Analysis

TABLE 6.4. Incident Ray Table Columns: These columns are available when the table is saved to a format outside of TracePro for post-processing.

Ray Number	The row in the table
Start Number	For example, start Number 3 is the third ray started in the ray-
	trace.
Split Number	The ray starts with split number 1 (at the source or grid) and the
	first ray-surface intersection is split number 2, etc.
Type	This refers to the type of the ray node, e.g. SpecRefl for specu-
	lar reflection.
Hist	This is often blank. It refers to any special type of the previous
	node, e.g. TIR for total internal reflection. Thus a totally inter-
	nally reflected ray on the previous node would result in
	Type=SpecRefl and Hist=TIR.
Inc Flux	Flux of the ray incident on the surface in Watts or Lumens.
Abso Flux	The portion of the incident flux of the ray that was absorbed by
	the surface in Watts or Lumens.
X Pos., Y Pos.,	The global coordinates where the ray struck the surface.
Z Pos.
X Vec., Y Vec.,	The global direction cosines of the incident ray.
Z Vec.
X Norm, Y Norm,	The normal to the surface at the position where the ray struck
Z Norm	the surface.
S0, S1, S2, S3	The Stokes vector of the incident ray (polarization only).
DegOfPol	The degree of polarization of the incident ray (polarization only)
Ellipse Ratio	Ratio between the two axes of the polarization ellipse
Xvec MajAxis,	X, Y, and Z coordinates of a vector pointing in the direction of
Yvec MajAxis, Zvec	the major axis of the polarization ellipse.
MajAxis

Saving the Incident Ray Table as a Source File

A Source File can be created from an Incident Ray Table in TracePro. With the Incident Ray Table as the active window, select File|Save As, choose the file format as *.txt, and check the box for “Export to Source File format. For more information on Source Files and their applications, see the section titled >“File Sources” on page 5.22.

Display Selected Rays

The menu command Analysis|Display Selected Rays causes TracePro to turn off the regular ray display and draw the rays selected by row in the Incident Rays Table. One or more rows can be selected using the mouse with the <Shift> or <Ctrl> key. To select a set of continuous rows, click in the first row and then, with the <Shift> key pressed, click in the last row. You can select individual rows (discontinuous items) by clicking in each row with the <Ctrl> key pressed. An example is shown in Figure 6.29 and Figure 6.30.

6.42	TracePro 5.0 User’s Manual