Package org.locationtech.jtstest.testbuilder.topostretch

Class StretchedVertexFinder

java.lang.Object

org.locationtech.jtstest.testbuilder.topostretch.StretchedVertexFinder

class StretchedVertexFinder
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
private static LineSegment	distSeg
private Envelope	limitEnv
private java.util.Collection	linestrings
private java.util.List	nearVerts
private double	tolerance

Constructor Summary

Constructors

Constructor	Description
StretchedVertexFinder(java.util.Collection linestrings, double tolerance)
StretchedVertexFinder(java.util.Collection linestrings, double tolerance, Envelope limitEnv)

Method Summary

Modifier and Type	Method	Description
private static boolean	contains(Envelope env, Coordinate p0, Coordinate p1)
private static double	distanceToSeg(Coordinate p, Coordinate p0, Coordinate p1)
static java.util.List	findNear(java.util.Collection linestrings, double tolerance, Envelope mask)
private void	findNearVertex(Coordinate[] linePts, int index)
private void	findNearVertex(Coordinate[] targetPts, int index, LineString testLine)	Finds a single near vertex.
private void	findNearVertices()
private void	findNearVertices(LineString targetLine)
private static int	geomPointsLen(Coordinate[] pts)
java.util.List	getNearVertices()
private static boolean	isPointNearButNotOnSeg(Coordinate p, Coordinate p0, Coordinate p1, double distTol)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

linestrings

private java.util.Collection linestrings

tolerance

private double tolerance

limitEnv

private Envelope limitEnv

nearVerts

private java.util.List nearVerts

distSeg

private static LineSegment distSeg

Constructor Detail

StretchedVertexFinder

public StretchedVertexFinder(java.util.Collection linestrings,
                             double tolerance)

StretchedVertexFinder

public StretchedVertexFinder(java.util.Collection linestrings,
                             double tolerance,
                             Envelope limitEnv)

Method Detail

findNear

public static java.util.List findNear(java.util.Collection linestrings,
                                      double tolerance,
                                      Envelope mask)

getNearVertices

public java.util.List getNearVertices()

findNearVertices

private void findNearVertices()

geomPointsLen

private static int geomPointsLen(Coordinate[] pts)

findNearVertices

private void findNearVertices(LineString targetLine)

findNearVertex

private void findNearVertex(Coordinate[] linePts,
                            int index)

findNearVertex

private void findNearVertex(Coordinate[] targetPts,
                            int index,
                            LineString testLine)

Finds a single near vertex. This is simply the first one found, not necessarily the nearest. This choice may sub-optimal, resulting in odd result geometry. It's not clear that this can be done better, however. If there are several near points, the stretched geometry is likely to be distorted anyway.

Parameters:

targetPts -

index -

testLine -

contains

private static boolean contains(Envelope env,
                                Coordinate p0,
                                Coordinate p1)

isPointNearButNotOnSeg

private static boolean isPointNearButNotOnSeg(Coordinate p,
                                              Coordinate p0,
                                              Coordinate p1,
                                              double distTol)

distanceToSeg

private static double distanceToSeg(Coordinate p,
                                    Coordinate p0,
                                    Coordinate p1)