(MATLAB) I need a code to generate a 3D rectangular waveguide (rectangular prism essentially) as per below. Thanks :)

1. Draw a waveguide Write a function waveguideGeometry0 in MATLAB that draws the geometry of a rectangular metallic waveguide of transverse dimensions a and b. The input arguments of the function are a and b, as well as the length of the structure to be shown, c. All dimensions are entered in centimeters. If the user specifies only two arguments, the functiorn returns a 2-D plot [cross section of the waveguide, of dimensions (a, b), or any of the two longitudinal sections, of dimensions (b, c) and (a, c), respectivelyl; otherwise it returns a 3-D plot. 1. Draw a waveguide Write a function waveguideGeometry0 in MATLAB that draws the geometry of a rectangular metallic waveguide of transverse dimensions a and b. The input arguments of the function are a and b, as well as the length of the structure to be shown, c. All dimensions are entered in centimeters. If the user specifies only two arguments, the functiorn returns a 2-D plot [cross section of the waveguide, of dimensions (a, b), or any of the two longitudinal sections, of dimensions (b, c) and (a, c), respectivelyl; otherwise it returns a 3-D plot