How to get lines intersection point?

Development Programming & Scripting
1

Hi anybody have an idea how to get intersection of two lines in blueprint ???

2

Hello! It depends on how this lines are set up. Line can be set by point and direction or two points or two linear equtaions in 3d space and so on…

3

I set up them by start and end point…

4

339177-detect-intersections.jpg
339177-detect-intersections.jpg1374×859 226 KB

For better Explanation I post an image

5

Ok, let denote them as (A, B) and (C, D). So

  • firstly we should check that lines can intersect. To do so they need to lay in one plane. So this determinant (Determinant - Wikipedia) should be equal to 0 while having any two rows as linear independent. This would mean that we can get the fourth point by vectors from first three of them:

     Ax-Bx, Ay-By, Az-Bz
 Ax-Cx, Ay-Cy, Az-Cz
 Dx   ,Dy  ,Dz

  • If prev point is Ok then you can just solve linear equations system