equal pt p2 1e-4) (setq temp (list p1 p2 (+ fcost d) (+ fcost d (distance p1 endp))))) ) (if (and temp (not (memberfuzz (car temp) closelst))) (setq openlst (in_openlst temp openlst)) ) ) ; Keep openlist sorted on smallest Estimated Total Cost ; (print (vl-sort openlst (function (lambda(a b)(< (cadddr a) (cadddr b))))) ) ) ;in_lst Replaced by memberfuzz ; ;(defun in_lst (pt lst) ; (cond ; ((not lst) nil) ; ((equal pt (caar lst) 1e-4) lst) ; (T (in_lst pt (cdr lst))) ; ) ;) ; returns a new openlst with a double exchanged if cost is lower ; ;; ; (defun in_openlst (node lst) (cond ((not lst) (list node)) ((equal (car node) (caar lst) 1e-4) (if (< (cadddr node) (cadddr (car lst))) (cons node (cdr lst)) lst ) ) (T (cons (car lst) (in_openlst node (cdr lst)))) ) ) (defun in_openlst2 (node lst / s c) (setq s (splitat (caar node) lst) c (cadddr node)) (cond ((not lst) (list node)) ((not (car s)) (cons node (cadr s))) ((not (cadr s)) (cons node (car s))) (T (if (< (cadddr node) (cadddr (cadr s))) (append (car s) (cons node (cdr s))) lst )) ;(T (c ns node lst)) ) ) ;; ; ;; listpol2D by ymg (Simplified a Routine by Gile Chanteau ; ;; ; ;; Parameter: en, Entity Name or Object Name of Any Type of Polyline ; ;; ; ;; Returns: List of Points in 2D WCS ; ;; ; ;; Notes: Requires butlast function for 2d points. ; ;; ; (defun listpol2d (en / i lst) (repeat (setq i (fix (1+ (vlax-curve-getEndParam en)))) (setq lst (cons (butlast (vlax-curve-getPointAtParam en (setq i (1- i)))) lst)) ) ) ;; ; ;; mk_edge ; ;; ; ;; From a list of consecutives points as supplied by listpol2D, ; ;; Returns a list of edges (((x1 y1)(x2 y2)) ((x2 y2)(x3 y3))...) ; ;; ; (defun mk_edge (lst) (mapcar (function (lambda (a b) (list a b ))) lst (cdr lst)) ) ;; ; ;; butlast ; ;; ; ;; Returns a list without the last item ; ;; Used here mainly to change points to 2D ; ;; ; (defun butlast (lst) (reverse (cdr (reverse lst)))) ;; ; ;; get_path ; ;; ; ;; Returns The list of points of shortest path found from closelst. ; ;; ; (defun get_path (lst / path) (setq path (list (caar lst)) prev (cadar lst) lst (cdr lst)) (while (setq lst (memberfuzz prev lst)) (setq prev (cadar lst) path (cons (caar lst) path) ) ) path ) ;; ; ;; memberfuzz by Gile Chanteau ; ;; ; ;; Modified to work with nodes list ; ;; ; (defun memberfuzz (p lst) (while (and lst (not (equal p (caar lst) 1e-4))) (setq lst (cdr lst)) ) lst ) (defun splitat (p lst / tr) (while (and lst (not (equal p (caar lst) 1e-4))) (setq tr (cons (car lst) tr) lst (cdr lst)) ) (list (reverse tr) lst) ) (defun truncfuzz (p lst) (if (and lst (not (equal p (caar lst) 1e-4))) (cons (car lst) (truncfuzz p (cdr lst))) ) ) (defun posfuzz (p lst) (- (length lst) (length (memberfuzz p lst))) ) (defun rotleft (lst) (append (cdr lst) (list (car lst)))) (defun rotright (lst) (cons (last lst) (butlast lst))) ;; ; ;; mk_lwp ; ;; ; ;; Draw an lwpolyline given a point list ; ;; ; ;; Will be drawn on layer with color and lineweight defined by Variables ; ;; at beginnung of program. ; ;; ; (defun mk_lwp (pl) (entmakex (append (list (cons 0 "LWPOLYLINE") (cons 100 "AcDbEntity") (cons 100 "AcDbPolyline") (cons 8 Pathlay) (cons 62 Pathcol) (cons 90 (length pl)) (cons 70 0) (cons 370 Pathlwt) ) (mapcar (function (lambda (a) (cons 10 a))) pl) ) ) ) ;; Error Handler by Elpanov Evgenyi ; (defun set_errhandler (l) (setq varl (mapcar (function (lambda (a) (list 'setvar a (getvar a)))) l)) ) (defun *error* (msg) (mapcar 'eval varl) (if (and msg (not (wcmatch (strcase msg) "*BREAK*,*CANCEL*,*EXIT*"))) (princ (strcat "\nError: " msg)) ) (vla-endundomark acdoc) (princ) ) (princ "A* to start") Astar rev3.lsp astar test.dwg

Nice. Thank you! I might be able to use this idea and tweak it with layer.