AutoCAD Visual LISP / AutoLISP :: Divide Spaces With Max Gap - Draw Lines Between 2 Points
Feb 6, 2012
I have to put some trusts between two beam. It sounds easy but i'm unable to handle the divide and round off commands in the lisp. See attachement also.
To draw my trust between the 2 beams, what I normally do, is that I manually take the distance between the two points say it's 10 000 and wrote it down. Then I divide it by my max gap, say 1200, it is the max space between trust.
10 000/1200 = 8.333333 that's the result of how much trust and space between them that i'll need, 8 trusts, 9 spaces between the 2 beams. (That is what I'm unable to do in the lisp, tell it to round off 8.333 to 9 and use 9 for divide command)
What I manually do at this point to draw these trust is that I must create a temporarly line between the 2 beams, perpendicularly to these and divide it by 9.
It gives me 8 cross (or point) to draw my trusts. All this is long to do manually because I have many bay in building and I have to redo this operation for every the bay.
So, what I would like the lisp to ask is:
Specify distance between two beams (Between where and where) :
Specify the lenght of the trust :
Specify max gap: I would like to answer a number here, say like 1200 max
(The lisp should draw the lines on the current layer, color and linetype of the current layer and not draw a line at the beginning and at the end because that's where my Beams are. I hoped you understand, see attachement.
Should also have something that handle a ESCAPE hit or cancel, something like this:
I need to divide thousands of lines into half, but AutoCAD divide command can only allow you to select one line at a time.Is there any way we can divide multiple lines at once.
I need a easy way to create a lot of small regions, or divide a big region in lines intersections, or a fast way to pick points inside objects.
Its like that:
imagine that you do 100 horizontal lines and then 100 vertical lines. Now you have 10.000 squares. i need a fast way to make a region in each one of then.
So its too much trouble to pick points inside each one of then. i need to divide a big region or a fast way to create Plines or objects with the little squares. And i cant use array because they aren t regular squares.
Its something that i do often, its not a one time thing. This is necessary in structure analysis modeling, i export this dwg to a dxf file, that i use on a finite element program.
I'm trying to change a routine i just wrote that draws 3d pipes. I wanted to make it so that when a user selects the beginning point and ending point of the pipe, the LISP changes the ucs to that vector, draws the circle at the beginning point and extrudes it to the second point.
It actually works great except when the ucs changes, so do my user points because of teh origin change. Is there a better way I might get this to do what I wnat it to?
(setq ip (getpoint " Pick First Point:"))(setq ep (getpoint " Pick Second Point:"))(command ".ucs" "za" ip ep)(setvar "osmode" 0)(command ".circle" ip "d" od)(command ".extrude" (entlast) "" (distance ip ep))(command ".ucs" "w")(setvar "osmode" oldsnap))
how to use AutoLISP to draw lines between two points. I have x,y,z coordinates for the end points in an excel sheet which I can save as a text file. I need to pull the coordinates from the file and use them to draw the lines. There are 2000+ lines so it is not feasible to draw them manually.
The above gets me the grid lines; but I have a block inserted at both ends of the grid line; how do I get the selection of those entities (selection set "frame") after each array?
or I would need to map a point list and draw each grid individually how do I go about that?
Attached is the sample of the output I'd like to achieve using LISP.
I'm working on a program that requires me to analyze a series of 3D coordinates (which describe the start and end points of individual lines) and combine those points that are collinear (there are lots of smaller line segments, some of which are co-linear and overlapping in space) into one single line.
how to analyze these points to find out which ones can be combined. For example, I might have 6 lines, 3 are separate and have their own specific orientation, but 3 are overlapping and in the same direction (look as a single line on the screen). I'd like to modify my point list so that it describes 4 lines... (the 3 individual ones and one which combines the 3 overlapping lines).
Is it possible to turn off the UCS icon in model space as well as in each layout? I'd like to set this up in the acaddoc.lsp files so that they're turned off in all opened drawings.
I have little Autolisp experience, what I need is a lisp routine that will divide a 3D Poly line to say about 1000 points and add index to the points from the start of the line to the end of the line. It is very important that the index be from the start to the end of the line, because we extract the info to excel and then use the x,y and z co-ordinate of the points on our hydraulic analysis program. We need to have the index and the x, y and z co-ordinates on our Excel sheet sorted by index and not by x, y and z.
