org.opentripplanner.common.geometry

Class GeometryUtils

java.lang.Object

org.opentripplanner.common.geometry.GeometryUtils

public class GeometryUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static org.opengis.referencing.crs.CoordinateReferenceSystem	WGS84_XY A shared copy of the WGS84 CRS with longitude-first axis order.

Constructor Summary

Constructors

Constructor and Description
GeometryUtils()

Method Summary

Modifier and Type	Method and Description
static com.vividsolutions.jts.geom.Geometry	convertGeoJsonToJtsGeometry(org.geojson.GeoJsonObject geoJsonGeom) Convert a org.geojson.Xxxx geometry to a JTS geometry.
static com.vividsolutions.jts.geom.GeometryFactory	getGeometryFactory()
static com.vividsolutions.jts.geom.LineString	getInteriorSegment(com.vividsolutions.jts.geom.Geometry geomerty, com.vividsolutions.jts.geom.Coordinate first, com.vividsolutions.jts.geom.Coordinate second) Returns the chunk of the given geometry between the two given coordinates.
static com.vividsolutions.jts.geom.LineString	makeLineString(double... coords)
static double	segmentFraction(double x0, double y0, double x1, double y1, double xp, double yp, double xscale) Adapted from com.vividsolutions.jts.geom.LineSegment Combines segmentFraction and projectionFactor methods.
static P2<com.vividsolutions.jts.geom.LineString>	splitGeometryAtFraction(com.vividsolutions.jts.geom.Geometry geometry, double fraction) Splits the input geometry into two LineStrings at a fraction of the distance covered.
static P2<com.vividsolutions.jts.geom.LineString>	splitGeometryAtPoint(com.vividsolutions.jts.geom.Geometry geometry, com.vividsolutions.jts.geom.Coordinate nearestPoint) Splits the input geometry into two LineStrings at the given point.

Methods inherited from class java.lang.Object

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

Field Detail

WGS84_XY

public static final org.opengis.referencing.crs.CoordinateReferenceSystem WGS84_XY

A shared copy of the WGS84 CRS with longitude-first axis order.

Constructor Detail

GeometryUtils

public GeometryUtils()

Method Detail

makeLineString

public static com.vividsolutions.jts.geom.LineString makeLineString(double... coords)

getGeometryFactory

public static com.vividsolutions.jts.geom.GeometryFactory getGeometryFactory()

splitGeometryAtPoint

public static P2<com.vividsolutions.jts.geom.LineString> splitGeometryAtPoint(com.vividsolutions.jts.geom.Geometry geometry,
                                                                              com.vividsolutions.jts.geom.Coordinate nearestPoint)

Splits the input geometry into two LineStrings at the given point.

splitGeometryAtFraction

public static P2<com.vividsolutions.jts.geom.LineString> splitGeometryAtFraction(com.vividsolutions.jts.geom.Geometry geometry,
                                                                                 double fraction)

Splits the input geometry into two LineStrings at a fraction of the distance covered.

getInteriorSegment

public static com.vividsolutions.jts.geom.LineString getInteriorSegment(com.vividsolutions.jts.geom.Geometry geomerty,
                                                                        com.vividsolutions.jts.geom.Coordinate first,
                                                                        com.vividsolutions.jts.geom.Coordinate second)

Returns the chunk of the given geometry between the two given coordinates. Assumes that "second" is after "first" along the input geometry.

segmentFraction

public static double segmentFraction(double x0,
                                     double y0,
                                     double x1,
                                     double y1,
                                     double xp,
                                     double yp,
                                     double xscale)

Adapted from com.vividsolutions.jts.geom.LineSegment Combines segmentFraction and projectionFactor methods.

convertGeoJsonToJtsGeometry

public static com.vividsolutions.jts.geom.Geometry convertGeoJsonToJtsGeometry(org.geojson.GeoJsonObject geoJsonGeom)
                                                                        throws UnsupportedGeometryException

Convert a org.geojson.Xxxx geometry to a JTS geometry. Only support Point, Polygon, MultiPolygon, LineString and MultiLineString for now.

Parameters:

geoJsonGeom -

Returns:

The equivalent JTS geometry.

Throws:

UnsupportedGeometryException