there you go

Achim

Hi,

this function works
in the german version it is called
"Zwei Elemente verschneiden" and "Mit Clipping" activatet.

Requirement is that the lines really have a point of intersection.

greetings
Christian

Hi Xavi,

I cannot confirm, that "Cut with Plane" doesn't work for 3D-lines with z not equal to 0.
It works for arbitrary 3d-lines. May be the function will be not correctly used by you.

Regards Jörg

I can confirm that it works correctly. even in the V2017

if I understand correctly use the boolean tool "difference" (don´t know the english name - obj1 minus obj2) for this. It also works with polylines, at least with simple ones:

Please first try a simple geometry, maybe yours is too complex.

1. build an object (e.g. a cube) which covers the area you want to delete
2. activate the boolean tool - allplan asks for the object which you want to cut. But sum function is possible
3. start sum funcion
4. activate the 3d polylines you want to cut (the two polygon lines in "Boolean1")
5. end sum
6. Allplan asks for the cutting objects - click your object of point 1

Hi xavi,

it ist very easy:

1. create box as 3D-solid with your 2D-(cutting)-rectangle as outline, height can be for instance 10 m
2. perform "Cut with plane" where you select all 3D-polylines and then one of the side-faces of your box as cuttin plane
3. delete all parts of polylines, which are outside of our box
4. goto 2. and repeat with another side face

works very well!