Help With Inverse Transform Points

Unity Engine
1

Hello,

Thanks in advance. Having a bit of a rough one with good old Unity today. Basically I’m trying to create a scene in which game object A moves around game object B (the user controls B). I’ve got a script on A that gets the inverse transform point of B as it’s moving around.

Now what I want to do is create a duplicate set of both of these objects (C and D) and move them elsewhere in world space (position and rotation wise). I want to take the inverse transform vector (B’s position relative to A’s local position) and write a script that uses those values to move D around C relative to C’s position and rotation.

I originally thought I could simply get my rotated C’s position in world space and, for instance, add the A/B inverse transform point x value to find out where D’s x position should be at every update. But that is not working. Does anyone have an idea? Please let me know if this is unclear. Many thanks.

2

So, to get this straight: A orbits B. D orbits C. You want D’s relative position around C, to match A’s relative position around B?

So something like this (pseudocode):

Vector3 localA = B.InverseTransformPoint(A);
D.position = C.TransformPoint(localA);
3

Amazing! Thank you!!!