How do i find center point on 3d curve?

Questions
1

CURVE

Hello! Can you help find a way to get the yellow center point?

default curve.geometry.boundingSphere.center gives me center where the red marker is

2

Hi!
Have a look at the docs: three.js docs

Something like this:

let midPoint = new THREE.Vector3();
curve.getPointAt(0.5, midPoint);
3

forget to say, that Iā€™m using the THREE.Line to draw this
And Line doesnā€™t have this method

4

Then itā€™s better to provide an editable working live code example to demostrate what and how you do.

5

Based on your line data you can replicate a pure mathematical version of your line via THREE.Path and then use the method suggested by @prisoner849.

6

how could i represent it if Path is 2d?

7

working on it

8

Iā€™ve assumed you curve lies in a conceptual 2D plane e.g. a XY plane.

If not, itā€™s correct that you canā€™t use THREE.Path. However, you can create an instance of THREE.CurvePath and use the add() method to add instances of THREE.LineCurve3.

9

Iā€™ll try this way

11

Thank you! This way enable me to get the mid point as the prisoner said. Canā€™t mark 2 solution at once, but you both helped me. Many thanks!

12

Hey @insuby, would you mind sharing your solution?