Is it possible to know if a point in below a direction vector or a line? I'm not good at maths and I'm having a really hard time figuring this out, I seen some answers to doing this in a 2D but can't find anything for 3D.
I have a capsule that is laid horizontally and I want to know if a point is below or above a line which goes through the bottom of the capsule to the top of the capsule. I attached an image that might explain it a bit better.
I have a Position Vector for the point, direction vector of the capsule, and the position vector of the capsule. and I can find the bottom and the top of the capsule if needed.