Description Retrieves the polarization state for a specified ray in the ray buffer. Depending on the number of rays traced, it may be necessary to dimension ray index and ray counter variables as data type Huge_ instead of Long. Please see Multi-threaded Raytracing for more information.
Syntax GetPolarization id, polar
Parameters id As Long (or Huge_) Ray identifier.
polar As T_POLARIZE Structure containing the polarization data for the specified ray.
Remarks This subroutine retrieves the polarization state for a specific ray in the ray buffer and stores that data in the parameter polar. If there is a problem, an error is posted and the subroutine returns without modifying polar.
The information returned by this subroutine is in a more conventional form than the information returned by GetPolarization2.
In general, the polarized field is defined as
E = Sqrt(rayflux) × (ap p + as s + ad d) × Exp[i(2p/l)×OPL]
where d is the ray direction and s x p = d,
ap = pAmpReal + i pAmpImag, as = sAmpReal + i sAmpImag, s || p and ad = 0 except in birefringent media.
See Also Examples
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