AutoCAD Visual LISP / AutoLISP :: Filter If SSGet Is Empty
Jan 23, 2013
I wonder if I have to check if the "ssget" is empty.
I have a lisp to zoom extents in visible objects on the screen.
My interest is to filter before applying:If I have selected objects, it zooms in these objects. If I'm not have selected objects, continue as it is today, applying a zoom in the visible scene.
The result would be similar to a zoom of "3dsmax" (press the Z key)
I've been twigging around with a selectionset, but no luck. I need to build a ss with several named blocks and a few dynamic blocks which get selected as anonymous. Unfortunately not all dynamic blocks should be selected and I can find no way of either filtering out a list of dynamic blocks to exclude nor any way to campare to a list of dynamic blocks that I want selected. Below is the best idea that I had but if I wrap it into a foreach with an exclusion list, I get an empty selection set returned. (I'm guessing that I need to trim the pairs each iteration and only return the matches instead.)
The other code is long and I'd rather not confuse things; if I do not try to filter out any Unames, then everything works great and fast. Once I add in the "foreach i blklst" the code breaks and I get:
I have some strings like the ones below. They are always in the same format. The first line is Cold Water, the second is Hot Water and the third is Hot Water Return.
I want to build a selection set based on whether it is CW, HWS or HWR. Right now I have a routine to retrieve the string by using ENTSEL. In other words if I want to use the line of text for Cold Water I have to select it.
I'd like to be able to window them all and filter the SS for only the string containing CW and conversly HWS and HWR. SSGET function filter.
Is there any way to isolate an item in a list for a filter? I'm setting a filter for SSGET and know that I can use the dotted pairs and I know I can use logical comparisions but what I really want to do is filter a single varialbe in the DXF group 10. For example, I'd like to only get entities with a specific Z value in DXF 10. Or even better to filter for a specified range of Y value or X value in DXF 10. If I could write something like (cons 10 (list * * 8.0)) where the asterisks were wild cards, that would do it but I'm not aware of such a wildcard. Is there any way to isolate a portion of DXF 10 in the filter?
I have this code that I wrote years ago that I want to update to select two types of civil3d objects and show them selected with grips on the screen. This function works fine
but if I add the extra object like this which I assume is the wrong syntax i only get the second type of objects. Need correct syntax I should be using for selecting more than one object in an ssget statement.
Distinctions between AutoLISP functions ssget and C# PromptSelectionOption method.AutoLISP ssget function is apply a function with no options and does not require an object selection.pre-selected target object should respond to the selection set.
However, and C# PromptSelectionOption, ignoring the pre-selected objects, select the new object is required.using the features of C# Prompt Selection Option expressed AutoLISP ssget do the same in,
I'm having an issue with using the SSGET to select a block so I can move it. I'm changing the UCS to be at the center of the top view in the program(user selects center) and the block is at 0,0,0 after changing the UCS. However when I use SSGET it doesn't select it. So I used:
(setq en(car (entsel " Select a block :")))(setq enlist(entget en))
and it lists the DXF Code of 10 as
(10 15.0893 13.5165 0.0)
How can I then select it if I don't necessarily know where the block is going to be?
If needed: AutoCAD 2013 User using Visual LISP for editing LISP and DCL files Also I have AutoCAD 2011 currently still available for us, but we are using AutoCAD 2013 for 99.9% of AutoCAD use
I have a data structure called LayerList in the format [LIST "LayerName" "Linetype" Thickness Color]I then use the following piece of code to go through the structure selecting polylines and converting all polylines on a given layer to the correct thickness
(foreach layr layerlist (setq player (car layr)) (if (setq ss (ssget "x" '((0 . "*polyLINE") (8 . player ) ))) (command "pedit" "m" ss "" "w" 0.15 "") (princ " No polylines exist!") ) )
However all i keep getting is Bad SSGET list value at the command line,
The below gets the block names of empty block records. The blocks may or may not be actually inserted in the dwg. In my case though, apparently they are nested in other blocks in the drawing I am working with... but it looks as if they are part of deeply nested block definitions and therefore cannot be purged. I checked a couple blocks (the code returns over 1000 in my case) it returns and there are no objects in its definition.
How can I force them out of a drawing - and hopefully reduce it's file size?
The code below collects empty blocks with the intent to delete them.However, it appears that if an Xref is currently 'unloaded' it apparrently collects that too. I could probably just test to see if the block is an Xref and avoid it... but how could I modify this to check if it is loaded and still empty?
