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  1. I can't find a way to draw an arc off the end of a line or arc that is NOT the last entity and have it act as though it was continuing in the normal way, like it does when continuing off the end of the last entity drawn. As in, have it behave like an arc coming off the last entity but select a random different arc in the drawing. I always have to trace the arc or line that I want to continue off of, then use arc continue as normal. Tangent does not work because then you have to pick Center or End and then you're locked into an arc that is not behaving like a continuing arc. I hope this makes
  2. Hi all - I created a lightweight polyline by filleting two straight polylines to create 1 polyline that contains an arc. I would like to convert the arc into a series of straight polylines that mimic the original shape of the arc, while not disturbing the straight parts of the polyline. I found a .lsp routine that does this perfectly, but it only works for the older heavyweight polylines. Can anyone help modify this routine so it works for lightweight polylines or provide another suggestion? Id rather not convert to heavyweight, use the routine, and convert back to lightweight. Thanks so much!
  3. this lisp convert polyline segments to arcs . work one line for time . i need select 1000 polylines for times. I'm new in autolisp and i do know what change in the code : (defun c:lwsegs2arced ( / massoclst nthmassocsubst v^v unit _ilp doc lw enx gr enxb p1 p2 p3 b i n ) (vl-load-com) (defun massoclst ( key lst ) (if (assoc key lst) (cons (assoc key lst) (massoclst key (cdr (member (assoc key lst) lst))))) ) (defun nthmassocsubst ( n key value lst / k slst p j plst m tst pslst ) (setq k (length (setq slst (member (assoc key lst) lst)))) (setq p (- (length lst) k)) (set
  4. hello my frieand , how can i repeat Arc (Center , start , end ) Command without select From Draw tab? i have problem with this Command when i want to use Continuous, everytime i Should select again from Draw Pannel of Home Tab for use again! ( i want to use this like move command , for ex : select move & use that , Click Enter and use again from Move ) but in the Arc Command when u Click enter , autocad select Arc whit 3 Points!
  5. Hello, I am trying to draw a solid object by AutoLISP. But I got stuck while drawing an arc. Please see below picture where I got stuck. I need this arc parallel to the lines below it. I tried some UCS command but at that time arc shown up somewhere irrelevant. Couldn't figure it out. I'm doing something wrong. (I can post my .lsp here however it might be confusing for you as it contains many variables defined by me) Can anybody help please?
  6. I have been trying to figure this out for a couple of days now. The only thing I could find is this LISP that takes the Ellipse properties and uses them to creat an arc. When I use this, the start and end angles are not correct in the drawing. Ellipses must have been drawn in a different UCS). I have tried to get the LISP to use the start and end points of the ellipse along with the radius and center point. For the life of me I cannot figure it out. If anyone knows how to do this please let me know. *NOTE* Elllipses that I am trying to convert have the same minor and major radii.
  7. In the attached drawing, where three circles are tangent to each other (top part of drawing), I draw three complete circles which are tangent and then use trim to trim the unwanted parts. But today I heard a new way to draw with no need for trimming. Apparently this method draws the arcs instead of circles. But I wonder about the degree of arcs. Also which way is faster and easier to draw, is a question for me. I couldn't find a complete solution for drawing arcs for this case. Any comment in this regard, is highly appreciated. 24.dwg
  8. I have a number of large files that have multiple layers with many simple objects. I wish to have a LISP program that searches the file and for certain layers, it looks for line and arcs that have the same start or end points I.E. a line has one end point that matches an arc or another line start point. Once it has found these, it converts the lines or arc into polylines and joins them together. I have a number of squares or rectangles that are constructed from simple lines and I want to end up with a closed polyline that is the same size as the original rectangle. This could also be an odd
  9. Hi all I'm working on some information that I have imported into LT 2017 from 12D survey software. Basically I have a road string (polyline made up of arcs) and I'm tidying it up. All I have done to this string is break it and change the layer it is on. When I go into Paper space and look at my plan layout, the broken polyline displays as though it is a full circle. In Model space it looks how it ought. I have double-clicked in the viewport and selected the circle and changed the colour for easy identification. Then, when I go back to Model space, I have a red curved polyline. No
  10. I am writing a LISP to find subtle kinks between curves. Right now I'm stuck on finding all the angles. Is there an efficient way to do this? I'm hoping to find the angles between connected curves, including arcs and polyline curves, and then highlight (draw a red circle?) around all angles with less than 20 degrees difference (160 to 200 degrees) between the lines. If possible I'd eventually like it to be able to automatically smooth the kinks, but I think that that part will have to come at a later time. On a completely unrelated note, I can't stop seeing this as a cyclops.
  11. I'm making an Audi R8 as a project but how can I extrude an arc on an angle? I'm trying to extrude from the top view to make the body side arcs.
