Sets

• any
• seq
• perm

Any: any

any is effectively an OR of a list of src fields or patterns listed:

• any[Mat(0), Mat("water"), MatSurf("water_interface")]
• any[pattern_id_0, MCRT | Material | X | SrcId(0)]

Sequence: seq

seq is the set constructor of a sequence, describing a series of pattern that must match in order. Each of the patterns might be predicated by a negative or repetition operator.

Example:

seq[
    Emission | X | Light(0),
    * X,
    target_pattern,
    * X,
    Detection | X | Detector(0),
]

Permutation: perm

![WARN] This functionality is not covered yet, but it should provide the possibility to be consumed only within a sequence, such that some events can be described out-of-order.