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public  class  java.awt.Polygon
    extends  java.lang.Object  (I-§1.12)
{
        // Fields
    public int npoints;	§1.35.1
    public int xpoints[];	§1.35.2
    public int ypoints[];	§1.35.3

        // Constructors
    public Polygon();	§1.35.4
    public Polygon(int  xpoints[], int  ypoints[],	§1.35.5
               int  npoints);

        // Methods
    public void addPoint(int  x, int  y);	§1.35.6
    public Rectangle getBoundingBox();	§1.35.7
    public boolean inside(int  x, int  y);	§1.35.8
}

A polygon consists of a list of , where each successive pair of coordinates defines a side of the polygon

The total number of points.

The array of x coordinates.

The array of y coordinates.

Creates an empty polygon.

Constructs and initializes a polygon from the specified parameters.

Parameters:

xpoints - an array of x coordinates

ypoints - an array of y coordinates

npoints - the total number of points in the polygon

Appends a point to this polygon.

If an operation that calculates the bounding box of this polygon (getBoundingBox (II-§1.35.7) or inside (II-§1.35.8)) has already been performed, this method updates the bounding box.

Parameters:

x - the x coordinate of the point

y - the y coordinate of the point

Returns:

the smallest rectangle than contains this polygon

Determines if the specified point is inside this polygon. This method uses an even-odd insideness rule (also known as an "alternating rule") to determine whether the pont is inside this polygon.

It is based on code by Hanpeter van Vliet (hvvliet@inter.nl.net).

Parameters:

x - the xcoordinate of the point to be tested

y - the y coordinate of the point to be tested

Returns:

true if the point is inside this polygon; false otherwise.

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