primgroupmask
expression function
Returns the list of groups matching a pattern in a surface node.
See also: hasprim, primlist, primgrouplist
Usage
primgroupmask(surface_node, pattern)
The returned string is a space separated list of group names.
To simply get a list of all primitive groups (no pattern), use primgrouplist.
Examples
primgroupmask("/obj/model", "group*")
Returns the names of all primitive groups in the specified surface node which start with “group”. So this may be something like “group1 group2 group_leftleg”.