Thread Subject:

Intersection between a sphere and line in the 3d

Dear all,
I have a problem.
I have created a sphere in the 3d and I want to make intersection between a line and the sphere...and I want to determine the point (x,y,z) of the intersection
thanks in advance,
M

"mhm Mousa" <mhm_22_5_1985@yahoo.com> wrote in message <h5rb0j$8cf$1@fred.mathworks.com>...
> Dear all,
> I have a problem.
> I have created a sphere in the 3d and I want to make intersection between a line and the sphere...and I want to determine the point (x,y,z) of the intersection
> thanks in advance,
> M

what have you come up with so far...
in particular, CSSMers are very interested in seeing your ML code - because this is what this NG is all about...

us

"mhm Mousa" <mhm_22_5_1985@yahoo.com> wrote in message <h5rb0j$8cf$1@fred.mathworks.com>...
> Dear all,
> I have a problem.
> I have created a sphere in the 3d and I want to make intersection between a line and the sphere...and I want to determine the point (x,y,z) of the intersection
> thanks in advance,
> M

A Hint: It takes one equation to define a sphere and two equations to specify a straight line. That gives you three equations in three unknown 3D coordinates to solve.

Roger Stafford