AutoCAD Visual LISP / AutoLISP :: Draw Polyline Which Point From Sub-entities Possible?
Jun 28, 2013
I continue learning....
(setq ins (vlax-ename->vla-object ( ssname sele cod)) nombre (vla-get-name ins) ) (setq bloque1 (vla-item (vla-get-Blocks (vla-get-Document ins) ) nombre ) ) (setq s_ent1 (vla-item bloque1 1)) (setq pt1 (vla-get-startpoint s_ent1 ))(setq pt2 (vla-get-endpoint s_ent11 ))(setq s_ent2 (vla-item bloque1 2)) (setq pt3 (vla-get-startpoint s_ent2 ))(setq pt4 (vla-get-endpoint s_ent2 ))(command "_pline" pt1 pt2 pt3 pt4 "c")
Why dont draw de _pline?
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Feb 15, 2012
I have a lisp routing that the user has to use, to create a ucs, that is exactly on the front of the entity the user selects, so that whne they are drafting, labeling, dimensioningn the 3D entity, none of the drating lines are hidden when plotted.
The code is as follows:
(setq obj (vlax-ename->vla-object ent))
(vla-getboundingbox obj 'LowerCorner 'UpperCorner)
(setq LowerC (vlax-safearray->list LowerCorner))
(setq UpperC (vlax-safearray->list UpperCorner))
[code]...
Then I do a condition to see which points are greater than others, and move the ucs depending on the view to the foremost point. The program works perfectly.... however, often, they forget to use it.
I was wondering if I could incorporate it in another lisp that everyone uses, but not having the user pick the entity they want to be in front of (sometimes they pick the wrong entity). Instead, take the group of entities (anywhere between 1 to 30 per drawing (these are piping spools, so the entity count is not that great in model space)) and set a front working plane in model space. Working in paperspace is not an option, we're just too deep into our templates and processes.
I know there is a vmin and vmax, but they are for the X and Y axis, a VMax along the Z-axis would be great.
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Mar 7, 2012
is there a way to draw a polyline and have autocad clip everything outside of that polyline and discard it so that i end up with a smaller drawing. only the information in that polyline, nothing outside of the polyline
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Nov 13, 2013
i need a vlisp program to draw polyline between two blocks.
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Oct 12, 2012
I have a drawing with various layouts that when I do a Zoom Extents the drawings is reduced to the size of a point.
I have done all the usual, ie: look for extra entities that are "out in space" so to speak and there are none.
I wonder if I have a block or image which may have an insertion point "out in space" and if this may be the issue.
Is there some way to Select all entities or Blocks (insertion point) that may exist outside a particular area ie: drawing limits.
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Apr 25, 2012
I have a inserted block with 4 tags for Length, Thickness, Elevation and Width.How can extract attributes tag values and draw a closed polyline + 2 internal lines, parallel to the block?
Block Name: ID_DATA
Tags: LEN, THI, ELE and WID.
Each internal line placed in a third width.
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Sep 2, 2013
I have drawings with a lot of polyline objects. I need a routine which will draw multilines by coordinates of vertexes of this polylines. For example, if there is a pline with coordinates 10,10 - 20,20 i want to draw in other layer MLINE with the same coordinates. I know it's should be simple but can not gues how to do it. I've never used LISP before.
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Mar 19, 2013
I am writing a routine that will place a piece of text at a specified point along a polyline. My problem is to determine the angle for the text. It needs to be the same as the segment of the polyline that it falls on. Just can't get my head around how to get that angle?
I can get a list of the vertex point of the polyline, but how do I determine the segment the point falls on?
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Oct 11, 2011
I've have code to test if the insertion point is within a closed polygon. But prior to testing the insertion point I use ssget to trim the selection set initially..
(ssget "CW" Pnt_List (list (cons 0 "INSERT")(cons 2 BlockName)))
this requires that the whole Crossing Polygon is visible, so I do a zoom first. This requires time. Is there a way I can do this that does not require the zoom?
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Jun 5, 2013
why do not draw the line between ptm1 and pt3?
(defun c:PUNTOM (/ pt1 pt2 pt3) (setq pt1 (getpoint "
Initial point : ")) (setq pt2 (getpoint "
Final point : ")) (setq pt3 (getpoint "
Offset : "))(setq ptm1 (mid (pt1 pt2))) (command "_line" pt1 pt2 "")(command "_line" ptm1 pt3) (princ));;;;;;;(defun mid (p1 p2) (list (/ (+ (car p1) (car p2)) 2.0) (/ (+ (cadr p1) (cadr p2)) 2.0) ));;;;;;;;
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Mar 18, 2008
I need to draw an ellipse at a specific point on a drawing.
i can calc the major and minor and i have a polar point of where it should be drawn.
i just need the code to draw the ellipse.
