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本帖最后由 荒野孤行 于 2015-7-24 23:12 编辑
可以选择沿着曲线轨迹/路径不旋转/旋转阵列,同时阵列对象的比例也可以变化(但是需要将阵列的对象组成块),演示请见图示:
;;;******路径阵列 程序开始******
(defun c:t1 ()
(setvar "osmode" 15359)
(setvar "cmdecho" 0)
(command "undo" "be")
(princ "\n★功能:沿曲线路径阵列.\n")
(while
(progn (setq EntBlock (entsel
"\n选择要阵列的块(请确保图块的基点已设定于其中心位置):"
)
BlockEntname (car EntBlock)
)
(not (if (= EntBlock nil)
nil
(= (cdr (assoc 0 (entget BlockEntname))) "INSERT")
)
)
)
(princ
"\n提示:选取的不是图块或未选取任何图元,请重新选取:"
)
)
(setq BlockName (cdr (assoc 2 (entget (car EntBlock)))))
(while
(progn
(setq EntCurve
(entsel
"\n请选择路径曲线(多段线、直线、样条曲线、圆、圆弧或椭圆):\n"
)
)
(not
(if (= EntCurve nil)
nil
(wcmatch (cdr (assoc 0 (entget (car EntCurve))))
"LWPOLYLINE,LINE,SPLINE,ARC,CIRCLE,ELLIPSE"
)
)
)
)
)
(initget 6)
(if (not (setq num (getint "\n阵列总数量:<10>")))
(setq num 10)
)
(initget "Y N")
(if (not
(setq kw (getkword "阵列同时旋转对象:[是(Y) / 否(N)]<Y>"))
)
(setq kw "Y")
)
(initget "A B")
(if
(not (setq gongshi
(getkword
"\n选择计算图块比例变化的公式:[Sin(x)+1.2(A)/Cos(x)+1.2(B)]<A>: "
)
)
)
(setq gongshi "A")
)
(if (not (setq angle_start (getreal "请输入图块比例变化的起始角度值:<0>"))
)
(setq angle_start 0)
)
(if (not
(setq angle_end (getreal "请输入图块比例变化的终止角度值:<180>"))
)
(setq angle_end 180)
)
(setq angle_add (/ (- angle_end angle_start) num))
(vl-load-com)
(setvar "osmode" 0)
(setq ObjCurve (vlax-ename->vla-object (car EntCurve)))
(setq len (vlax-curve-getdistatparam
ObjCurve
(vlax-curve-getendparam ObjCurve)
)
)
(setq GapDist (/ len num))
(setq i 0)
(while (<= i num)
(setq NextPt
(vlax-curve-getPointAtDist ObjCurve (* i GapDist))
)
(if (= kw "Y")
(progn
(setq xielv (vlax-curve-getFirstDeriv
ObjCurve
(vlax-curve-getParamAtPoint ObjCurve NextPt)
)
)
(if (= (car xielv) 0)
(setq NextAng 90)
(setq
NextAng (/ (* (atan (/ (cadr xielv) (car xielv) 1.0)) 180)
pi
)
)
)
)
(setq NextAng 0)
)
(cond
((= gongshi "A")
(setq bili (+ (sin (/ (* i angle_add PI) 180)) 1.2))
)
((= gongshi "B")
(setq bili (+ (cos (/ (* i angle_add PI) 180)) 1.2))
)
)
(command "_.insert" BlockName "non" NextPt "xyz" bili "" "" NextAng)
(setq i (+ i 1))
)
(command "undo" "e")
(setvar "osmode" 15359)
(princ)
)
;;;;;;*******路径阵列 程序结束******
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