GEOS
3.6.1
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A TopologyLocation is the labelling of a GraphComponent's topological relationship to a single Geometry. More...
#include <TopologyLocation.h>
Public Member Functions | |
TopologyLocation (const std::vector< int > &newLocation) | |
TopologyLocation (int on, int left, int right) | |
Constructs a TopologyLocation specifying how points on, to the left of, and to the right of some GraphComponent relate to some Geometry. More... | |
TopologyLocation (int on) | |
TopologyLocation (const TopologyLocation &gl) | |
TopologyLocation & | operator= (const TopologyLocation &gl) |
int | get (std::size_t posIndex) const |
bool | isNull () const |
bool | isAnyNull () const |
bool | isEqualOnSide (const TopologyLocation &le, int locIndex) const |
bool | isArea () const |
bool | isLine () const |
void | flip () |
void | setAllLocations (int locValue) |
void | setAllLocationsIfNull (int locValue) |
void | setLocation (std::size_t locIndex, int locValue) |
void | setLocation (int locValue) |
const std::vector< int > & | getLocations () const |
Warning: returns reference to owned memory. | |
void | setLocations (int on, int left, int right) |
bool | allPositionsEqual (int loc) const |
void | merge (const TopologyLocation &gl) |
merge updates only the UNDEF attributes of this object with the attributes of another. | |
std::string | toString () const |
Friends | |
std::ostream & | operator<< (std::ostream &, const TopologyLocation &) |
A TopologyLocation is the labelling of a GraphComponent's topological relationship to a single Geometry.
If the parent component is an area edge, each side and the edge itself have a topological location. These locations are named
If the parent component is a line edge or node, there is a single topological relationship attribute, ON.
The possible values of a topological location are {Location::UNDEF, Location::EXTERIOR, Location::BOUNDARY, Location::INTERIOR}
The labelling is stored in an array location[j] where where j has the values ON, LEFT, RIGHT
geos::geomgraph::TopologyLocation::TopologyLocation | ( | int | on, |
int | left, | ||
int | right | ||
) |
Constructs a TopologyLocation specifying how points on, to the left of, and to the right of some GraphComponent relate to some Geometry.
Possible values for the parameters are Location::UNDEF, Location::EXTERIOR, Location::BOUNDARY, and Location::INTERIOR.
bool geos::geomgraph::TopologyLocation::isAnyNull | ( | ) | const |
bool geos::geomgraph::TopologyLocation::isNull | ( | ) | const |