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Jun 7, 2012
I would like to take all the vertices out of a multiple-vertices polyline so that it reduces to just its start and end points, can this be done?
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Sep 21, 2013
Due to modeling purposes, I need to convert a 3D polyline to a spline. What I have been doing is:
- change polyline fit/smooth to cubic from properties
- convert polyline to spline by typing spline -> object
- method -> fit from properties
You can see the original 3D polyline (green) and the resulting spline (magenta) in the attached drawing.When I zoom in and measure the distance between the two entities at different points along them, at some points the perpendicular distance exceeds 5 millimeters, and I want to ensure the deviation remains under 1 millimeter or even less.
I know I can change the knot parameterization of the spline, and this does work at some locations, but the difference increases at others.Why is there a 5.6 mm difference between the spline fit point and 3D polyline vertex, as measure in the attached drawing?
Now, I can go and manually stretch the fit point to coincide with the vertex. Also, I can add fit points between existing ones to drag the spline closer to the original 3D poly.
However, some of my polys are really long, and it is very time-consuming to do this manually while measuring points along the entities to make sure the distance stays small enough.
how to automate this process? For example a lisp that would maybe take the original vertex points, add say maybe 3 (not too many) new ones between them, and then generate a spline while making sure the deviation is less than the set value of 1mm? I am using AutoCAD 2013.
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Jun 2, 2012
This is what i would like to make a lisp for: if the user gives the number tree the last tree inserted entity's are deleted. If the user gives the number four the last four inserted entity's are deleted.
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Oct 2, 2011
I know through the block command you can write out a selection of entities to a single drawing.But what I am wondering is if it is possible to have two drawings open, and transfer data quickly between the two?
As an example as we are detailing an assembly we create a title block around a detail, put dimensions and notes on as needed and would then like that to be transfered into another drawing next to the previously transfered detail drawing.
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Nov 27, 2012
I want to code this lisp. The problem which I face is, In some drawings which come from the client, there are a lot of blocks.
I want to detect the blocks which has no sub-entities (but attribute) and add a rectangle inside this block, If it is an attribute add a line from 0,0, to insertpoint of attribute.
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Jul 16, 2013
I am having nearly 1000 drawings where I need to change the title block in a new format.
I am stuck up in moving all the entities in cordinates 15,280 (upper point) and 205,55 (lower Point) to 275,294 (upper point and correspoing lower point.
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Jul 22, 2013
I have 2 selection sets and I'm looking for a more elegant method of checking if both sets contain the exact same entities (note - the order of entities might be different).
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Nov 19, 2013
I have redined AutoCAD's copy command alias to C, but to also do other things, like set a few important variables in the background. One of the lisps I've incororated are making new viewports, that also create layers that are visibly specific to the viewport being created.
We were tasked a while ago to do an easy job of copying entities (dimensions, text and what not) in a layout. The problem is, users are copying the viewports too, which is bit more ineffificent than using the create viewport command I developed.
Is there a way to see if a selection set includes (0 . "VIEWPORT") entities? If the check returns nil, well then all is good. If the check returns "true", then I can prompt the user that a "VIEWPORT" entity is selected. I can then exit the command, or ask the user if they are sure they want to copy the "VIEWPORT" entity.
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Aug 16, 2013
I have a lisp that draws variety of entities such as lines, arcs, hatches, points, blocks, text etc. How can I make one single block containing all of them, i.e. one block that has all items drawn since the lisp was invoked.
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Jul 9, 2013
I have code that will set and sae a current UCS to the front of an entity, of course, depending on the viewpoint. This is so, because we need all draft lines in front of 3D solids, such as dimensions, leaders for labels, text entities and so on (the reason for not putting these entities in paper space is another discussion ).
But I'll have on of two problems on numerous occasions:
1. The user forgets all together to run the command.
2. The user will pick the wrong entity that is in the foremost position in that view.
The code I have utilizes the following:
(setq ent (car (entsel)))
(vl-load-com)
(setq obj (vlax-ename->vla-object ent))
(vla-getboundingbox obj 'LowerCorner 'UpperCorner)
(setq LowerC (vlax-safearray->list LowerCorner))
(setq UpperC (vlax-safearray->list UpperCorner))
Then I'll analyze the X, Y and Z of both the lower and upper corners, and set my UCS to whatever is proper.
