edu.umd.cs.jazz.util
Class ZUtil

java.lang.Object
  |
  +--edu.umd.cs.jazz.util.ZUtil

All Implemented Interfaces:

java.io.Serializable

public class ZUtil

extends java.lang.Object

implements java.io.Serializable

provides some generic, useful routines.

See Also:

Serialized Form

Constructor Summary

ZUtil()

Method Summary

static float	angleBetweenPoints(java.awt.geom.Point2D pt, java.awt.geom.Point2D a, java.awt.geom.Point2D b) Returns the angle in radians between point a and point b from point pt, that is the angle between a-pt-b.
static boolean	rectIntersectsPolyline(java.awt.geom.Rectangle2D rect, float[] xp, float[] yp, float penWidth) Determine if the specified rectangle intersects the specified polyline.

Methods inherited from class java.lang.Object

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

Constructor Detail

ZUtil

public ZUtil()

Method Detail

rectIntersectsPolyline

public static boolean rectIntersectsPolyline(java.awt.geom.Rectangle2D rect,
                                             float[] xp,
                                             float[] yp,
                                             float penWidth)

Determine if the specified rectangle intersects the specified polyline.

Parameters:

rect - The rectangle that is being tested for intersection

xp - The array of X-coordinates that determines the polyline

yp - The array of Y-coordinates that determines the polyline

penWidth - The width of the polyline

Returns:

true if the rectangle intersects the polyline.

angleBetweenPoints

public static float angleBetweenPoints(java.awt.geom.Point2D pt,
                                       java.awt.geom.Point2D a,
                                       java.awt.geom.Point2D b)

Returns the angle in radians between point a and point b from point pt, that is the angle between a-pt-b.

Parameters:

pt,a,b - The points that specify the angle

Returns:

the angle