＿Levin 发表于 2022-2-22 20:29:51

感谢楼主分享！

谢雷锋 发表于 2022-2-24 15:31:07

实用。

xsso 发表于 2022-2-25 14:58:00

学到了

magicheno 发表于 2024-9-12 22:35:27

感谢楼主分享

yanshengjiang 发表于 2024-12-23 20:42:47

lijiao 发表于 2022-2-17 11:33


应该没这么简单吧   我在别人那儿捡了一段代码：

;;164.47.3 [功能] pt到曲线的垂点不在延长线上，返回T
;;(HH:perPtIn (getpoint) (car(entsel)))
(defun HH:perPtIn (p curve / P1 P2 PA)
(setq p1 (vlax-curve-getClosestPointTo curve p))
(setq pa (vlax-curve-getParamAtPoint curve P1))          ;参数
(setq p2 (mapcar '+ (vlax-curve-getFirstDeriv curve pa) p1)) ;切线上一点
(equal (caddr (trans (mapcar '- p p1) 0 (mapcar '- p2 p1))) 0 1e-5)
)

yanshengjiang 发表于 2025-1-16 09:32:03

lijiao 发表于 2022-2-17 11:33


我这无效呢全是线外

(defun c:tt()
(setq e(car(entsel))
        p(getpoint))
(setq on1 (equal pt (vlax-curve-getClosestPointTo e p) 0.000001))
(setq on2 (equal pt (vlax-curve-getClosestPointTo e p t) 0.000001))
(cond
((and on1 on2) (princ "在线上"))
((and (not on1) on2) (princ "在延长线上"))
(t (princ "在线外"))
)
(prin1)
)

puzb2023 发表于 2025-1-20 19:35:21


下载试用一下，感谢分享
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