Help Modifying LISP (Break Routine)

August 25, 2008

This is a routine that i stripped of the unnecessary commands and then i tried to edit it but my edits didnt seem to work *im not the best at it lol*. This routine lets you break all the objects wherever they intersect the selected object and it works great but i would like it to break them but offset the break evenly from the intersection at a distance i can choose instead of just breaking at the point. I am using autocad architectural desktop 2006. Any help would be greatly appreciated If there is anything else you need to know let me know

  ;;;====[ BreakObjects.lsp ]====
 ;;; Author: Copyright© 2006,2007 Charles Alan Butler 
 ;;; Contact   ***Had to delete in order to get past spam blocker
 ;;; Version:  1.3 April 9,2007
 ;;; Globalization by XANADU - ***Had to delete in order to get past spam 
 ;;; Purpose: Break All selected objects
 ;;;    permitted objects are lines, lwplines, plines, splines,
 ;;;    ellipse, circles & arcs 
 ;;;
 ;;;  Function  c:BreakTouching - Break objects touching the single Break object
 ;;;
 ;;; Sub_Routines:      
 ;;;    break_with      
 ;;;    ssget->vla-list 
 ;;;    list->3pair     
 ;;;    onlockedlayer   
 ;;;    get_interpts Return a list of intersect points
 ;;;    break_obj  Break entity at break points in list
 ;;; Requirements: objects must have the same z-value
 ;;; Restrictions: Does not Break objects on locked layers 
 ;;; Returns:  none
 ;;;
 ;;;   THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED     ;
 ;;;   WARRANTY.  ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR  ;
 ;;;   PURPOSE AND OF MERCHANTABILITY ARE HEREBY DISCLAIMED.            ;
 ;;;
 ;;;  You are hereby granted permission to use, copy and modify this
 ;;;  software without charge, provided you do so exclusively for
 ;;;  your own use or for use by others in your organization in the
 ;;;  performance of their normal duties, and provided further that
 ;;;  the above copyright notice appears in all copies and both that
 ;;;  copyright notice and the limited warranty and restricted rights
 ;;;  notice below appear in all supporting documentation.
 ;;;
 ;;+++++++++++++++++++++++
 ;; M A I N   S U B R O U T I N E                   
 ;;+++++++++++++++++++++++
  
 (defun break_with (ss2brk ss2brkwith self / cmd intpts lst masterlist ss ssobjs
                    onlockedlayer ssget->vla-list list->3pair
                    get_interpts break_obj
                   )
   ;; ss2brk     selection set to break
   ;; ss2brkwith selection set to use as break points
   ;; self       when true will allow an object to break itself
   ;;            note that plined will break at each vertex
   (vl-load-com)
  
  
 ;;++++++++++++++++++++
 ;; S U B   F U N C T I O N S                      
 ;;++++++++++++++++++++
  
   (defun onlockedlayer (ename / entlst)
     (setq entlst (tblsearch "LAYER" (cdr (assoc 8 (entget ename)))))
     (= 4 (logand 4 (cdr (assoc 70 entlst))))
   )
   
   (defun ssget->vla-list (ss / i ename lst)
     (setq i -1)
     (while (setq ename (ssname ss (setq i (1+ i))))
       (setq lst (cons (vlax-ename->vla-object ename) lst))
     )
     lst
   )
  
   (defun list->3pair (old / new)
     (while (setq new (cons (list (car old) (cadr old) (caddr old)) new)
                  old (cdddr old))
     )
     (reverse new)
   )
   
 ;;===============
 ;;  return a list of intersect points
 ;;===============
 (defun get_interpts (obj1 obj2 / iplist)
   (if (not (vl-catch-all-error-p
              (setq iplist (vl-catch-all-apply
                             'vlax-safearray->list
                             (list
                               (vlax-variant-value
                                 (vla-intersectwith obj1 obj2 acextendnone)
                               ))))))
     iplist
   )
 )
  
  
 ;;================
 ;;  Break entity at break points in list
 ;;================
 (defun break_obj (ent brkptlst / brkobjlst en enttype maxparam closedobj
                   minparam obj obj2break p1param p2 p2param
                  )
  
   (setq obj2break ent
         brkobjlst (list ent)
         enttype   (cdr (assoc 0 (entget ent)))
   )
  
   (foreach brkpt brkptlst
     ;;  get last entity created via break in case multiple breaks
     (if brkobjlst
       (progn
         ;;  if pt not on object x, switch objects
         (if (not (numberp (vl-catch-all-apply 'vlax-curve-getdistatpoint (list obj2break brkpt)))
             )
           (foreach obj brkobjlst ; find the one that pt is on
             (if (numberp (vl-catch-all-apply 'vlax-curve-getdistatpoint (list obj brkpt)))
               (setq obj2break obj) ; switch objects
             )
           )
         )
       )
     )
  
