Choose snap setting during command for entire command?
@Anonymous wrote:
I would like to know if it is possible during a command to select the snap point that I want to use for the duration of the command.
For example, if I'm drawing a polyline and want to snap only to midpoints I shift+right click and select midpoint, but that only lasts for that click. I would like to be able to shift+right click, select midpoint (or other desired snap setting) and then be able to draw my line using multiple clicks, snapping only to midpoints while that command is active.
....
I haven't thought of a way to do exactly that, but you could come sort of close.... You could build commands for specific entity types with embedded selection of Osnap mode(s) to be used for only that one running of the command, but to remain in effect through to the end of it. Here's a Polyline command that asks you first what mode(s) you want, uses only that/those during the command, and then when you're finished, restores the prior mode(s) setting:
(defun C:PLOS ; = Polyline with Osnap Setting (/ osm) (setq osm (getvar 'osmode)) (initdia) (command "_.osnap") (command "_.pline") (while (> (getvar 'cmdactive) 0) (command pause)) (setvar 'osmode osm) (princ) )
It has what might be considered an advantage over what you describe, in that you can include more than one mode.
Kent Cooper, AIA 
Easiest way is to pick on the osnap icon and uncheck any of the snap and pick only midpoint.
From the command line you can use
'osmode 2
Which could be easily made into a macro and added to a Shortcut Menu in the CUI.
GrantsPirate
Piping and Mech. Designer
Always save a copy of the drawing before trying anything suggested here.
----------------------------------------------------------------------------
If something I wrote can be interpreted two ways, and one of the ways makes you sad or angry, I meant the other one.
Jo @Anonymous,
Have you considered setting only Midpoint in your Object Snap settings?
Please select the Accept as Solution button if my post solves your issue or answers your question.
@Anonymous wrote:
.... You'll have to help walk me through how to use your code though. I've never used anything like this before. Curious to see how easily it is executed in my workflow.
Copy that code into a plain-text editor such as Notepad. Save it to a file with a .LSP filetype ending, in some known location -- you can call it whatever you want otherwise, like PlineOsnap.LSP or something -- preferably something that will be meaningful to you next year. In AutoCAD, type AP [the alias for APPLOAD], navigate to where you saved that file, and Load it. Then type PLOS [the command name is always the part following the C: near the beginning of such command definitions].
It could be made a lot more sophisticated, but try out the basic version. There's a way to have it automatically loaded in every drawing you open or start, if you need it often enough for that, so you don't need to Load it yourself. And a command call for it can be put into menu items of various kinds, if you would use it enough to justify that.
Kent Cooper, AIA
See the link for adding a macro to your setup.
GrantsPirate
Piping and Mech. Designer
Always save a copy of the drawing before trying anything suggested here.
----------------------------------------------------------------------------
If something I wrote can be interpreted two ways, and one of the ways makes you sad or angry, I meant the other one.
You can fire the osnap dialog box in the middle of a command by selecting the little down-arrow next to the osnap button in the tool tray then selecting "Object Snap Settings". Any changes made there will continue for the rest of the command and beyond.
Accepted solution
@Anonymous wrote:
Kent1Cooper, thanks for the additional instruction. I was able to successfully create, load, and run your lisp. The only thing is that I have several osnaps selected as my default draft settings and to uncheck the majority of them to do what I'm looking for takes too much time unfortunately.
.....
Then have it start with a clean slate, and you can pick just one or a few, without needing to uncheck anything:
(defun C:PLOS ; = Polyline with Osnap Setting (/ osm) (setq osm (getvar 'osmode)) (setvar 'osmode 0) (initdia) (command "_.osnap") (command "_.pline") (while (> (getvar 'cmdactive) 0) (command pause)) (setvar 'osmode osm) (princ) )
Kent Cooper, AIA
Make sure you drag and drop the new command to the place I show, don't let it get dragged into the osnap overrides in the menu, place it above or below that. It won't show with Shift right click because that brings up a different shortcut menu.
I think many of us interpreted your request to have midpoint set to stay on, instead you want a one time toggle to midpoint only. Is that accurate? Shift+V is already set for a temp override for midpoint. While in a command, press and hold Shift+V and pick on the line, pline, etc., release and continue.
GrantsPirate
Piping and Mech. Designer
Always save a copy of the drawing before trying anything suggested here.
----------------------------------------------------------------------------
If something I wrote can be interpreted two ways, and one of the ways makes you sad or angry, I meant the other one.
Depending on your MBUTTONPAN setting, a mid-button (or shift+mid-button) will pop the osnap onscreen menu (pop0), touching the letter at the keyboard that is underlined in that menu will set a one-time osnap override.
