com.github.davidmoten.rtree.internal

Class Line2D

java.lang.Object

com.github.davidmoten.rtree.internal.Line2D

public final class Line2D
extends Object

Port of java.awt.geom.Line2D. Created because Android does not support java.awt.*.

Constructor Summary

Constructors

Constructor and Description
Line2D(double x1, double y1, double x2, double y2)

Method Summary

Modifier and Type	Method and Description
double	getX1()
double	getX2()
double	getY1()
double	getY2()
boolean	intersectsLine(Line2D l) Tests if the specified line segment intersects this line segment.
double	ptSegDist(double px, double py) Returns the distance from a point to this line segment.
static double	ptSegDist(double x1, double y1, double x2, double y2, double px, double py) Returns the distance from a point to a line segment.
static double	ptSegDistSq(double x1, double y1, double x2, double y2, double px, double py) Returns the square of the distance from a point to a line segment.

Methods inherited from class java.lang.Object

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

Constructor Detail

Line2D

public Line2D(double x1,
              double y1,
              double x2,
              double y2)

Method Detail

getX1

public double getX1()

getX2

public double getX2()

getY1

public double getY1()

getY2

public double getY2()

ptSegDist

public double ptSegDist(double px,
                        double py)

Returns the distance from a point to this line segment. The distance measured is the distance between the specified point and the closest point between the current line's end points. If the specified point intersects the line segment in between the end points, this method returns 0.0.

Parameters:

px - the X coordinate of the specified point being measured against this line segment

py - the Y coordinate of the specified point being measured against this line segment

Returns:

a double value that is the distance from the specified point to the current line segment.

Since:

1.2

ptSegDist

public static double ptSegDist(double x1,
                               double y1,
                               double x2,
                               double y2,
                               double px,
                               double py)

Returns the distance from a point to a line segment. The distance measured is the distance between the specified point and the closest point between the specified end points. If the specified point intersects the line segment in between the end points, this method returns 0.0.

Parameters:

x1 - the X coordinate of the start point of the specified line segment

y1 - the Y coordinate of the start point of the specified line segment

x2 - the X coordinate of the end point of the specified line segment

y2 - the Y coordinate of the end point of the specified line segment

px - the X coordinate of the specified point being measured against the specified line segment

py - the Y coordinate of the specified point being measured against the specified line segment

Returns:

a double value that is the distance from the specified point to the specified line segment.

Since:

1.2

ptSegDistSq

public static double ptSegDistSq(double x1,
                                 double y1,
                                 double x2,
                                 double y2,
                                 double px,
                                 double py)

Returns the square of the distance from a point to a line segment. The distance measured is the distance between the specified point and the closest point between the specified end points. If the specified point intersects the line segment in between the end points, this method returns 0.0.

Parameters:

x1 - the X coordinate of the start point of the specified line segment

y1 - the Y coordinate of the start point of the specified line segment

x2 - the X coordinate of the end point of the specified line segment

y2 - the Y coordinate of the end point of the specified line segment

px - the X coordinate of the specified point being measured against the specified line segment

py - the Y coordinate of the specified point being measured against the specified line segment

Returns:

a double value that is the square of the distance from the specified point to the specified line segment.

Since:

1.2

intersectsLine

public boolean intersectsLine(Line2D l)

Tests if the specified line segment intersects this line segment.

Parameters:

l - the specified Line2D

Returns:

true if this line segment and the specified line segment intersect each other; false otherwise.

Since:

1.2