skrueger/geotools/ZoomRestrictableGridInterface.java

/*******************************************************************************
 * Copyright (c) 2009 Martin O. J. Schmitz.
 * 
 * This file is part of the SCHMITZM library - a collection of utility 
 * classes based on Java 1.6, focusing (not only) on Java Swing 
 * and the Geotools library.
 * 
 * The SCHMITZM project is hosted at:
 * http://wald.intevation.org/projects/schmitzm/
 * 
 * This program 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 3
 * of the License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License (license.txt)
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * or try this link: http://www.gnu.org/licenses/lgpl.html
 * 
 * Contributors:
 *     Martin O. J. Schmitz - initial API and implementation
 *     Stefan A. Krüger - additional utility classes
 ******************************************************************************/
package skrueger.geotools;

/**
 * Classes that implement {@link ZoomRestrictableGridInterface} can be restricted to their max- and/or min zoom scale
 *
 * @author <a href="mailto:[email protected]">Stefan Alfons Kr&uuml;ger</a>
 *
 */
public interface ZoomRestrictableGridInterface {

        /**
         * The resolution is calculated by number of units in layer's crs / number of pixels.
         * null is allowed as return value.
         *
         * @return the maximum resolution this grid provides. (the smalles value)
         */
        Double getMaxResolution();

        /**
         * The resolution is calculated by number of units in layer's crs / number of pixels.
         * null is allowed as return value.
         *
         * @return the minimum resolution this grid provides. (the biggest value)
         */
        Double getMinResolution();

}
1	alfonx	244	/*******************************************************************************
2			* Copyright (c) 2009 Martin O. J. Schmitz.
3			*
4			* This file is part of the SCHMITZM library - a collection of utility
5	alfonx	256	* classes based on Java 1.6, focusing (not only) on Java Swing
6	alfonx	244	* and the Geotools library.
7			*
8			* The SCHMITZM project is hosted at:
9			* http://wald.intevation.org/projects/schmitzm/
10			*
11			* This program is free software; you can redistribute it and/or
12			* modify it under the terms of the GNU Lesser General Public License
13			* as published by the Free Software Foundation; either version 3
14			* of the License, or (at your option) any later version.
15			*
16			* This program is distributed in the hope that it will be useful,
17			* but WITHOUT ANY WARRANTY; without even the implied warranty of
18			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19			* GNU General Public License for more details.
20			*
21			* You should have received a copy of the GNU Lesser General Public License (license.txt)
22			* along with this program; if not, write to the Free Software
23			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24			* or try this link: http://www.gnu.org/licenses/lgpl.html
25			*
26			* Contributors:
27			* Martin O. J. Schmitz - initial API and implementation
28			* Stefan A. Krüger - additional utility classes
29			******************************************************************************/
30			package skrueger.geotools;
31
32			/**
33			* Classes that implement {@link ZoomRestrictableGridInterface} can be restricted to their max- and/or min zoom scale
34			*
35			* @author <a href="mailto:[email protected]">Stefan Alfons Krüger</a>
36			*
37			*/
38			public interface ZoomRestrictableGridInterface {
39
40			/**
41			* The resolution is calculated by number of units in layer's crs / number of pixels.
42			* null is allowed as return value.
43			*
44			* @return the maximum resolution this grid provides. (the smalles value)
45			*/
46			Double getMaxResolution();
47
48			/**
49			* The resolution is calculated by number of units in layer's crs / number of pixels.
50			* null is allowed as return value.
51			*
52			* @return the minimum resolution this grid provides. (the biggest value)
53			*/
54			Double getMinResolution();
55
56			}