Algorithm for point within Spheroid

[EagleKeeper]

I have a situation wheere there are two points in x/y/z coordinates.

Given axis with 3 different radii, I need to determine if the second point falls within the sphere of influnce of the first point.

Presently I am cheating by generating an approximate box, however, I would like to clip the corners and shave down the edges.

Key word is simple.

 

[rainypickles]

maybe i dont understand, but can you just find the distance between A and B, and if d < radii, then it is in the sphere of influence?

 

[EagleKeeper]

Originally posted by: rainypickles
maybe i dont understand, but can you just find the distance between A and B, and if d < radii, then it is in the sphere of influence?

A pure sphere has only one radius.

What I am trying to do is create a physical object similar to a squished football.

I know the center of the object in order to create the football. via the maximum length, width and hieght.

Now I have to via an algorithm find out if the target point is inside the squshed football.