koobas.hobune.stream
Find segment point perpendicular to plane
I have 2 Vector3 points, and I have to find a point which creates a segment perpendicular to the plane formed by these 2 points and Vector.up.
As in, I have 'a' and 'b' and I have to find the red points. I have no idea how this could be done.
Best Answer
Google vector cross product. Should do the job nicely
This works. In all honesty, I've tried this before, but failed to implement it correctly because I called "Vector3.up" as the 3rd point in the function, and not "a + Vector3.up". As in, 'up' relative to point 'a';
Code from docs.unity3d.com which I used: (in case anyone stumbles on this in the future and needs it)
Vector3 GetNormal(Vector3 a, Vector3 b, Vector3 c) {
Vector3 side1 = b - a;
Vector3 side2 = c - a;
return Vector3.Cross(side1, side2).normalized;
}
