Method to provide the angle relative to a tissue boundary.

Method that provides the distance to the closest tissue boundary.

Method that gives the region the photon is about to enter.

Method to return updated PhotonStateType enum indicating type of photon exit from domain (e.g. reflectance boundary, transmittance boundary)

Method to provide reflected direction of photon given current position and direction.

Method to provide refracted direction of photon.

Method that gives the current region index within Regions list (above) at the current position of the photon.

Method to determine whether on tissue domain boundary. This method helps to determine when photon leaves the phase space and enters the air for example.

AbsorptionWeightingType enum specifier indicating Analog, Discrete Absorption weighting, etc.

PhaseFunctionType enum specifier indicating Henyey-Greenstein, Birdirectional, etc.

A list of ITissueRegions that describes the entire system.

The scattering lengths for each tissue region. For discrete absorption weighting and analog, this is based on 1/mut, for continuous it is based on 1/mus.

photon weight threshold, below which turns on Russian Roulette