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Help for Sequence circles.


teknomatika
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Greetings.

I've been doing some very simpes routines.

One of them is designed to draw a sequence of circles with a radius increment values ​​and the z coordinate.

Unfortunately, without my being able to understand (I am still basic), the routine works properly sometimes, not others, drawing circles but without changing the z coordinate.

After the routine had wanted an evolution in order to draw a sphere composed of circles, but here I know that the requirement is complicated because the radius of each circle will have an appropriate value.

I appreciate the help.

 

;;v1
(defun c:scir ()
(setq pnt1 (getpoint "\n Sets center point of 1s circle:"))
(setq rcir (getreal "\n Sets the radius of circle:"))
(setq rinc (getreal "\n Sets a radius increment:"))
(setq incz (getreal "\n Sets z coord increment:"))
(setq ncir (getint "\n Sets n of circles:"))
(repeat ncir
(command "circle" pnt1 rcir)
(setq xpnt1 (car pnt1))
(setq ypnt1 (cadr pnt1))
(setq zpnt1 (+(caddr pnt1)incz))
(setq pnt1 (list xpnt1 ypnt1 zpnt1))
(setq rcir (+ rcir rinc))
);repeat
(princ)
);defun
(prompt "\nType SCIR")

 

scir_img.jpg

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You may have the OSNAP mode activated when there is no Z incrementation - try to disable it when input the center point:

 

(command "[color=red]_[/color]circle" [color=red]"_non"[/color] pnt1 rcir)

 

Regards,

Mircea

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Some quick revisions to your code:

 

(defun c:scir ( [color=red]/ incz ncir pnt1 rcir rinc[/color] )
   [color=green];; Localise your variables![/color]

   [color=red](if [/color][color=green];; allow for null user input[/color]
       [color=red](and[/color] [color=green];; all of the following must be non-nil[/color]
           (setq pnt1 (getpoint "\nCenter of 1st circle: "))
           (setq rcir (get[color=red]dist[/color] "\nCircle radius: " [color=red]pnt1[/color]))
           (setq rinc (getreal "\nRadius increment: "))
           (setq incz (getreal "\nZ-Coord increment: "))
           (setq ncir (getint "\nNumber of circles: "))
       [color=red])[/color]
       (repeat ncir
           (command "[color=red]_.[/color]circle" [color=red]"_non"[/color] pnt1 rcir)
[color=green]            ;; "[color=red]_.[/color]" to allow for other language versions and redefined commmands
           ;; [color=red]"_non"[/color] to ignore all OSnap when supplying the point[/color]

[color=red]            (setq pnt1 (list (car pnt1) (cadr pnt1) (+ (caddr pnt1) incz))
                 rcir (+ rcir rinc)
           )[/color]
       )
   [color=red])[/color]
   (princ)
)
(prompt "\nType SCIR")

Though, you may also want to look into using entmake for this task to increase performance, since creating simple entities (such as Circles / Lines) is relatively easy, e.g.:

 

(defun c:scir ( / incz ncir pnt1 rcir rinc )
   (if
       (and
           (setq pnt1 (getpoint "\nCenter of 1st circle: "))
           (setq rcir (getdist "\nCircle radius: " pnt1))
           (setq rinc (getreal "\nRadius increment: "))
           (setq incz (getreal "\nZ-Coord increment: "))
           (setq ncir (getint "\nNumber of circles: "))
       )
       (repeat ncir
           [color=red](entmake (list '(0 . "CIRCLE") (cons 40 rcir) (cons 10 pnt1)))[/color]
           (setq pnt1 (list (car pnt1) (cadr pnt1) (+ (caddr pnt1) incz))
                 rcir (+ rcir rinc)
           )
       )
   )
   (princ)
)
(prompt "\nType SCIR")

(Of course, this simple example doesn't account for changes in UCS)

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