The map allows you to replace the map on the surface depending on the type of incoming ray.
Choice Strategy
Selects how to determine the event type.
- Use first event. The type of the event is determined at the first collision and does not change afterwards.
- Use actual event. The event type depends on the current collision.
- Use single event or default. The map will be selected if the ray has not changed its type, otherwise the Default map will be selected.
For example, after the first reflection, Reflection will be selected. After the second reflection event, the Reflection will be select again. And if the second collision is a refraction, Default will be selected.
Default
The map is chosen for an event type that does not fit any strategy.
