Package org.openjump.core.geomutils

Class GeoUtils

java.lang.Object

org.openjump.core.geomutils.GeoUtils

public class GeoUtils
extends Object

Author:

Larry

Field Summary

Fields

Modifier and Type	Field	Description
static int	emptyBit
static int	lineBit
static int	pointBit
static int	polyBit

Constructor Summary

Constructors

Constructor	Description
GeoUtils()

Method Summary

Modifier and Type	Method	Description
static org.locationtech.jts.geom.Coordinate	along(double d, org.locationtech.jts.geom.Coordinate q, org.locationtech.jts.geom.Coordinate r)
static boolean	clockwise(org.locationtech.jts.geom.Geometry geo)
static org.locationtech.jts.geom.CoordinateList	ConvexHullWrap(org.locationtech.jts.geom.CoordinateList coords)
static org.locationtech.jts.geom.Geometry	createPlume(org.locationtech.jts.geom.Coordinate[] coords, double radius1, double radius2)	Generate a plume Polygon using Coordinate[] bounded on each end by circles of radius1 and radius2.
static double	distance(org.locationtech.jts.geom.Coordinate p1, org.locationtech.jts.geom.Coordinate p2)
static double	dot(org.locationtech.jts.geom.Coordinate p, org.locationtech.jts.geom.Coordinate q)
static boolean	geometriesEqual(org.locationtech.jts.geom.Geometry geo1, org.locationtech.jts.geom.Geometry geo2)
static boolean	geometryIsSegmentOf(org.locationtech.jts.geom.Geometry geo1, org.locationtech.jts.geom.Geometry geo2)
static double	getBearing180(org.locationtech.jts.geom.Coordinate startPt, org.locationtech.jts.geom.Coordinate endPt)
static double	getBearing360(org.locationtech.jts.geom.Coordinate startPt, org.locationtech.jts.geom.Coordinate endPt)
static double	getBearingRadians(org.locationtech.jts.geom.Coordinate startPt, org.locationtech.jts.geom.Coordinate endPt)
static org.locationtech.jts.geom.Coordinate	getCenter(org.locationtech.jts.geom.Coordinate p1, org.locationtech.jts.geom.Coordinate p2, org.locationtech.jts.geom.Coordinate p3)
static org.locationtech.jts.geom.Coordinate	getClosestPointOnLine(org.locationtech.jts.geom.Coordinate pt, org.locationtech.jts.geom.Coordinate p0, org.locationtech.jts.geom.Coordinate p1)
static org.locationtech.jts.geom.Coordinate	getClosestPointOnSegment(org.locationtech.jts.geom.Coordinate pt, org.locationtech.jts.geom.Coordinate p0, org.locationtech.jts.geom.Coordinate p1)
static double	getDistance(org.locationtech.jts.geom.Coordinate pt, org.locationtech.jts.geom.Coordinate p0, org.locationtech.jts.geom.Coordinate p1)
static org.locationtech.jts.geom.Coordinate[]	getDistanceAngleArray(org.locationtech.jts.geom.LineString ring)
static org.locationtech.jts.geom.Coordinate[]	getDistanceBearingArray(org.locationtech.jts.geom.LineString ring)