Is there a "LowerCorner" and an "UpperCorner" for all entities. I can't see "VSMIN" and VSMAX" working because the elevation of the returned coordinates is always "0,0"
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Dec 25, 2012
I have uploaded the handout for my AU2012 class to Google Drive. The link is [URL] It contains the detailed explanation for all the source code used in entmake-ing and entmod-ing the new MESH (aka Subdivision Surfaces) entities. [URL]
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May 19, 2013
I am modifying stuff in a dynamic block insert entity. There is no "endblk" entity at the end of these definitions and I need to cycle through every entity within the block definition. When it gets to the last entity, I get an error because you cannot entnext passed the last entity. There are 2 things:
1. How to retrieve the # of entities in a block without cycling through it.
Or
2. A quick lesson in the *error* function, I cannot figure out how to implement this. I basically want to to say:
(if (entnext myent)) returns a error, don't abort & continue on.
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Jan 17, 2012
I am trying to create a selection set (or LIST) of all objects inside a unnamed GROUP.
I found a means to access the unnamed group, however I am having trouble creating the list.
Command: (entget (cdr (assoc 350 (dictsearch (namedobjdict) "ACAD_GROUP"))))((-1 . <Entity name: 7efe6280>) (0 . "GROUP") (5 . "130") (102 . "{ACAD_REACTORS")(330 . <Entity name: 7efe5c68>) (102 . "}") (330 . <Entity name: 7efe5c68>) (100 . "AcDbGroup") (300 . "") (70 . 1) (71 . 1) (340 . <Entity name: 7efe6268>) (340 . <Entity name: 7efe6260>))
In the example above, there are 2 entities in the group.
What I want to do is to remove a certain entity from the GROUP, then delete the entity.
Repeat until all entities of that type are removed (I can figure this part out...).
How do I create a Selection Set (or LIST) of all entities inside a GROUP?
To access the first GROUP name in the dictionary:
(cdr (assoc 3 (dictsearch (namedobjdict) "ACAD_GROUP")))
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Dec 4, 2013
I am working on a flood inundation, I would like to find a lisp or command(i'm not finding) to connect two points with a given elevation following the surface file or surface entities.
here is a small section as example right now it's just guesswork, some of these have taken a week to connect all the sections.
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Apr 26, 2013
this is a Offset cutting plane line I want it to be all polylines but I can't get the ename of the end points of the polylines dose anyony know how
(defun ccp (/ pt2)
(SETVAR "CMDECHO" 0)
(setvar "angbase" 0)
(setvar "angdir" 0)
(command "polarang" 1)
(setq pt1 (getpoint "
[Code]....
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May 21, 2012
Is it possible to determine the sum of the lengths of all of the polylines on a certain layer? I'm trying to determine the total length of joint sealant on a building's exterior.
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Aug 23, 2012
I am using acad 2010. I have a contour generator that uses 3d polylines to make contours. I get depressions or tops where I don't want them. I need a lisp routine that will allow me to adjust the z value only on any 3d polyline. I need to raise or lower the z value at any vertex and repeat if necessary. I don't need to prompt the user- I am the user.
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Jul 19, 2013
I create contour line in TOPOGRAPH program, and I import these polylines to AUTOCAD. I have to set elevation for each polyline manually, and I waste a lot of time doing that.
So looking for lisp doing that automatically. I mean, invoke the command, set the first elevation and them select the polylines.
e.g. The first elevation is 530. The next polyline that I select is 531 and so on.
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Feb 17, 2009
For the sake of editing, I sometimes make LWPOLYLINES and convert them to regions so that I can union and subtract and intersect, etc.
then sometimes, like now, I want to work with them like as LWPOLYLINES again.
is there some command I don't know, or some routine or shall I make one?
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Feb 5, 2013
I've been searching on and off all morning for a lisp routine, without any luck. I'm trying to draw a pline with a pre determined width (5") and be able to draw unlimited line segments then automatically fillet with a pre determined radius (5").
I wrote this generic macro: ^C^CPLINEWID;5;PL;\\;FILLET;R;5;F;P;LAST; to save SOME time but I want unlimited line segments. Can this be modified or would a lisp be the better route to go?
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