伪源码
- ;21、绘截描线
- (defun c:hjmx ( / catch e1 e2 ent ex fz getfun ls ob ob1 obs okp p1 p2 pLst pn poly ps psx ss tp tps)
- (defun getfun ()
- (if p1
- (progn (initget "C H U") (setq p2 (getpoint "\n指定下一个点[闭合(C)/描边与直线切换(H)/放弃(U)]<退出>:" p1)))
- (progn (initget "S") (setq p1 (getpoint (strcat "\n请指定'绘截描线'的起点[设置(S)]<退出>:"))))
- )
- (setq psx (list p1 p2) p1 (car psx) p2 (cadr psx))
- )
- ; 主程序
- (setq tps '("LWPOLYLINE" "CIRCLE" "ARC" "ELLIPSE") fz 0.03 p1 nil p2 nil e1 nil e2 nil
- ps nil pLst nil ob nil obs nil okp t poly nil ; pLst为'((p1 p2 e1 e2 ob) ...)
- )
- (while (and okp (setq catch (vl-catch-all-apply 'getfun nil)))
- (if (and catch (not (vl-catch-all-error-p catch)))
- (progn
- (if (and p2 (listp p2) p1 (< (distance p1 p2) fz)) (progn (setq p2 nil) (princ "\n距离太近,无效点!")))
- (cond
- ((and p1 (listp p1) (not p2))
- (if (and (setq ent (nentselp p1)) (setq e1 (car ent) tp (En-GetProp* e1 0)) (vl-position tp tps))
- (setq p1 (cadr ent) ex (sssetfirst nil (Data-ToSs* e1))) ; (nentselp (getpoint))
- (setq e1 nil)
- )
- (setq ps (cons p1 ps) pLst (cons (list p1 p2 e1 e2 ob) pLst))
- )
- ((and p2 (listp p2) p1)
- (if (and (setq ent (nentselp p2)) (setq e2 (car ent) tp (En-GetProp* e2 0)) (vl-position tp tps))
- (progn
- (sssetfirst nil nil) ; 清除之前的选择
- (setq p2 (cadr ent) ex (sssetfirst nil (Data-ToSs* e2))) ; (nentselp (getpoint))
- (if (and e1 (equal e1 e2))
- (setq ob (Curve-PartCopy* e1 p1 p2)) ; 在同一条曲线上 要描边
- (setq ob (vlax-Invoke *Model* "AddLine" p1 p2)) ; 绘制直线
- )
- ) ; (getpoint p1) (getpoint p2) (Else-TestPts* ps) (length ps) (length pLst) (setq ps nil)
- (setq e2 nil ob (vlax-Invoke *Model* "AddLine" p1 p2)) ; 绘制直线
- )
- (setq ps (cons p2 ps) obs (cons ob obs) pLst (cons (list p1 p2 e1 e2 ob) pLst) p1 p2 e1 e2)
- ; (if (> n 1) (setq sso (cadr (ssgetfirst)))) ; 获取并保留之前的选择
- ; (sssetfirst nil nil) ; 清除之前的选择
- ; (sssetfirst nil (Ss-Union* sso ss)) ; 夹点显示
- )
- ((= p1 "S") ; 只能最开始设置一次
- (princ "\n暂未添加设置信息,后续增加,谢谢!")
- (princ)
- )
- )
- (cond
- ((and (> (length obs) 1) (= p2 "C")) ; 闭合并退出 并 校对悬挂点
- (setq okp nil ss (cadr (ssgetfirst))) ; (sssetfirst nil ss) (sslength ss)
- ; (setq poly (car (Poly-Joina* obs t t nil nil nil))) ; (Poly-Joina* enobss polyp delp lay litp c)
- (setq poly (Cmd-JionToPoly* (Data-ToSs* obs) fz))
- (Ob-MdfProp* poly "Closed" -1)
- ; (sssetfirst nil nil) ; 清除之前的选择
- )
- ((and e1 (equal e1 e2) (= p2 "H")) ; 切换
- (setq ls (car pLst) p1 (car ls) p2 (cadr ls) ob (nth 4 ls)) ; (getpoint p1) (getpoint p2)
- (if (= (vlax-Get ob "ObjectName") "AcDbLine")
- (setq ob1 (Curve-PartCopy* e1 p1 p2)) ; 在同一条曲线上 要描边
- (setq ob1 (vlax-Invoke *Model* "AddLine" p1 p2)) ; 绘制直线
- )
- (vlax-Invoke ob "Delete") ; 删除当前线
- (setq ob ob1 obs (cdr obs) obs (cons ob obs) pLst (cdr pLst) pLst (cons (list p1 p2 e1 e2 ob) pLst) p1 p2)
- )
- ((and p1 p2 ps pn (= p2 "U")) ; 撤销
- (setq ls (car pLst) p1 (car ls) p2 (cadr ls) e1 (caddr ls) e2 (nth 3 ls) ob (nth 4 ls))
- )
- )
- )
- )
- )
- (if (and (not poly) (> (length obs) 1))
- (setq poly (Cmd-JionToPoly* (Data-ToSs* obs) fz)) ; (setq poly (car (Poly-Joinv* obs t t nil nil nil)))
- )
- (setq ex (sssetfirst nil nil) getfun nil) ; 清除之前的选择,清除子函数
- (princ "\n'绘截描线'完毕,感谢使用!")
- (princ)
- )
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