question: public static Proj createOMProjection ( Properties props , Projection defaultProj ) { float scale = PropUtils . floatFromProperties ( props , SCALE , defaultProj . getScale ( ) ) ; int height = PropUtils . intFromProperties ( props , HEIGHT , defaultProj . getHeight ( ) ) ; int width = PropUtils . intFromProperties ( props , WIDTH , defaultProj . getWidth ( ) ) ; Point2D llp = defaultProj . getCenter ( ) ; float longitude = PropUtils . floatFromProperties ( props , LON , ( float ) llp . getX ( ) ) ; float latitude = PropUtils . floatFromProperties ( props , LAT , ( float ) llp . getY ( ) ) ; Class < ? extends Projection > projClass = null ; String projType = props . getProperty ( PROJTYPE ) ; ProjectionFactory projFactory = ProjectionFactory . loadDefaultProjections ( ) ; if ( projType != null ) { projClass = projFactory . getProjClassForName ( projType ) ; } if ( projClass == null ) { projClass = defaultProj . getClass ( ) ; } if ( Debug . debugging ( "imageserver" ) ) { Debug . output ( "ImageServerUtils.createOMProjection: projection " + projClass . getName ( ) + ", with HEIGHT = " + height + ", WIDTH = " + width + ", lat = " + latitude + ", lon = " + longitude + ", scale = " + scale ) ; } Proj proj = ( Proj ) projFactory . makeProjection ( projClass , new Point2D . Float ( longitude , latitude ) , scale , width , height ) ; return ( Proj ) proj ; }
target:  Create an OpenMap projection from the values stored in a Properties object. The properties inside should be parsed out from a map request, with the keywords being those defined in the ImageServerConstants interface. Assumes that the shared instance of the ProjectionFactory has been initialized with the expected Projections.