static double	getDistanceFromPointToGeometry(org.locationtech.jts.geom.Coordinate coord, org.locationtech.jts.geom.Geometry geo)
static org.locationtech.jts.geom.Coordinate	getIntersection(org.locationtech.jts.geom.Coordinate p1, org.locationtech.jts.geom.Coordinate p2, org.locationtech.jts.geom.Coordinate p3, org.locationtech.jts.geom.Coordinate p4)
static double	interiorAngle(org.locationtech.jts.geom.Coordinate p1, org.locationtech.jts.geom.Coordinate p2, org.locationtech.jts.geom.Coordinate p3)
static org.locationtech.jts.geom.Coordinate	intersect(org.locationtech.jts.geom.Coordinate P1, org.locationtech.jts.geom.Coordinate P2, org.locationtech.jts.geom.Coordinate P3, org.locationtech.jts.geom.Coordinate P4)
static org.locationtech.jts.geom.Coordinate	intersectSegments(org.locationtech.jts.geom.Coordinate P1, org.locationtech.jts.geom.Coordinate P2, org.locationtech.jts.geom.Coordinate P3, org.locationtech.jts.geom.Coordinate P4)
static double	mag(org.locationtech.jts.geom.Coordinate q)
static org.locationtech.jts.geom.LineString	MakeRoundCorner(org.locationtech.jts.geom.Coordinate A, org.locationtech.jts.geom.Coordinate B, org.locationtech.jts.geom.Coordinate C, org.locationtech.jts.geom.Coordinate D, double r, boolean arcOnly)
static org.locationtech.jts.geom.Coordinate	perpendicularVector(org.locationtech.jts.geom.Coordinate v1, org.locationtech.jts.geom.Coordinate v2, double dist, boolean toLeft)
static boolean	pointToRight(org.locationtech.jts.geom.Coordinate pt, org.locationtech.jts.geom.Coordinate p1, org.locationtech.jts.geom.Coordinate p2)
static org.locationtech.jts.geom.Geometry	reducePoints(org.locationtech.jts.geom.Geometry geo, double tolerance)
static org.locationtech.jts.geom.LinearRing	removeRedundantPoints(org.locationtech.jts.geom.LineString ring)
static org.locationtech.jts.geom.Coordinate	rotPt(org.locationtech.jts.geom.Coordinate inpt, org.locationtech.jts.geom.Coordinate rpt, double theta)
static BitSet	setBit(BitSet bitSet, org.locationtech.jts.geom.Geometry geometry)
static org.locationtech.jts.geom.Polygon	taperedBufferSegment(org.locationtech.jts.geom.Coordinate p0, org.locationtech.jts.geom.Coordinate p1, double d1, double d2)
static double	theta(org.locationtech.jts.geom.Coordinate p1, org.locationtech.jts.geom.Coordinate p2)
static org.locationtech.jts.geom.Coordinate	unitVec(org.locationtech.jts.geom.Coordinate q)
static org.locationtech.jts.geom.Coordinate	vectorAdd(org.locationtech.jts.geom.Coordinate q, org.locationtech.jts.geom.Coordinate r)
static org.locationtech.jts.geom.Coordinate	vectorBetween(org.locationtech.jts.geom.Coordinate q, org.locationtech.jts.geom.Coordinate r)
static org.locationtech.jts.geom.Coordinate	vectorTimesScalar(org.locationtech.jts.geom.Coordinate q, double m)