  12. I attached the plan I am having trouble with. It is named first_plan.dwg. I created some lines with the arc tool and joined them to represent the electrical wiring in the layer called electrical wiring. I changed the linetype to a dotted and dashed style but it won't display in the model space and layout 1. Nor will it display when I hit print preview. Can someone point out to me what I am doing wrong? I am new to AutoCAD and this is my first plan. I am using AutoCAD 2015 for Mac. first_plan.dwg
  13. I attached the plan I am having trouble with. It is named first_plan.dwg. I created some lines with the arc tool and joined them to represent the electrical wiring in the layer called electrical wiring. I changed the linetype to a dotted and dashed style but it won't display in the model space and layout 1. Nor will it display when I hit print preview. Can someone point out to me what I am doing wrong? I am new to AutoCAD and this is my first plan. I am using AutoCAD 2015 for Mac. first_plan.dwg
  14. calafragilistic

    "Arc"-like Leader

    When I used to use R14, I had a customized leader command where the first click was the endpoint of a leader (as usual), the second click was like the midpoint of an arc, and the third click was the other endpoint of an arc. You could continuously keep clicking and producing more arcs connected to the leader block, but typically I would just end the leader there, and it would not end with a text attached to it. Since I upgraded to AutoCAD 2010, the LISP function that I used for that did not transfer over, but I would like to have that again, as the spline leaders that are standard in 2010 look
  15. Hi all, I design concrete swimming pools... I have a drafting issue that hopefully someone can shed some light on. I have attached a diagram for your reference. I need to draw a curved line that starts tangent to segment (A) and hits points 1-3 and ends tangent to segment (B). The floor of a pool obviously is a smooth curve, not a segmented line. I would love to be able to represent that accurately. Any ideas?? Pool Section 2.dwg
  16. Hey, I am tracing a curvy 2D shape using arc function. I want the outline of the shape very smooth. I would like to know how do I draw arcs that can be tangent to each other so eventually I can get this shape very smooth and nice. Thank you very much!
  17. How do I draw an arc/circle tangent to two other arcs/circles? Ultimately, I am trying to create a snail cam drawing.
  18. I need a lisp routine that can take a long polyline and delete all the arc segments, thus leaving multiple shorter polylines (all consisting only of straight segments). Can anyone help me with this please?
  19. This is the text-book exercise I am working on: Strictly speaking, the back of the jaw consists of two arcs and a tangent. I can't find anything in the book so far that deals with this so I am stuck. Can someone please help me out with a way to do the back of the jaw. Thanks BTW: as to the dimensions, I work in millimetres so I take the given imperial (inch) dimensions, multiply the number by 100, and call it mm. Hanger_Jaw.ipt
  20. I tried to connect these arcs together as you can see on the red arrows but they didn't look smooth, i use 3 points arc and another mothod was circle command. How would you guys do it?
  21. Hello guys, well i have a homework for the exams and i have no time, so i need your help. The question is, how i can measure the exact length of an arc (or a polyline) ? See the pic.
  22. Hi there all, I am new here so forgive me if my question is vague or likewise is a bit over the top. I have been sent a client's construction drawing for a care home where i need to design the sprinkler installation. The majority of the rooms have got the same head positions within them, but they have all got a slightly different angle as the building is shaped like a banana. Unfortunately its not a uniform radius that i can tell as the one side is larger than the other. So my question is this. Normally, on a square building, I drop in construction lines along the bedrooms so that
  23. Hi Guys, Here is what I could do till now with the below code (mainly from Tharwat, but I tweaked a just bit): 1) It asks for the user input to specify the origin (basically setting the UCS) 2) Export XY & Diameter detail to the excel file (converted XY to current UCS using trans function) 3) Adds a 0,0-Origin text so that user knows whether the origin is correct or not. what I'm looking for is this : 1) All the entities (arc or circles) should be numbered on the drawing 1,2,3 etc.... 2) The table what it creates should have the First column for serial numbers (per item 1)
  24. Hello Now that the problem with OS, XP, W7, 16bit, ... is solved with this little lisproutine, which I'm very happy for it, I discover another small limitation. I noticed that it only measures arc's and no lines. Is it possible to fix this problem? It would be great if it also can measures lines (at the same time time) Does anybody can help me with? Thx in advance Gr ARCRLVOOR_DimVoorSnijden.lsp
  25. Hi guys I just had an upgrade of Autocad 2010 to 2013. However, a very important lisproutine doesn't work properly anymore. What has happened? Can someone help me please? With the lisp I can select several arcs (not polylines!) and when I enter the length and the radius appeares above the selected lines. ARCRLVOOR_DimVoorSnijden.lsp Thx.
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