How to turn off front-/backclip with lisp

[hemuni]

I'm looking for a way to turn of front- and backclipping from lisp.

 

It seems all the system variables for this are read only.

 

I have a working routine scripting the dview command, but it requires me to call up the dviewblock and i was hoping for a cleaner solution.

 

Does anybody know how to access these settings?

[Tharwat]

You can use the same command call to turn viewport(s) on and off .

[hemuni]

I am not looking to turn of viewports?

[Tharwat]

I don't think that I got what you mean , but I think you can use the command call (-vports) in sequence into lisp .

 

Can you explain more deeply ?

[hemuni]

I want to turn of frontclip and backclip without using the dview command.

[hemuni]

Clipping is used in the dview command to hide unwanted geometry:

 

[Tharwat]

So is that ( front clip ) represent an object e.g Polyline , line , circle ... etc ?

[hemuni]

http://docs.autodesk.com/ACD/2010/ENU/AutoCAD%202010%20User%20Documentation/files/WS1a9193826455f5ffa23ce210c4a30acaf-4bb1.htm

[pBe]

i guess the OP meant "RESET" the view

 

Will Dview work for you? guess you need a selection to prevent the "house" from appearing. then you can specify "off" on clip options.

Not sure though, its been like ages since i worked on 3D stuff.

 

Something like.

(command "_Dview" (ssget) "" "_clip" "_off" "")

[hemuni]

I am not trying to hide anything.

 

If you don't know the dview command you can read about it here:

 

http://docs.autodesk.com/ACD/2010/ENU/AutoCAD%202010%20User%20Documentation/files/WS1a9193826455f5ffa23ce210c4a30acaf-4bb1.htm

[David Bethel]

The only way that I've found is through (command "_.DVEIW" ....) sequence.

 

 

You may be able to use (command "_.DVIEW" (entlast) "" ....) and not have the dviewblock appear.

 

 

The same goes for camera and target. Sorry -David

[hemuni]

Bentley Prosteel has a function that turns off the clipping, so I'm sure there is another way.

[hemuni]

i guess the OP meant "RESET" the view

 

Will Dview work for you? guess you need a selection to prevent the "house" from appearing. then you can specify "off" on clip options.

Not sure though, its been like ages since i worked on 3D stuff.

 

Something like.

(command "_Dview" (ssget) "" "_clip" "_off" "")

 

 

No this will not work as an empty selection is not allowed.

[hemuni]

The only way that I've found is through (command "_.DVEIW" ....) sequence.

 

 

You may be able to use (command "_.DVIEW" (entlast) "" ....) and not have the dviewblock appear.

 

 

The same goes for camera and target. Sorry -David

 

using entlast is a good workaround, thanks!

[pBe]

No this will not work as an empty selection is not allowed.

 

Oh, silly me, now why would i think that ssget will not produce a non-empty selection.

 

Yeah (entlast) is a better option

[Tharwat]

using entlast is a good workaround, thanks!

 

And that would be by the use of command Dview

[hemuni]

And that would be by the use of command Dview

 

Why, would you prefer i used -vports?

 

I'm still looking for a better solution if anybody knows a way?

[Lee Mac]

Why, would you prefer i used -vports?

 

I'm still looking for a better solution if anybody knows a way?

 

For saved Views, the Clipping can be altered by modifying the 43, 44 & 71 DXF Group Code Values of the relevant View Table Entity; reference: http://docs.autodesk.com/ACD/2011/ENU/filesDXF/WS1a9193826455f5ff18cb41610ec0a2e719-7a49.htm

 

Example to turn front clipping off for a given View (refer VIEWMODE Sys Var):

 

(defun _TurnOffFrontClipping ( view / vmod )
   (if (setq view (tblobjname "VIEW" view))
       (setq view (entget view)
             vmod (assoc 71 view)
             view (entmod (subst (cons 71 (boole 2 (cdr vmod) 2)) vmod view))
       )
   )
)

Call:

 

(_TurnOffFrontClipping "YourView")

However, I do not know that there is a way to access the View Entity associated with the unsaved current Modelspace View

[troggarf]

Why, would you prefer i used -vports?

 

I'm still looking for a better solution if anybody knows a way?

 

Most people who work in 3D use multiple viewports in model space. So I am sure that the responses that you received are addressing that.

(defun c:unclip()
(getpoint "\nSelect Viewport To Turn Off Clipping: ")
(setvar "highlight" 0)
(command "dview" "" "cl" "off" "")
);end defun c:unclip