Package org.opentrafficsim.core.geometry

Class OTSBufferingJTS

java.lang.Object

org.opentrafficsim.core.geometry.OTSBufferingJTS

public final class OTSBufferingJTS
extends java.lang.Object

Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See OpenTrafficSim License.

$LastChangedDate: 2015-07-16 10:20:53 +0200 (Thu, 16 Jul 2015) $, @version $Revision: 1124 $, by $Author: pknoppers $, initial version Jul 22, 2015

Author:

Alexander Verbraeck, Peter Knoppers

Method Summary

Modifier and Type	Method	Description
static OTSPoint3D	closestPointOnSegmentToPoint(OTSPoint3D lineP1, OTSPoint3D lineP2, OTSPoint3D point)	Project a point on a line (2D).
static double	distanceLineSegmentToPoint(OTSPoint3D lineP1, OTSPoint3D lineP2, OTSPoint3D point)	Compute the distance of a line segment to a point.
static OTSLine3D	offsetLine(OTSLine3D referenceLine, double offset)	Construct parallel line without.
static OTSLine3D	offsetLine(OTSLine3D referenceLine, double offsetAtStart, double offsetAtEnd)	Create a line at linearly varying offset from a reference line.

Methods inherited from class java.lang.Object

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

Method Detail

distanceLineSegmentToPoint

public static double distanceLineSegmentToPoint(OTSPoint3D lineP1,
                                                OTSPoint3D lineP2,
                                                OTSPoint3D point)

Compute the distance of a line segment to a point. If the the projected points lies outside the line segment, the nearest end point of the line segment is returned. Otherwise the point return lies between the end points of the line segment.
Adapted from example code provided by Paul Bourke.

Parameters:

lineP1 - OTSPoint3D; start of line segment

lineP2 - OTSPoint3D; end of line segment

point - OTSPoint3D; Point to project onto the line segment

Returns:

double; the distance of the projected point or one of the end points of the line segment to the point

closestPointOnSegmentToPoint

public static OTSPoint3D closestPointOnSegmentToPoint(OTSPoint3D lineP1,
                                                      OTSPoint3D lineP2,
                                                      OTSPoint3D point)

Project a point on a line (2D). If the the projected points lies outside the line segment, the nearest end point of the line segment is returned. Otherwise the point return lies between the end points of the line segment.
Adapted from example code provided by Paul Bourke.

Parameters:

lineP1 - OTSPoint3D; start of line segment

lineP2 - OTSPoint3D; end of line segment

point - OTSPoint3D; Point to project onto the line segment

Returns:

Point2D.Double; either lineP1, or lineP2 or a new OTSPoint3D that lies somewhere in between those two

offsetLine

public static OTSLine3D offsetLine(OTSLine3D referenceLine,
                                   double offset)

Construct parallel line without.

Parameters:

referenceLine - OTSLine3D; the reference line

offset - double; offset distance from the reference line; positive is LEFT, negative is RIGHT

Returns:

OTSLine3D; the line that has the specified offset from the reference line

offsetLine

public static OTSLine3D offsetLine(OTSLine3D referenceLine,
                                   double offsetAtStart,
                                   double offsetAtEnd)
                            throws OTSGeometryException

Create a line at linearly varying offset from a reference line. The offset may change linearly from its initial value at the start of the reference line to its final offset value at the end of the reference line.

Parameters:

referenceLine - OTSLine3D; the Geometry of the reference line

offsetAtStart - double; offset at the start of the reference line (positive value is Left, negative value is Right)

offsetAtEnd - double; offset at the end of the reference line (positive value is Left, negative value is Right)

Returns:

Geometry; the Geometry of the line at linearly changing offset of the reference line

Throws:

OTSGeometryException - when this method fails to create the offset line