Package org.openstreetmap.josm.actions

Class AlignInLineAction.Line

java.lang.Object

org.openstreetmap.josm.actions.AlignInLineAction.Line

Enclosing class:

AlignInLineAction

static class AlignInLineAction.Line
extends java.lang.Object

Class that represent a line

Field Summary

Fields

Modifier and Type	Field	Description
private double	a	Line equation ax + by + c = 0 Such as a^2 + b^2 = 1, ie (-b, a) is a unit vector of line
private double	b
private double	c
private double	xM	(xM, yM) are coordinates of a point of the line
private double	yM

Constructor Summary

Constructors

Constructor	Description
Line(Node first, Node last)	Init a line by 2 nodes.
Line(Way way)	Init a line equation from a way.

Method Summary

Modifier and Type	Method	Description
Command	intersectionCommand(Node n, AlignInLineAction.Line other)	Intersection of two line.
Command	projectionCommand(Node n)	Orthogonal projection of a node N along this line.

Methods inherited from class java.lang.Object

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

Field Detail

a

private double a

Line equation ax + by + c = 0 Such as a^2 + b^2 = 1, ie (-b, a) is a unit vector of line

b

private double b

c

private final double c

xM

private final double xM

(xM, yM) are coordinates of a point of the line

yM

private final double yM

Constructor Detail

Line

Line(Node first,
     Node last)
throws AlignInLineAction.InvalidSelection

Init a line by 2 nodes.

Parameters:

first - One point of the line

last - Other point of the line

Throws:

AlignInLineAction.InvalidSelection - if nodes have same coordinates

Line

Line(Way way)
throws AlignInLineAction.InvalidSelection

Init a line equation from a way.

Parameters:

way - Use extremity of this way to compute line equation

Throws:

AlignInLineAction.InvalidSelection - if nodes have same coordinates

Method Detail

projectionCommand

public Command projectionCommand(Node n)

Orthogonal projection of a node N along this line.

Parameters:

n - Node to be projected

Returns:

The command that do the projection of this node

intersectionCommand

public Command intersectionCommand(Node n,
                                   AlignInLineAction.Line other)
                            throws AlignInLineAction.InvalidSelection

Intersection of two line.

Parameters:

n - Node to move to the intersection

other - Second line for intersection

Returns:

The command that move the node

Throws:

AlignInLineAction.InvalidSelection - if two parallels ways found