     ;;  Handle any objects that can not be used with the Break Command
     ;;  using one point, gap of 0.000001 is used
     (cond
       ((and (= "SPLINE" enttype) ; only closed splines
             (vlax-curve-isclosed obj2break))
        (setq p1param (vlax-curve-getparamatpoint obj2break brkpt)
              p2      (vlax-curve-getpointatparam obj2break (+ p1param 0.000001))
        )
        (command "._break" obj2break "_non" (trans brkpt 0 1) "_non" (trans p2 0 1))
       )
       ((= "CIRCLE" enttype) ; break the circle
        (setq p1param (vlax-curve-getparamatpoint obj2break brkpt)
              p2      (vlax-curve-getpointatparam obj2break (+ p1param 0.000001))
        )
        (command "._break" obj2break "_non" (trans brkpt 0 1) "_non" (trans p2 0 1))
        (setq enttype "ARC")
       )
       ((and (= "ELLIPSE" enttype) ; only closed ellipse
             (vlax-curve-isclosed obj2break))
        ;;  Break the ellipse, code borrowed from Joe Burke  6/6/2005
        (setq p1param  (vlax-curve-getparamatpoint obj2break brkpt)
              p2param  (+ p1param 0.000001)
              minparam (min p1param p2param)
              maxparam (max p1param p2param)
              obj      (vlax-ename->vla-object obj2break)
        )
        (vlax-put obj 'startparameter maxparam)
        (vlax-put obj 'endparameter (+ minparam (* pi 2)))
       )
       
       ;;=====================
       (t  ;   Objects that can be broken     
        (setq closedobj (vlax-curve-isclosed obj2break))
        (command "._break" obj2break "_non" (trans brkpt 0 1) "_non" (trans brkpt 0 1))
        (if (not closedobj) ; new object was created
            (setq brkobjlst (cons (entlast) brkobjlst))
        )
       )
     )
   )
 )



   ;;++++++++++++++++++
   ;;   S T A R T   H E R E                         
   ;;++++++++++++++++++
     (if (and ss2brk ss2brkwith)
     (progn
       ;;  CREATE a list of entity & it's break points
       (foreach obj (ssget->vla-list ss2brk) ; check each object in ss2brk
         (if (not (onlockedlayer (vlax-vla-object->ename obj)))
           (progn
             (setq lst nil)
             ;; check for break pts with other objects in ss2brkwith
             (foreach intobj (ssget->vla-list ss2brkwith) 
               (if (and (or self (not (equal obj intobj)))
                        (setq intpts (get_interpts obj intobj))
                   )
                 (setq lst (append (list->3pair intpts) lst)) ; entity w/ break points
               )
             )
             (if lst
               (setq masterlist (cons (cons (vlax-vla-object->ename obj) lst) masterlist))
             )
           )
         )
       )
       ;;  masterlist = ((ent brkpts)(ent brkpts)...)
       (if masterlist
         (foreach obj2brk masterlist
           (break_obj (car obj2brk) (cdr obj2brk))
         )
       )
       )
   )
 ;;===========
  
 )
 (prompt "\nBreak Routines Loaded, Enter BreakTouching to run.")
 (princ)



 ;;===========
 ;;  Break many objects with a selected objects 
 ;;  Selected Objects create ss to be broken    
 ;;===========

 (defun c:BreakTouching (/ cmd ss1 ss2)
 
   ;;  get all objects touching entities in the sscross
   ;;  limited obj types to "LINE,ARC,SPLINE,LWPOLYLINE,POLYLINE,CIRCLE,ELLIPSE"
   (defun gettouching (sscros / ss lst lstb lstc objl)
     (and
       (setq lstb (vl-remove-if 'listp (mapcar 'cadr (ssnamex sscros)))
             objl (mapcar 'vlax-ename->vla-object lstb)
       )
       (setq
         ss (ssget "_A" (list (cons 0 "LINE,ARC,SPLINE,LWPOLYLINE,POLYLINE,CIRCLE,ELLIPSE")
                              (cons 410 (getvar "ctab"))))
       )
       (setq lst (vl-remove-if 'listp (mapcar 'cadr (ssnamex ss))))
       (setq lst (mapcar 'vlax-ename->vla-object lst))
       (mapcar
         '(lambda (x)
            (mapcar
              '(lambda (y)
                 (if (not
                       (vl-catch-all-error-p
                         (vl-catch-all-apply
                           '(lambda ()
                              (vlax-safearray->list
                                (vlax-variant-value
                                  (vla-intersectwith y x acextendnone)
                                ))))))
                   (setq lstc (cons (vlax-vla-object->ename x) lstc))
                 )
               ) objl)
          ) lst)
     )
     lstc
   )
   (command "._undo" "_begin")
   (setq cmd (getvar "CMDECHO"))
   (setvar "CMDECHO" 0)
   (setq ss1 (ssadd))
   ;;  get objects to break
   (if (and (not (prompt "\nSelect object(s) to break with & press enter: "))
            (setq ss2 (ssget '((0 . "LINE,ARC,SPLINE,LWPOLYLINE,POLYLINE,CIRCLE,ELLIPSE"))))
            (mapcar '(lambda (x) (ssadd x ss1)) (gettouching ss2))
       )
     (break_with ss1 ss2 nil) ; ss2break ss2breakwith (flag nil = not to break with self)
   )
   (setvar "CMDECHO" cmd)
   (command "._undo" "_end")
   (princ)
 )

August 25, 2008

I had to trim down everything in order to fit into one post but here is the original because maybe i deleted something i needed in my routine possibly:unsure: lol

breakall.lsp