I'm putting together some quick function that I can send 2 arguments and get from it the total area of a given hatch on the given layer. I think everything is in order but I'm having trouble with the selection set filter:
(DEFUN GET-HATCH-AREA (HATCH LAYR / area sset) (COND((AND(ssget "X" '((0 . "HATCH") (2 . HATCH) (8 . LAYR))) (SETQ area 0) (VLAX-FOR H (SETQ sset (VLA-GET-ACTIVESELECTIONSET (VLA-GET-ACTIVEDOCUMENT (VLAX-GET-ACAD-OBJECT)))) (SETQ area (+ (VLA-GET-AREA h) area))) (ALERT(STRCAT "Total area = " (IF (OR (= (GETVAR "lunits") 3) (= (GETVAR "lunits") 4) ) (STRCAT (RTOS area 2) " sq. in. (" (RTOS (/ area 144) 2) " sq. ft.)") (RTOS area) ) ) ) (VLA-DELETE sset) ) ) ))
How to automate the unreconciled layer list to automatically freeze all the layers in the list when opening drawing. This would force the user to select what layers they want shown rather than freezing / turning off the layers they don't want.
in order to filter for a certain attribute tag named MYTAG
I am working with a custom LISP routine which reports out to a CSV file, an attribute extraction file - but I need my routine to ONLY evaluate blocks which have the MYTAG attribute tag. Then, if it passes that first check, it evaluates another list of Tags within those blocks - a list of tags which I have specified elsewhere in the code.
I am trying to modify my existing code as little as possible, and I think that if I do it at the line (which I've pasted above) - that will "pre-qualify" my selection set....
ATTACHED LISP IS THE FILE I AM WORKING WITH --- THE ACTUAL LINE I WANT TO MODIFY IS AT:
I use extended data on 2d entity in AutoCAD 2010. In a lisp program, I have filtered with extended data selection. Filters work with entity like: line, polyline and Mline but with insert entity it don’t work.
I often work on drawings which have multiple xrefs, each having up to 100 Layers or more, so the layer manager can be a bit difficult to trawl through to find a local layer to select.
I know how to create a local layer filter using the code ~*|* from the new filter area in layer manager.
Ideally all I want to have to type in is: LOCAL and then the local layer filter would be created, with the filter name being Local-Layers (or similar).
Is there a lisp that will allow me to do a continuous dimension, but will alternate the dimension position from low, high, low and high? If there is no lisp already created, how to create one?
See Continuous dimension attachment for example.
I work at a glass and glazing company and this is how we dimension mullion width and DLO. See typical window dimensioning attachment for window elevation with dimensions.
I have a list ("temp.dwg" "temp2.dwg") and would like to add the string "insert text here" into each item in the list resulting in ("insert text heretemp.dwg" "insert textheretemp2.dwg"). how would i go about doing that using LISP?
Is there a way to programatically set a visual style before a drawing actually opens?
We have some huge models and people seem to forget to change their visual styles back to 2D wireframe before saving and exiting drawings. Some models will crash on some workstations when trying to open in a rendered mode.
I found a lisp with a function that looked to set viewport visual styles. But it does not seem to be supported anymore. --> (vla-put-VisualStyle vport 1)
I'm trying to write a lisp routine that, when I invoke the mleader command, osmode is set to "nearest" & orthomode is set off. I then would like the original settings to be returned.
Lisp that switches back on Selection Preview i.e. thickens and highlights lines when you hover over them?I don't know why, but they are always unticking the boxes.
Is it possible to execute a certain command based on multiple selections withinin a dcl? for example: two radio colums, one with selections A and B, and a second with selections 1 and 2. is it possible to program commands based on user selections from each column? ex: if A and 1- do a command. A 2- do a different command, etc...
I tried :
(action_tile "key1" "(setq A t") (action_tile "key2" "(setq B t")
I am trying to find a lisp that would get an attribute value (tag name = NBR_5) . I'm trying to run a simple routine that would let the user place the value from the titleblock attribute as text on a drawing. I see a ton of articles regarding getting attributes but I am not well versed in programming.
I'm trying to find acceptable point values to feed to the vlax-3d-point function for a vla-addmtext function. With vanilla lisp I just provide the point as x y = "7/32" "2-3/8". So I assumed that I could drop a 0 in for the z like: (VLAX-3D-POINT "7/32" "2-3/8" 0).
Then I thought I was going to be tricksy and try (vlax-3D-point (getpoint)) believing that I could pick the point and get what I need to feed the function, but yet again, no deal. The command line gave me:
node of #<variant 8197 ...>
Nothing I can use in my code. So how do I find the point in a format that vlax-3d-point will like?
