org.geolatte.geom

Class DefaultMeasureGeometryOperations

java.lang.Object

org.geolatte.geom.DefaultMeasureGeometryOperations

All Implemented Interfaces:

MeasureGeometryOperations

public class DefaultMeasureGeometryOperations
extends Object
implements MeasureGeometryOperations

Default implementation of MeasureGeometryOperations.

This implementation conforms to the SQL/MM and SFA 1.2.1 specifications. See Simple Feature Access - Part 1: common architecture, sec. 6.1.2.6

Author:

Karel Maesen, Geovise BVBA creation-date: 4/4/12

Constructor Summary

Constructors

Constructor and Description
DefaultMeasureGeometryOperations()

Method Summary

Modifier and Type	Method and Description
GeometryOperation<Double>	createGetMeasureOp(Geometry geometry, Point point) Creates a GeometryOperation to calculate the measure value at the specified point
GeometryOperation<Double>	createGetMeasureOp(Geometry geometry, Point point, double tolerance) Creates a GeometryOperation to calculate the measure value, given that the points fall within a specified distance from the linestring at the specified point
GeometryOperation<Geometry>	createMeasureOnLengthOp(Geometry geometry, boolean keepBeginMeasure) Creates a GeometryOperation that creates a new Geometry that has the same 2D/3D-coordinates as the specified Geometry, and with measure values that correspond with the length along it (or begin-measure + length).

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultMeasureGeometryOperations

public DefaultMeasureGeometryOperations()

Method Detail

createGetMeasureOp

public GeometryOperation<Double> createGetMeasureOp(Geometry geometry,
                                                    Point point,
                                                    double tolerance)

Description copied from interface: MeasureGeometryOperations

Creates a GeometryOperation to calculate the measure value, given that the points fall within a specified distance from the linestring at the specified point

Specified by:

createGetMeasureOp in interface MeasureGeometryOperations

Parameters:

geometry - a measured Geometry

point - a Point on the geometry

tolerance - the maximum allowed distance between geometry and point

Returns:

a GeometryOperation that returns the measure value at the specified point on the specified geometry

createGetMeasureOp

public GeometryOperation<Double> createGetMeasureOp(Geometry geometry,
                                                    Point point)

Description copied from interface: MeasureGeometryOperations

Creates a GeometryOperation to calculate the measure value at the specified point

Specified by:

createGetMeasureOp in interface MeasureGeometryOperations

Parameters:

geometry - a measured Geometry

point - a Point on the geometry

Returns:

a GeometryOperation that returns the measure value at the specified point on the specified geometry

createMeasureOnLengthOp

public GeometryOperation<Geometry> createMeasureOnLengthOp(Geometry geometry,
                                                           boolean keepBeginMeasure)

Description copied from interface: MeasureGeometryOperations

Creates a GeometryOperation that creates a new Geometry that has the same 2D/3D-coordinates as the specified Geometry, and with measure values that correspond with the length along it (or begin-measure + length).

The length is calculated in the 2-dimensional X/Y-plane.

Specified by:

createMeasureOnLengthOp in interface MeasureGeometryOperations

Parameters:

geometry - the Geometry for which to build measures

keepBeginMeasure - if true, than the measure of the first coordinate is used as start-value

Returns:

a GeometryOperation that returns a Geometry with measures increasing with length