/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53115 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.ogcwebservices.wms.capabilities;
/**
* Layers may include a <ScaleHint> element that suggests minimum and maximum
* scales for which it is appropriate to display this layer. Because WMS output
* is destined for output devices of arbitrary size and resolution, the usual
* definition of scale as the ratio of map size to real-world size is not
* appropriate here. The following definition of Scale Hint is recommended.
* Consider a hypothetical map with a given Bounding Box, width and height.
* The central pixel of that map (or the pixel just to the northwest of center)
* will have some size, which can be expressed as the ground distance in meters
* of the southwest to northeast diagonal of that pixel. The two values in
* ScaleHint are the minimum and maximum recommended values of that diagonal. It
* is recognized that this definition is not geodetically precise, but at the
* same time the hope is that by including it conventions will develop that can
* be later specified more clearly.
* <p>----------------------------------------------------------------------</p>
*
* @author <a href="mailto:k.lupp@web.de">Andreas Poth</a>
* @author <a href="mailto:mschneider@lat-lon.de">Markus Schneider</a>
* @version $Revision: 1.9 $
*/
public class ScaleHint {
private double max = Double.MAX_VALUE;
private double min = 0;
/**
* constructor initializing the class with the <ScaleHint>
* @param min
* @param max
*/
public ScaleHint( double min, double max ) {
setMin( min );
setMax( max );
}
/**
* @return the minimum scale for which a layer is defined
*/
public double getMin() {
return min;
}
/**
* sets the minimum scale for which a layer is defined
* @param min
*/
public void setMin( double min ) {
this.min = min;
}
/**
* @return the maximum scale for which a layer is defined
*/
public double getMax() {
return max;
}
/**
* sets the maximum scale for which a layer is defined
* @param max
*/
public void setMax( double max ) {
this.max = max;
}
@Override
public String toString() {
String ret = null;
ret = "min = " + min + "\n";
ret += ( "max = " + max + "\n" );
return ret;
}
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: ScaleHint.java,v $
Revision 1.9 2006/09/08 08:42:02 schmitz
Updated the WMS to be 1.1.1 conformant once again.
Cleaned up the WMS code.
Added cite WMS test data.
Revision 1.8 2006/07/12 14:46:18 poth
comment footer added
********************************************************************** */