diva.sketch.features

Class StrokeBBox

java.lang.Object

diva.sketch.features.StrokeBBox

public class StrokeBBox
extends Object

StrokeBBox computes the bounding box of a stroke and stores the result in the stroke's property table.

Version:

$Revision: 1.8 $

Author:

Michael Shilman (michaels@eecs.berkeley.edu), Heloise Hse (hwawen@eecs.berkeley.edu)

Field Summary

Fields

Modifier and Type	Field and Description
static String	PROPERTY_KEY The key to a property table, to store or access the cached bounding box of a stroke.

Constructor Summary

Constructors

Constructor and Description
StrokeBBox()

Method Summary

Modifier and Type	Method and Description
static Rectangle2D	apply(TimedStroke s) Compute the stroke's bounding box using the minimum and maximum x, y values in the path.
static Rectangle2D	bboxNoCache(TimedStroke s) Return the bounding box, but do not cache the results in the stroke's property table.

Methods inherited from class java.lang.Object

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

Field Detail

PROPERTY_KEY

public static String PROPERTY_KEY

The key to a property table, to store or access the cached bounding box of a stroke.

Constructor Detail

StrokeBBox

public StrokeBBox()

Method Detail

apply

public static Rectangle2D apply(TimedStroke s)

Compute the stroke's bounding box using the minimum and maximum x, y values in the path. If the specified stroke already has a bounding box in its property table, just return the cached box. This assumes that the stroke does not change. Otherwise, calculate the bounding box and stores it in the stroke's property table so that it won't need to be recalculated.

FIXME - this caching is extremely dangerous for incremental recognition. check number of points in stroke? have a force recompute function?

bboxNoCache

public static Rectangle2D bboxNoCache(TimedStroke s)

Return the bounding box, but do not cache the results in the stroke's property table.