GEOS: geos::operation::polygonize::PolygonizeDirectedEdge Class Reference

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geos::operation::polygonize::PolygonizeDirectedEdge Class Reference

A DirectedEdge of a PolygonizeGraph, which represents an edge of a polygon formed by the graph. More...

`#include <PolygonizeDirectedEdge.h>`

Inheritance diagram for geos::operation::polygonize::PolygonizeDirectedEdge:

## Public Member Functions
| PolygonizeDirectedEdge (planargraph::Node *newFrom, planargraph::Node *newTo, const geom::Coordinate &newDirectionPt, bool nEdgeDirection)
long | getLabel () const
void | setLabel (long newLabel)
PolygonizeDirectedEdge * | getNext () const
void | setNext (PolygonizeDirectedEdge *newNext)
bool | isInRing () const
void | setRing (EdgeRing *newEdgeRing)
Public Member Functions inherited from geos::planargraph::DirectedEdge
| DirectedEdge (Node *newFrom, Node *newTo, const geom::Coordinate &directionPt, bool newEdgeDirection)
| Constructs a DirectedEdge connecting the `from` node to the `to` node.
Edge * | getEdge () const
| Returns this DirectedEdge's parent Edge, or null if it has none.
void | setEdge (Edge *newParentEdge)
| Associates this DirectedEdge with an Edge (possibly null, indicating no associated Edge).
int | getQuadrant () const
| Returns 0, 1, 2, or 3, indicating the quadrant in which this DirectedEdge's orientation lies.
const geom::Coordinate & | getDirectionPt () const
| Returns a point to which an imaginary line is drawn from the from-node to specify this DirectedEdge's orientation.
bool | getEdgeDirection () const
| Returns whether the direction of the parent Edge (if any) is the same as that of this Directed Edge.
Node * | getFromNode () const
| Returns the node from which this DirectedEdge leaves.
Node * | getToNode () const
| Returns the node to which this DirectedEdge goes.
geom::Coordinate & | getCoordinate () const
| Returns the coordinate of the from-node.
double | getAngle () const
| Returns the angle that the start of this DirectedEdge makes with the positive x-axis, in radians.
DirectedEdge * | getSym () const
| Returns the symmetric DirectedEdge – the other DirectedEdge associated with this DirectedEdge's parent Edge.
void | setSym (DirectedEdge *newSym)
| Sets this DirectedEdge's symmetric DirectedEdge, which runs in the opposite direction.
int | compareTo (const DirectedEdge *obj) const
| Returns 1 if this DirectedEdge has a greater angle with the positive x-axis than b", 0 if the DirectedEdges are collinear, and -1 otherwise.
int | compareDirection (const DirectedEdge *e) const
| Returns 1 if this DirectedEdge has a greater angle with the positive x-axis than b", 0 if the DirectedEdges are collinear, and -1 otherwise.
std::string | print () const
| Prints a detailed string representation of this DirectedEdge to the given PrintStream.
Public Member Functions inherited from geos::planargraph::GraphComponent
virtual bool | isVisited () const
| Tests if a component has been visited during the course of a graph algorithm.
virtual void | setVisited (bool isVisited)
| Sets the visited flag for this component.
virtual bool | isMarked () const
| Tests if a component has been marked at some point during the processing involving this graph.
virtual void | setMarked (bool isMarked)
| Sets the marked flag for this component.

## Additional Inherited Members
Public Types inherited from geos::planargraph::DirectedEdge
typedef std::list< DirectedEdge * > | NonConstList
typedef std::list< const DirectedEdge * > | ConstList
typedef std::vector < DirectedEdge * > | NonConstVect
typedef std::vector< const DirectedEdge * > | ConstVect
typedef std::vector < DirectedEdge * > | Vect
Static Public Member Functions inherited from geos::planargraph::DirectedEdge
static std::vector< Edge * > * | toEdges (std::vector< DirectedEdge * > &dirEdges)
| Returns a List containing the parent Edge (possibly null) for each of the given DirectedEdges.
static void | toEdges (std::vector< DirectedEdge * > &dirEdges, std::vector< Edge * > &parentEdges)
| Add parent Edge (possibly null) of each of the given DirectedEdges to the given parentEdges vector.
Protected Attributes inherited from geos::planargraph::DirectedEdge
Edge * | parentEdge
Node * | from
Node * | to
geom::Coordinate | p0
geom::Coordinate | p1
DirectedEdge * | sym
bool | edgeDirection
int | quadrant
double | angle

## Detailed Description

A DirectedEdge of a PolygonizeGraph, which represents an edge of a polygon formed by the graph.

May be logically deleted from the graph by setting the `marked` flag.

The documentation for this class was generated from the following file:

- PolygonizeDirectedEdge.h