How to mirror image in MATLAB.

I really need help with the task below, can someone give a hint, just how to start solving this problem?

Write a program that makes the following:

Given the plane Ax + By + Cz = D and a point x in space, calculate the mirror image s of x in the plane.

Function script: function s = mirror(x, A, B, C, D)

Input: The point x and the parameters of the plane equation.

Output: The mirror image s

Also, presenting all occuring vectors as column vectors.

At last, test the functions on a suitable planes and points, just to check the results.

Here is my attempt so far;

function s = spegel(x, A, B, C, D)
s = A.*x + B.*y + C.*z - D;

s = x(length(gen):-1:1) % for the general case of a 1D vector (either row or column)

end

I would be very thankful for some help.

Regards

Cillian

[HARSH]

Can You explain the plane mirror code in matlab ?

Answer 1

[Sean de Wolski]

That looks right for the 1d case. You may wish to look at: fliplr, flipud, flipdim.

If you open them up, e.g:

open flipud

You can see how they work.