Slot User Action

Note: This is an example file showing concepts of the Integration Kit. The code itself is not supported and will never be supported.
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(in-package :EXAMPLES)
(use-package :OLI)

(sd-defdialog 'slot
  :dialog-control :sequential-loop
  :precondition '(let ((curr-wp (sd-inq-curr-wp)))
		   (when (and curr-wp 
			      (not (sd-inq-obj-contents-read-only-p curr-wp)))
		     :ok))
  :variables
  '((FBACK)
    (POINT_1 :value-type :point-2d
	     :prompt-text "Pick first center point."
	     :after-input (progn
			    (setq fback (sd-start-rubberline-feedback point_1))
			    (sd-call-cmds (c_point point_1))))
    (POINT_2 :value-type :point-2d
	     :prompt-text "Pick second center point."
	     :after-input (progn
			    (sd-end-feedback fback)
			    (sd-call-cmds (c_point point_2))))
    (WIDTH :value-type :positive-length
	   :prompt-text "Specify width of slot."
	   :after-input 
	   (progn
	     (sd-call-cmds (delete_2d :c_user_point :all_2d))
	     (sd-end-feedback fback)
	     (sd-call-cmds (create-slot point_1 point_2 width))
	     (setq point_1 nil)
	     (setq point_2 nil))))
  :cleanup-action
  '(progn
     (sd-end-feedback fback)
     (when point_1
       (sd-call-cmds (delete_2d :c_user_point point_1)))
     (when point_2
       (sd-call-cmds (delete_2d :c_user_point point_2)))))


(defun create-slot (p1 p2 width)
  (let (p1p2
	normal
	offset-vec)
    
    ;;----- Calculation: -----
    (setq p1p2 (sd-vec-subtract p2 p1))
    
    ;; Calculate Normal of p1p2 vector:
    (setq normal (make-gpnt2d :x (- (gpnt2d_y p1p2)) :y (gpnt2d_x p1p2)))
     
    ;; Normalize Normal:
    (setq normal (sd-vec-normalize normal))
     
    ;; Calculate Offset Vector:
    (setq offset-vec (sd-vec-scale normal (/ width 2.0)))
     
    ;; Create infinite construction lines through the center points:
    (c_line_inf :two_points p1 p2)
    (c_line_inf :two_points p1 (sd-vec-add p1 offset-vec))
    (c_line_inf :two_points p2 (sd-vec-add p2 offset-vec))
     
    ;; Create Slot:
    (line :two_points (sd-vec-add p1 offset-vec) (sd-vec-add p2 offset-vec))
    (line :two_points (sd-vec-subtract p1 offset-vec)
	              (sd-vec-subtract p2 offset-vec))
    (arc :center p1 (sd-vec-add p1 offset-vec)
		    (sd-vec-subtract p1 offset-vec))
    (arc :center p2 (sd-vec-subtract p2 offset-vec)
	            (sd-vec-add p2 offset-vec))))

;