Enum tg_sys::tg_index

#[repr(C)]
pub enum tg_index {
    TG_DEFAULT = 0,
    TG_NONE = 1,
    TG_NATURAL = 2,
    TG_YSTRIPES = 3,
}

Geometry indexing options.

Used for polygons, rings, and lines to make the point-in-polygon and geometry intersection operations fast.

An index can also be used for efficiently traversing, searching, and performing nearest-neighbor (kNN) queries on the segment using tg_ring_index_*() and tg_ring_nearest() functions.

Variants

TG_DEFAULT = 0

< default is TG_NATURAL or tg_env_set_default_index().

TG_NONE = 1

< no indexing available, or disabled.

TG_NATURAL = 2

< indexing with natural ring order, for rings/lines

TG_YSTRIPES = 3

< indexing using segment striping, rings only