Ray Lines
- Last UpdatedDec 22, 2025
- 1 minute read
A ray line in this context is a STRA element whose FPT is user defined, and whose TPT lies on the SHEE boundary. Starting with a STRA as the current element, a ray line is created using the RAYLINE command to define a From point (which may be any of the position options, see Introduction) and an angle. For example:

Figure 20:19. Ray Lines
Note: If the current SHEE size is changed, the TPT of the STRA will not be updated.