org.geolatte.geom.cga

Class CircularArcLinearizer<P extends Position>

java.lang.Object

org.geolatte.geom.cga.CircularArcLinearizer<P>

public class CircularArcLinearizer<P extends Position>
extends java.lang.Object

Linearizes arc segments defined by three consecutive Positions

The implementation guarantees that the specified Positions are among the returned, linearized Positions

Created by Karel Maesen, Geovise BVBA on 02/03/15.

Field Summary

Fields

Modifier and Type	Field and Description
private PositionSequenceBuilder<P>	builder
private Circle	c
private boolean	isCounterClockwise
private P	p0
private P	p1
private P	p2
private double	threshold

Constructor Summary

Constructors

Constructor and Description
CircularArcLinearizer(P p0, P p1, P p2, double threshold)

Method Summary

Modifier and Type	Method and Description
private void	AddPointsBetweenPolarCoordinates(double theta, double theta1, P p, P p1, double maxAngleIncr, PositionSequenceBuilder<P> builder)
private double	angleInDirection(Position p)
Circle	getCircle()
double	getRadius()
PositionSequence<P>	linearize() Linearizes the arc segment defined by the three Positions specified in this instance's constructor
PositionSequence<P>	linearizeCircle()

Methods inherited from class java.lang.Object

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

Field Detail

threshold

private final double threshold

p0

private final P extends Position p0

p1

private final P extends Position p1

p2

private final P extends Position p2

c

private final Circle c

isCounterClockwise

private final boolean isCounterClockwise

builder

private final PositionSequenceBuilder<P extends Position> builder

Constructor Detail

CircularArcLinearizer

public CircularArcLinearizer(P p0,
                             P p1,
                             P p2,
                             double threshold)

Method Detail

getCircle

public Circle getCircle()

getRadius

public double getRadius()

linearizeCircle

public PositionSequence<P> linearizeCircle()

linearize

public PositionSequence<P> linearize()

Linearizes the arc segment defined by the three Positions specified in this instance's constructor

Returns:

a PositionSequence that approximates the arc segment

AddPointsBetweenPolarCoordinates

private void AddPointsBetweenPolarCoordinates(double theta,
                                              double theta1,
                                              P p,
                                              P p1,
                                              double maxAngleIncr,
                                              PositionSequenceBuilder<P> builder)

angleInDirection

private double angleInDirection(Position p)