To be more clear the 3D poly is a pipeline profile so we need to have the points in order by index and not by x, y and z.
do you know command or lisp that will do new pollyline between two polyline on 1/3 or 1/4 space between them.
I need sommething that would be faster,know is use measure on pollilines then i draw between horizontall polylines on verteks or point new pollyline and then divide it on 4 or 3 parts.
I need a function that will allow me to do a "divide" with blocks but I need the single attribute to remain intact.
I need the blocks to align with object and keep the attribute. I did get it to work with constants but the function that I need to run next failed because of the constant. My variable is preset and locked.
I'm making a program that reads a property file that follows the format:
"key=value" for each line on the text file.
One specific line has the key "file" and the value is some file path that includes a space.file=C:/my folder/my file.txt
Now I can extract what the key and value is for any given line in the file.However, I want to put all of the data into an Associative List so that I will not need to keep opening the file each time I search for information. I've been using the cons function in order to create a dotted list, which is successful. However I have an issue when I add this dotted list to the end of my associative list.
Suppose I have a key and a value already stored inside variables. Below I have two lines of code, first the dotted list portion is printed, and works as expected. The second line adds that dotted list to the associative list:
Now, the dotted list is inserted properly and looks like this after printing the whole associative list: ((version . 1.0.1) (file . C:my foldermy file.txt))
I want to take a Radio Column with 10 Items and make two columns of 5 Items, so that onlu one of the ten radio buttons are selected. This is aide in spacing on the Dialog Box. I am trying not to re-write the whole program, just add a few options.
I tried to add another Radio_column, it seperates it, but its two separate sections.
I have a drawing that has 2D pipeline (only x and y, z value =0) and 3 topo contour lines ( with x, y and z vaules). I need to divide the the 2D pipeline into say 2000 points and then get the corresponding z values from the topo contour lines. I think it can be done by interpolating between the z values for the two apparent intersection points of the 2D line and the contour lines, the x and y values will be the same for the points that falls between these two aparent intersections. Is there any lisp out there that can do that.
With all of you fine teachers, I have the know-how to get the start and end values of a line.
Do you think there is a way to get a point returned that represents the true intersection of the two lines, without having to involke a user defined "getpoint" function using "intersect" osnap?
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
how I would go about writing a function that would calculate the length of a diagonal of a rectangle using SQRT function? I've been trying but so far nothing!
I've written my first little Lisp function.What it's for is drawing a simple borehole profile that can then be used to draw stylized cross sections on top of it.
Upon start the lisp, pick a point on screen (to get the X coordinate [x1 below]), then enter ground level at the command line [g1 below], then enter as many thicknesses as are present in the borehole log (will vary, but typically between 3-12). These I added to a list, because that seemed to make sense when I did it.
What I want it to do then is draw a pline from x1, g1 down to the next point (x1,g1 minus the 1st thickness), then the next (x1,g1 minus the 2nd thickness) etc., to the bottom of the borehole.
Then my CAD guys can sit there, and using the borehole logs, enter the values of the boreholes and it draws them on the screen, making it easy to join th dots.
It might be good if it placed a Acad point at each point as well, but I'm not overly bothered about that at the minute.
I would like to be able to draw squares by the area they should have. So that if I need a square of 50m2 autocad automatically draws a square of sqrt(50) x sqrt(50)
Because right now I have to draw 200 squares with 100 different areas and I have to calculate and manually draw each one of them.
The first rectangle is drawn from 0,0 at the World Coordinate System. There is never any trouble with the code below when the objects are drawn at the WCS. The problem is when I try to draw a bounding box around an object while in another UCS. It seems that it always draws the bounding box at the WCS instead of my UCS. I have used (trans <pointlist> 0 1) on all combinations it seems and I still cannot get it to draw the bounding box at the current UCS.
I need to place a circle, of a user-defined radius, as a marker at the endpoints of all lines in a drawing. how to accomplish this using lisp? It doesn't matter if they overlap; I can use OVERKILL to delete those objects.
