GEOS
3.6.2
|
#include <Node.h>
Public Member Functions | |
Node (const geom::Coordinate &newCoord, EdgeEndStar *newEdges) | |
virtual const geom::Coordinate & | getCoordinate () const |
virtual EdgeEndStar * | getEdges () |
virtual bool | isIsolated () const |
virtual void | add (EdgeEnd *e) |
Add the edge to the list of edges at this node. | |
virtual void | mergeLabel (const Node &n) |
virtual void | mergeLabel (const Label &label2) |
To merge labels for two nodes, the merged location for each LabelElement is computed. | |
virtual void | setLabel (int argIndex, int onLocation) |
virtual void | setLabelBoundary (int argIndex) |
Updates the label of a node to BOUNDARY, obeying the mod-2 boundaryDetermination rule. | |
virtual int | computeMergedLocation (const Label &label2, int eltIndex) |
virtual std::string | print () |
virtual const std::vector < double > & | getZ () const |
virtual void | addZ (double) |
virtual bool | isIncidentEdgeInResult () const |
Tests whether any incident edge is flagged as being in the result. | |
Protected Member Functions | |
void | testInvariant () const |
virtual void | computeIM (geom::IntersectionMatrix &) |
Basic nodes do not compute IMs. | |
Protected Attributes | |
geom::Coordinate | coord |
EdgeEndStar * | edges |
Friends | |
std::ostream & | operator<< (std::ostream &os, const Node &node) |
The node component of a geometry graph
virtual int geos::geomgraph::Node::computeMergedLocation | ( | const Label & | label2, |
int | eltIndex | ||
) | [virtual] |
The location for a given eltIndex for a node will be one of { null, INTERIOR, BOUNDARY }. A node may be on both the boundary and the interior of a geometry; in this case, the rule is that the node is considered to be in the boundary. The merged location is the maximum of the two input values.
virtual bool geos::geomgraph::Node::isIncidentEdgeInResult | ( | ) | const [virtual] |
Tests whether any incident edge is flagged as being in the result.
This test can be used to determine if the node is in the result, since if any incident edge is in the result, the node must be in the result as well.
true
if any indicident edge in the in the result virtual void geos::geomgraph::Node::mergeLabel | ( | const Label & | label2 | ) | [virtual] |
To merge labels for two nodes, the merged location for each LabelElement is computed.
The location for the corresponding node LabelElement is set to the result, as long as the location is non-null.