com.klg.jclass.swing.gauge
Class JCPolygon

java.lang.Object
  |
  +--java.awt.Polygon
        |
        +--com.klg.jclass.swing.gauge.JCPolygon

All Implemented Interfaces:

Serializable, Shape

Direct Known Subclasses:

JCIndicatorStyle, JCTickStyle

public abstract class JCPolygon

extends Polygon

implements Serializable

Provides an extension of the Polygon class that stores a bounding box for easy access. This is also done so that the bounding box will only have to be calculated once. Both JCIndicatorStyle and JCTickStyle subclass from this abstract class.

See Also:

Serialized Form

Field Summary

protected Rectangle

boundingBox min_x, min_y are x and y, and max_x and max_y are width and height.

Fields inherited from class java.awt.Polygon

bounds, npoints, xpoints, ypoints

Constructor Summary

JCPolygon()

JCPolygon(int[] xpoints, int[] ypoints, int numPoints)
Constructs an indicator using the points of a polygon.

Method Summary

Rectangle

getExtrema() Returns the upper-left-most point of the polygon as x, y in the Rectangle, and the lower-right-most point as width and height.

Methods inherited from class java.awt.Polygon

addPoint, contains, contains, contains, contains, contains, contains, getBoundingBox, getBounds, getBounds2D, getPathIterator, getPathIterator, inside, intersects, intersects, invalidate, reset, translate

Methods inherited from class java.lang.Object

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

Field Detail

boundingBox

protected Rectangle boundingBox

min_x, min_y are x and y, and max_x and max_y are width and height.

Constructor Detail

JCPolygon

public JCPolygon(int[] xpoints,
                 int[] ypoints,
                 int numPoints)

Constructs an indicator using the points of a polygon. For a user-defined indicator.

Parameters:

xpoints - the x coordinates for the polygon

ypoints - the y coordinates for the polygon

numPoints - the number of points in this polygon

JCPolygon

public JCPolygon()

Method Detail

getExtrema

public Rectangle getExtrema()

Returns the upper-left-most point of the polygon as x, y in the Rectangle, and the lower-right-most point as width and height. The rectangle is defined to be: x = min_x, y = min_y, width = max_x and height = max_y.

Returns:

return the upper-left-most point of the polygon as x, y in the Rectangle, and the lower-right-most point as width and height