Select pline, get lenght, then

Jocker_Boy · 发表于 2022-7-5 16:18:25

Hi,

I want to select one pline, obtain the lenght then use this dimension to offset other pline.

Cheers,

Gonçalo

alanjt · 发表于 2022-7-5 16:27:44

(vlax-curve-getDistAtParam ent (vlax-curve-getEndParam ent))

The above code will return the total length of a line/curve/pline.
From there, you just plug in the value to the Offset command and go.

1958 · 发表于 2022-7-5 16:37:44

Find the length of the object can be so:

copy

(vla-get-length (vlax-ename->vla-object ent))

BIGAL · 发表于 2022-7-5 16:50:50

My normal one

copy

(vla-get-length (vlax-ename->vla-object (car (entsel "pick object" ))))

Jocker_Boy · 发表于 2022-7-5 16:54:12

Many thanks. It's perferct!!!

Tharwat · 发表于 2022-7-5 17:06:01

Not yet so.
Try to select any object that doesn't have any length property or just pin a point on the screen to find out the outcome of the codes.

Furthermore its not necessarily / recommended at all to convert any object to vla-object unless you are in need of that conversion and have no solution with AutoLISP vanilla ( DXF ).

BIGAL · 发表于 2022-7-5 17:12:28

Tharwat you are correct sometimes you need to pick an object then check what it is and is that property then available and I think it was to do with this exact request for length. It was just a simple example where it was expected the user would pick a suitable object.

Tharwat · 发表于 2022-7-5 17:24:38

Agreed, but I just wanted to pay OP's attention to such important issues.

[编程交流] Select pline, get lenght, then

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