Util

Summary

Util
Functions
extend	Copy all properties of a source object to a destination object.
Constants
INCHES_PER_UNIT	{Object} Constant inches per unit -- borrowed from MapServer mapscale.c derivation of nautical miles from http://en.wikipedia.org/wiki/Nautical_mile Includes the full set of units supported by CS-MAP (http://trac.osgeo.org/csmap/) and PROJ.4 (http://trac.osgeo.org/proj/) The hardcoded table is maintain in a CS-MAP source code module named CSdataU.c The hardcoded table of PROJ.4 units are in pj_units.c.
DOTS_PER_INCH	{Integer} 72 (A sensible default)
Functions
getScrollbarWidth	This function has been modified by the OpenLayers from the original version, written by Matthew Eernisse and released under the Apache 2 license here:

Functions

extend

OpenLayers.Util.extend = function( destination,
source )

Copy all properties of a source object to a destination object. Modifies the passed in destination object. Any properties on the source object that are set to undefined will not be (re)set on the destination object.

Parameters

destination	{Object} The object that will be modified
source	{Object} The object with properties to be set on the destination

Returns

{Object} The destination object.

Constants

INCHES_PER_UNIT

{Object} Constant inches per unit -- borrowed from MapServer mapscale.c derivation of nautical miles from http://en.wikipedia.org/wiki/Nautical_mile Includes the full set of units supported by CS-MAP (http://trac.osgeo.org/csmap/) and PROJ.4 (http://trac.osgeo.org/proj/) The hardcoded table is maintain in a CS-MAP source code module named CSdataU.c The hardcoded table of PROJ.4 units are in pj_units.c.

DOTS_PER_INCH

{Integer} 72 (A sensible default)

Functions

getScrollbarWidth

OpenLayers.Util.getScrollbarWidth = function()

This function has been modified by the OpenLayers from the original version, written by Matthew Eernisse and released under the Apache 2 license here:

http://www.fleegix.org/articles/2006/05/30/getting-the-scrollbar-width-in-pixels

It has been modified simply to cache its value, since it is physically impossible that this code could ever run in more than one browser at once.

Returns

{Integer}