Справка Houdini на русском Nodes VOP nodes

In Group VOP node

Returns 1 if the point or primitive is in the group specified by the string.

This operator returns 1 if the specified point or primitive number is in the group specified by the string. It returns 0 if the group does not exist or the element is not contained in the group.

Geometry File

The file on disk to fetch the geometry from.

Group

The name of the point or primitive group.

Class

Specifies whether the group is a point or primitive group.

Point or Primitive

When the class is point, this will be the point number to test group membership for. If the class is primitive, it is the primitive number.

VOP nodes