draw a circle with lisp.. (visually)

Then found a v-lispy trick on afralisp <<<

When I just did vanilla autolisp, I knew everything.
Now that I've started V-lisp, I don't know anything anymore.



Thanks

Bill

 

I begin to see what you want to do but think you should consider some
more practical and more easily achieved alternatives. Your offset program,
for example, does not allow a through point option, even though it offers
it as a keyword. I have tried doing these kinds of substitute commands
and found that the investment was not a profitable one.

Some alternatives:

1) If you want to "always" draw using ft/inches and always dimension
in millimeters use "DIMLFAC" variable to translate for you or use
dual dimensioning. Plotting such work is not a problem.

2)If you only "sometimes" enter feet and/or inches and always want results
in millimeters, then consider a transparent command that lets you enter
the feet and inches and let in convert for you.
(defun c:in()(* 25.4 (getdist "\nEnter distance in inches: ")))

3)If you usually work in ft/in and want to sometimes enter mm, the provide
a transparent conversion program. I use
(defun c:mm()(/ 25.4 (getdist "\nEnter distance in mm: ")))
You could also devise one that would be flexible enough to accept point
or distance data.

4)A non-modal key-in dialog box that would do the translation for you
while using ordinary commands, perhaps using VBA or another process
outside of AutoCAD using IPC of some sort.

Regards,
Doug

 

ok, further..

we do both imperial & metric drawings (us & canada).. but we want to be
able to enter imperial sizes when working in a metric drawing.. and have
it "see" the metric version.. (as my offset command does).

re: the through option.. the offset overlay I made works exactly like
the basic command (or at least when anyone here runs it).. not sure
what problem you had with it..

but it seems i've hit to top of the tree here.. so i'll go bark up
another somewhere else.. thanks for the ideas.

 

C,

Sorry wasn't able to help. Sounds like a great wish list item for
the next AutoCAD. I'd like to be able to enter feet and inches
even when in metric.

Regards,
Doug

 

Why don't you make a circle with, for example, a specified center point, and
an arbitrary radius (like 1). You can use entmake or command for this.
Then tap into the change command to change the radius (command "_.CHANGE"
ename "" pause). The empty quote is important. You still have the command
prompts in the command area but you can force those up and not visible by
doing this:
(command "_.CHANGE" ename "")
(terpri)
(terpri)
(terpri)
(command pause)

 

that wouldn't work when trying to use the 2P, 3P and TTR options of circle..