就这还要收费啊?很简单的啊

- (defun C:CENTLE (/ COUNT_1 COUNT_2 DIST OBJECTS_X OBJECTS_Y SCALE
- CENTER CENTER_2 ENTITY_1 ENTITY_2 RADIUS RADIUS_2 s
- LEFT LEFT_2 RIGHT RIGHT_2 NAME
- BOTTOM BOTTOM_2 TOP TOP_2 LAY)
- (setvar "CMDECHO" 0)
- (setq SCALE (getvar "DIMSCALE"))
- (setq DIST (* 0.1 SCALE))
- (princ "\n 请选择需画中心线的圆:")
- (setq OBJECTS_X (ssget '((0 . "CIRCLE"))))
- (setq s (getdist "\n 中心线伸出圆的长度:"))
- (setq OBJECTS_Y (ssget "P"))
- (setq COUNT_1 0)
- (while (< COUNT_1 (sslength OBJECTS_X))
- (setq ENTITY_1 (entget (ssname OBJECTS_X COUNT_1)))
- (setq CENTER (cdr (assoc 10 ENTITY_1)))
- (setq RADIUS (cdr (assoc 40 ENTITY_1)))
- (setq RIGHT (polar center 0.0 (+ RADIUS DIST)))
- (setq LEFT (polar RIGHT 3.141592654 (* 2.0 (+ RADIUS DIST))))
- (setq COUNT_2 (+ COUNT_1 1))
- (while (< COUNT_2 (sslength OBJECTS_X))
- (setq ENTITY_2 (entget (ssname OBJECTS_X COUNT_2)))
- (setq CENTER_2 (cdr (assoc 10 ENTITY_2)))
- (if (< (ABS (- (cadr CENTER) (cadr CENTER_2))) 0.0001)
- (progn
- (setq RADIUS_2 (cdr (assoc 40 ENTITY_2)))
- (setq RIGHT_2 (polar CENTER_2 0.0 (+ RADIUS_2 DIST)))
- (setq LEFT_2 (polar RIGHT_2 3.141592654 (* 2.0 (+ RADIUS_2 DIST))))
- (if (< (car LEFT_2) (car LEFT))
- (setq LEFT LEFT_2)
- )
- (if (> (car RIGHT_2) (car RIGHT))
- (setq RIGHT RIGHT_2)
- )
- (setq NAME (ssname OBJECTS_X COUNT_2))
- (setq OBJECTS_X (ssdel NAME OBJECTS_X))
- (setq COUNT_2 (- COUNT_2 1))
- )
- )
- (setq COUNT_2 (+ COUNT_2 1))
- )
- (setq left (list (- (car left) s) (cadr left)))
- (setq right (list (+ (car right) s) (cadr right)))
- (command "line" LEFT RIGHT "")
- (setq COUNT_1 (+ COUNT_1 1))
- )
- (setq COUNT_1 0)
- (while (< COUNT_1 (sslength OBJECTS_Y))
- (setq ENTITY_1 (entget (ssname OBJECTS_Y COUNT_1)))
- (setq CENTER (cdr (assoc 10 ENTITY_1)))
- (setq RADIUS (cdr (assoc 40 ENTITY_1)))
- (setq TOP (polar CENTER 1.570796327 (+ RADIUS DIST)))
- (setq BOTTOM (polar TOP 4.712388981 (* 2.0 (+ RADIUS DIST))))
- (setq COUNT_2 (+ COUNT_1 1))
- (while (< COUNT_2 (sslength OBJECTS_Y))
- (setq ENTITY_2 (entget (ssname OBJECTS_Y COUNT_2)))
- (setq CENTER_2 (cdr (assoc 10 ENTITY_2)))
- (if (< (ABS (- (car CENTER) (car CENTER_2))) 0.0001)
- (progn
- (setq RADIUS_2 (cdr (assoc 40 ENTITY_2)))
- (setq TOP_2 (polar CENTER_2 1.570796327 (+ RADIUS_2 DIST)))
- (setq BOTTOM_2 (polar TOP_2 4.712388981 (* 2.0 (+ RADIUS_2 DIST))))
- (if (> (cadr TOP_2) (cadr TOP))
- (setq TOP TOP_2)
- )
- (if (< (cadr BOTTOM_2) (cadr BOTTOM))
- (setq BOTTOM BOTTOM_2)
- )
- (setq NAME (ssname OBJECTS_Y COUNT_2))
- (setq OBJECTS_Y (ssdel NAME OBJECTS_Y))
- (setq COUNT_2 (- COUNT_2 1))
- )
- )
- (setq COUNT_2 (+ COUNT_2 1))
- )
- (setq top (list (car top) (+ (cadr top) s)))
- (setq bottom (list (car bottom) (- (cadr bottom) s)))
- (command "line" TOP BOTTOM "")
- (setq COUNT_1 (+ COUNT_1 1))
- )
- (command "redraw")
- (setvar "cmdecho" 1)
- (princ)
- )
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