我目前正在尝试在沿另一条折线运行的两个块（first_block，second_block）之间运行一条折线，在操作结束时调用一个插入函数，该函数使用开始和结束块的详细信息填充注释块（cable_name_tag） .
该多段线将横切其他块，并且通常需要与底层多段线（cable_ducting）平行运行，因此用户需要选择多段线的适当部分来放置注释，因为空间有时是有限的。
我已经注意到，如果我注释掉 second_block 并提供一个硬编码值，那么 ssget 函数可以正常工作，所以我有理由确定问题出在该代码中 first_block 和 second_block 的语法或处理上。
(defun c:cable ()
(vl-load-com)
(setvar "clayer" "cable layer")
(setvar "celtype" "bylayer")
(setvar "osmode" 515)
(command "_.pline"
(getpoint))
(while (> (getvar ' cmdactive) 0)
(command pause)
(princ "\npress enter to finish:"))
(setq elst
(entsel "\nselect cable segment: "))
(setq ename
(car elst))
(setq pt
(cadr elst))
(setq annopt pt)
(setq pt
(vlax-curve-getclosestpointto ename pt))
(setq param
(vlax-curve-getparamatpoint ename pt))
(setq preparam
(fix param))
(setq postparam
(1+ preparam))
(list (setq pt1
(vlax-curve-getpointatparam ename preparam))
(setq pt2
(vlax-curve-getpointatparam ename postparam)))
(setq cable
(entlast))
(setq cable_start
(vlax-curve-getstartparam cable))
(setq cable_start_point
(vlax-curve-getstartpoint cable))
(setq cable_end_point
(vlax-curve-getendpoint cable))
(setq cable_end
(angtos (angle '(0 0)
(vlax-curve-getfirstderiv cable 0.0))))
(setq first_block
(ssget "_c" cable_start_point cable_end_point
(list (cons 0 "insert")
(cons 2 "first_block"))))
(setq second_block
(ssget "_c" cable_start_point cable_end_point
(list (cons 0 "insert")
(cons 2 "second_block"))))
(setq end_cable
(ssname second_block 0))
(setq start_cable
(ssname first_block 0))
(setq $end_cable
(vla-get-textstring
(cadr (vlax-safearray->list
(variant-value
(vla-getattributes
(vlax-ename->vla-object end_cable)))))))
(setq $start_cable
(vla-get-textstring
(cadr (vlax-safearray->list
(variant-value
(vla-getattributes
(vlax-ename->vla-object start_cable)))))))
(setq cable_name
(vlax-curve-getendparam cable))
(command ; insert cable param
"-insert"
"cable_name_tag"
annopt
"1"
"1"
cable_angle
cable_name
$start_cable
$end_cable
"144"
cable_length))
我被困在这个角落里，如果有人能提供任何帮助、建议或指示，我将不胜感激。
谢谢大家的时间。