BHATCH PROBLEM

I am attempting to use the -bhatch command from within an autolisp
application. I am specifying a picked internal point with the routine.
If zoomed in close to the feature when the routine runs, everything works
fine, but if zoomed out a little bit it does not hatch the area, and
returns an error "Point is directly on an object." which it is not.... Any
thoughts? Thanks for your help!!

 

I believe that even though you're feeding it a point, the command treats it
as it would if you manually picked it -- if you're too far away to get your
pickbox inside the area , it says the point is on an object. Try setting
pickbox=0 in your routine.

 

Bob;

You need to change your OSNAPCOORD variable to 1 in your routine before
selecting point in a LISP command. The reason being is this variable
controls the priority for coordinate data entry and the default is "Keyboard
entry except scripts" and LISP is considered a script in this situation.
Setting the variable to 1 sets the "Keyboard entry" option.

If you go into the options dialog under User Preferences
(Tools->Options/->User Preferences) you will see the three settings in the
"Priority for Coordinate Data Entry". OSNAPCOORD controls this setting.

So whenever I am creating a routine that involves picking points (especially
if I am using the COMMAND function) I do the following:

(defun c:SomeCommand ( / *Error* iOldCord)

(defun *Error* (msg)
....error handling
(if iOldCord
(setvar "OSNAPCOORD" iOldCord) <--- sets setting back to
original
)
value in case of error
(gc)
(princ)
)

(setq iOldCord (getvar "OSNAPCOORD")) <--- Saves the current setting
(setvar "OSNAPCOORD" 1) <--- Changes setting to keyboard entry
.....function LISP
(command ...some command script info)
.....function LISP
(setvar "OSNAPCOORD" iOldCord) <--- Sets setting back to original value
(princ)
)

Good luck Bob.

(p.s. watch the word wrap)