Package adams.gui.visualization.image

Class PolygonUtils

java.lang.Object

adams.gui.visualization.image.PolygonUtils

public class PolygonUtils
extends Object

Helper class for polygons.

Author:

fracpete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor	Description
PolygonUtils()

Method Summary

Modifier and Type	Method	Description
static Polygon	addVertext(Polygon poly, Point vertex)	Adds the vertex to the polygon at the appropriate position.
static Rectangle	boundingBox(List<Point> points)	Returns the bounding box for the polygon.
static double	minDistance(Point A, Point B, Point E)	Returns the minimum distance between a line segment AB and a point E.
static List<Point>	toPoints(Polygon poly)	Turns the polygon into a list of points.
static Polygon	toPolygon(Rectangle rect)	Turns the rectangle into a polygon.
static Polygon	toPolygon(List<Point> points)	Returns the bounding box for the polygon.

Methods inherited from class java.lang.Object

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

Constructor Detail

PolygonUtils

public PolygonUtils()

Method Detail

toPolygon

public static Polygon toPolygon(List<Point> points)

Returns the bounding box for the polygon.

Parameters:

points - the polygon points to calculate the bounding box for

Returns:

the polygon

toPolygon

public static Polygon toPolygon(Rectangle rect)

Turns the rectangle into a polygon.

Parameters:

rect - the polygon to convert

Returns:

the polygon

toPoints

public static List<Point> toPoints(Polygon poly)

Turns the polygon into a list of points.

Parameters:

poly - the polygon

Returns:

the list of points

boundingBox

public static Rectangle boundingBox(List<Point> points)

Returns the bounding box for the polygon.

Parameters:

points - the polygon points to calculate the bounding box for

Returns:

the bbox

minDistance

public static double minDistance(Point A,
                                 Point B,
                                 Point E)

Returns the minimum distance between a line segment AB and a point E.

Parameters:

A - the start of the line segment

B - the end of the line segment

E - the point to calculate the min distance to

Returns:

the minimum distance

addVertext

public static Polygon addVertext(Polygon poly,
                                 Point vertex)

Adds the vertex to the polygon at the appropriate position.

Parameters:

poly - the polygon to add to

vertex - the vertex to insert

Returns:

the new polygon