Package org.locationtech.jts.geomgraph
Class DirectedEdge
- java.lang.Object
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- org.locationtech.jts.geomgraph.EdgeEnd
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- org.locationtech.jts.geomgraph.DirectedEdge
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- All Implemented Interfaces:
java.lang.Comparable
public class DirectedEdge extends EdgeEnd
- Version:
- 1.7
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Constructor Summary
Constructors Constructor Description DirectedEdge(Edge edge, boolean isForward)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static int
depthFactor(int currLocation, int nextLocation)
Computes the factor for the change in depth when moving from one location to another.int
getDepth(int position)
int
getDepthDelta()
Edge
getEdge()
EdgeRing
getEdgeRing()
EdgeRing
getMinEdgeRing()
DirectedEdge
getNext()
DirectedEdge
getNextMin()
DirectedEdge
getSym()
Each Edge gives rise to a pair of symmetric DirectedEdges, in opposite directions.boolean
isForward()
boolean
isInResult()
boolean
isInteriorAreaEdge()
This is an interior Area edge if its label is an Area label for both Geometries and for each Geometry both sides are in the interior.boolean
isLineEdge()
This edge is a line edge if at least one of the labels is a line label any labels which are not line labels have all Locations = EXTERIORboolean
isVisited()
void
print(java.io.PrintStream out)
void
printEdge(java.io.PrintStream out)
void
setDepth(int position, int depthVal)
Set depth for a position.void
setEdgeDepths(int position, int depth)
Set both edge depths.void
setEdgeRing(EdgeRing edgeRing)
void
setInResult(boolean isInResult)
void
setMinEdgeRing(EdgeRing minEdgeRing)
void
setNext(DirectedEdge next)
void
setNextMin(DirectedEdge nextMin)
void
setSym(DirectedEdge de)
void
setVisited(boolean isVisited)
void
setVisitedEdge(boolean isVisited)
Marks both DirectedEdges attached to a given Edge.-
Methods inherited from class org.locationtech.jts.geomgraph.EdgeEnd
compareDirection, compareTo, computeLabel, getCoordinate, getDirectedCoordinate, getDx, getDy, getLabel, getNode, getQuadrant, setNode, toString
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Constructor Detail
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DirectedEdge
public DirectedEdge(Edge edge, boolean isForward)
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Method Detail
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depthFactor
public static int depthFactor(int currLocation, int nextLocation)
Computes the factor for the change in depth when moving from one location to another. E.g. if crossing from theLocation.INTERIOR
to theLocation.EXTERIOR
the depth decreases, so the factor is -1.- Parameters:
currLocation
- Current locationnextLocation
- Next location- Returns:
- change of depth moving from currLocation to nextLocation
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setInResult
public void setInResult(boolean isInResult)
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isInResult
public boolean isInResult()
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isVisited
public boolean isVisited()
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setVisited
public void setVisited(boolean isVisited)
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setEdgeRing
public void setEdgeRing(EdgeRing edgeRing)
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getEdgeRing
public EdgeRing getEdgeRing()
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setMinEdgeRing
public void setMinEdgeRing(EdgeRing minEdgeRing)
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getMinEdgeRing
public EdgeRing getMinEdgeRing()
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getDepth
public int getDepth(int position)
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setDepth
public void setDepth(int position, int depthVal)
Set depth for a position. You may also usesetEdgeDepths(int, int)
to update depth and opposite depth together.- Parameters:
position
- Position to updatedepthVal
- Depth at the provided position
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getDepthDelta
public int getDepthDelta()
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setVisitedEdge
public void setVisitedEdge(boolean isVisited)
Marks both DirectedEdges attached to a given Edge. This is used for edges corresponding to lines, which will only appear oriented in a single direction in the result.- Parameters:
isVisited
- True to mark edge as visited
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getSym
public DirectedEdge getSym()
Each Edge gives rise to a pair of symmetric DirectedEdges, in opposite directions.- Returns:
- the DirectedEdge for the same Edge but in the opposite direction
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isForward
public boolean isForward()
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setSym
public void setSym(DirectedEdge de)
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getNext
public DirectedEdge getNext()
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setNext
public void setNext(DirectedEdge next)
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getNextMin
public DirectedEdge getNextMin()
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setNextMin
public void setNextMin(DirectedEdge nextMin)
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isLineEdge
public boolean isLineEdge()
This edge is a line edge if- at least one of the labels is a line label
- any labels which are not line labels have all Locations = EXTERIOR
- Returns:
- If edge is a line edge
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isInteriorAreaEdge
public boolean isInteriorAreaEdge()
This is an interior Area edge if- its label is an Area label for both Geometries
- and for each Geometry both sides are in the interior.
- Returns:
- true if this is an interior Area edge
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setEdgeDepths
public void setEdgeDepths(int position, int depth)
Set both edge depths. One depth for a given side is provided. The other is computed depending on the Location transition and the depthDelta of the edge.- Parameters:
position
- Position to updatedepth
- Depth at the provided position
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printEdge
public void printEdge(java.io.PrintStream out)
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