Methods inherited from class java.lang.Object

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

Field Detail

emptyBit

public static final int emptyBit

See Also:

Constant Field Values

pointBit

public static final int pointBit

See Also:

Constant Field Values

lineBit

public static final int lineBit

See Also:

Constant Field Values

polyBit

public static final int polyBit

See Also:

Constant Field Values

Constructor Detail

GeoUtils

public GeoUtils()

Method Detail

mag

public static double mag(org.locationtech.jts.geom.Coordinate q)

distance

public static double distance(org.locationtech.jts.geom.Coordinate p1,
                              org.locationtech.jts.geom.Coordinate p2)

unitVec

public static org.locationtech.jts.geom.Coordinate unitVec(org.locationtech.jts.geom.Coordinate q)

vectorAdd

public static org.locationtech.jts.geom.Coordinate vectorAdd(org.locationtech.jts.geom.Coordinate q,
                                                             org.locationtech.jts.geom.Coordinate r)

vectorBetween

public static org.locationtech.jts.geom.Coordinate vectorBetween(org.locationtech.jts.geom.Coordinate q,
                                                                 org.locationtech.jts.geom.Coordinate r)

vectorTimesScalar

public static org.locationtech.jts.geom.Coordinate vectorTimesScalar(org.locationtech.jts.geom.Coordinate q,
                                                                     double m)

dot

public static double dot(org.locationtech.jts.geom.Coordinate p,
                         org.locationtech.jts.geom.Coordinate q)

rotPt

public static org.locationtech.jts.geom.Coordinate rotPt(org.locationtech.jts.geom.Coordinate inpt,
                                                         org.locationtech.jts.geom.Coordinate rpt,
                                                         double theta)

pointToRight

public static boolean pointToRight(org.locationtech.jts.geom.Coordinate pt,
                                   org.locationtech.jts.geom.Coordinate p1,
                                   org.locationtech.jts.geom.Coordinate p2)

perpendicularVector

public static org.locationtech.jts.geom.Coordinate perpendicularVector(org.locationtech.jts.geom.Coordinate v1,
                                                                       org.locationtech.jts.geom.Coordinate v2,
                                                                       double dist,
                                                                       boolean toLeft)

getBearing180

public static double getBearing180(org.locationtech.jts.geom.Coordinate startPt,
                                   org.locationtech.jts.geom.Coordinate endPt)

getBearingRadians

public static double getBearingRadians(org.locationtech.jts.geom.Coordinate startPt,
                                       org.locationtech.jts.geom.Coordinate endPt)

getBearing360

public static double getBearing360(org.locationtech.jts.geom.Coordinate startPt,
                                   org.locationtech.jts.geom.Coordinate endPt)

theta

public static double theta(org.locationtech.jts.geom.Coordinate p1,
                           org.locationtech.jts.geom.Coordinate p2)

ConvexHullWrap

public static org.locationtech.jts.geom.CoordinateList ConvexHullWrap(org.locationtech.jts.geom.CoordinateList coords)

getDistance

public static double getDistance(org.locationtech.jts.geom.Coordinate pt,
                                 org.locationtech.jts.geom.Coordinate p0,
                                 org.locationtech.jts.geom.Coordinate p1)

getClosestPointOnSegment

public static org.locationtech.jts.geom.Coordinate getClosestPointOnSegment(org.locationtech.jts.geom.Coordinate pt,
                                                                            org.locationtech.jts.geom.Coordinate p0,
                                                                            org.locationtech.jts.geom.Coordinate p1)

getClosestPointOnLine

public static org.locationtech.jts.geom.Coordinate getClosestPointOnLine(org.locationtech.jts.geom.Coordinate pt,
                                                                         org.locationtech.jts.geom.Coordinate p0,
                                                                         org.locationtech.jts.geom.Coordinate p1)

along

public static org.locationtech.jts.geom.Coordinate along(double d,
                                                         org.locationtech.jts.geom.Coordinate q,
                                                         org.locationtech.jts.geom.Coordinate r)

interiorAngle

public static double interiorAngle(org.locationtech.jts.geom.Coordinate p1,
                                   org.locationtech.jts.geom.Coordinate p2,
                                   org.locationtech.jts.geom.Coordinate p3)

getDistanceBearingArray

public static org.locationtech.jts.geom.Coordinate[] getDistanceBearingArray(org.locationtech.jts.geom.LineString ring)

Parameters:

ring - - LinearRing represented as LineString to analyze

Returns:

- Coordinate[] with first point of passed LineString in [0] followed by [1-length] with x as distance and y as angle. The angle will be the will be the absolute bearing in the range 0-360. The original LineString and Coordinate points are unmodified.

getDistanceAngleArray

public static org.locationtech.jts.geom.Coordinate[] getDistanceAngleArray(org.locationtech.jts.geom.LineString ring)

Parameters:

ring - - LinearRing represented as LineString to analyze

Returns:

- Coordinate[] array of with x as distance and y as interior angles in degrees 0 to +180. The angles at each index in the array are the interior angles at the vertex position in the (closed polygon) ring. Every array position if filled. The distances are the distance at a vertex to the following point. For [n-2] the distance is computed to the [n-1] position assuming the ring is closed.

removeRedundantPoints

public static org.locationtech.jts.geom.LinearRing removeRedundantPoints(org.locationtech.jts.geom.LineString ring)

Parameters:

ring - - a LineString representing a linear ring

Returns:

- an array of Coordinate points with colinear points removed. The original LineString and Coordinate points are unmodified.

reducePoints

public static org.locationtech.jts.geom.Geometry reducePoints(org.locationtech.jts.geom.Geometry geo,
                                                              double tolerance)

clockwise

public static boolean clockwise(org.locationtech.jts.geom.Geometry geo)

intersect

public static org.locationtech.jts.geom.Coordinate intersect(org.locationtech.jts.geom.Coordinate P1,
                                                             org.locationtech.jts.geom.Coordinate P2,
                                                             org.locationtech.jts.geom.Coordinate P3,
                                                             org.locationtech.jts.geom.Coordinate P4)

getIntersection

public static org.locationtech.jts.geom.Coordinate getIntersection(org.locationtech.jts.geom.Coordinate p1,
                                                                   org.locationtech.jts.geom.Coordinate p2,
                                                                   org.locationtech.jts.geom.Coordinate p3,
                                                                   org.locationtech.jts.geom.Coordinate p4)

intersectSegments

public static org.locationtech.jts.geom.Coordinate intersectSegments(org.locationtech.jts.geom.Coordinate P1,
                                                                     org.locationtech.jts.geom.Coordinate P2,
                                                                     org.locationtech.jts.geom.Coordinate P3,
                                                                     org.locationtech.jts.geom.Coordinate P4)

getCenter

public static org.locationtech.jts.geom.Coordinate getCenter(org.locationtech.jts.geom.Coordinate p1,
                                                             org.locationtech.jts.geom.Coordinate p2,
                                                             org.locationtech.jts.geom.Coordinate p3)

setBit

public static BitSet setBit(BitSet bitSet,
                            org.locationtech.jts.geom.Geometry geometry)

MakeRoundCorner

public static org.locationtech.jts.geom.LineString MakeRoundCorner(org.locationtech.jts.geom.Coordinate A,
                                                                   org.locationtech.jts.geom.Coordinate B,
                                                                   org.locationtech.jts.geom.Coordinate C,
                                                                   org.locationtech.jts.geom.Coordinate D,
                                                                   double r,
                                                                   boolean arcOnly)

geometriesEqual

public static boolean geometriesEqual(org.locationtech.jts.geom.Geometry geo1,
                                      org.locationtech.jts.geom.Geometry geo2)

getDistanceFromPointToGeometry

public static double getDistanceFromPointToGeometry(org.locationtech.jts.geom.Coordinate coord,
                                                    org.locationtech.jts.geom.Geometry geo)

geometryIsSegmentOf

public static boolean geometryIsSegmentOf(org.locationtech.jts.geom.Geometry geo1,
                                          org.locationtech.jts.geom.Geometry geo2)

createPlume

public static org.locationtech.jts.geom.Geometry createPlume(org.locationtech.jts.geom.Coordinate[] coords,
                                                             double radius1,
                                                             double radius2)

Generate a plume Polygon using Coordinate[] bounded on each end by circles of radius1 and radius2.

Parameters:

coords - - Coordinate[] sequence of points derived from a LineString.

radius1 - - the radius around the first point in coords.

radius2 - - the radius around the last point in coords.

Returns:

Geometry containing Polygon of plume.

taperedBufferSegment

public static org.locationtech.jts.geom.Polygon taperedBufferSegment(org.locationtech.jts.geom.Coordinate p0,
                                                                     org.locationtech.jts.geom.Coordinate p1,
                                                                     double d1,
                                                                     double d2)