|
•
|
The Disappear condition annihilates the ray completely. After the ray disappears, its position and other degrees of freedom evaluate to not-a-number (NaN) at any later solution time.
|
|
•
|
The Freeze condition retains the ray position and direction after the ray hits the boundary, although these quantities no longer change over time.
|
|
•
|
The Stick condition retains the ray position, but all other degrees of freedom are set to zero.
|