Package org.uberfire.ext.wires.core.client.util

Class GeometryUtil

java.lang.Object

org.uberfire.ext.wires.core.client.util.GeometryUtil

public class GeometryUtil
extends Object

Useful geometry functions taken from Java's Line2D class

Constructor Summary

Constructors

Constructor	Description
GeometryUtil()

Method Summary

Modifier and Type	Method	Description
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

GeometryUtil

public GeometryUtil()

Method Detail

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.

See http://docs.oracle.com/javase/6/docs/api/java/awt/geom/Line2D.html#ptSegDist%28double,%20double,%20double,%20double,%20double,%20double%29

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.