svn-gvsig-desktop / tags / v2_0_0_Build_2020 / libraries / libFMap_mapcontext / src / org / gvsig / fmap / mapcontext / layers / operations / InfoByPoint.java @ 33790
History | View | Annotate | Download (4.37 KB)
| 1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
|---|---|
| 2 |
*
|
| 3 |
* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
| 4 |
*
|
| 5 |
* This program is free software; you can redistribute it and/or
|
| 6 |
* modify it under the terms of the GNU General Public License
|
| 7 |
* as published by the Free Software Foundation; either version 2
|
| 8 |
* of the License, or (at your option) any later version.
|
| 9 |
*
|
| 10 |
* This program is distributed in the hope that it will be useful,
|
| 11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 13 |
* GNU General Public License for more details.
|
| 14 |
*
|
| 15 |
* You should have received a copy of the GNU General Public License
|
| 16 |
* along with this program; if not, write to the Free Software
|
| 17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 18 |
*
|
| 19 |
* For more information, contact:
|
| 20 |
*
|
| 21 |
* Generalitat Valenciana
|
| 22 |
* Conselleria d'Infraestructures i Transport
|
| 23 |
* Av. Blasco Ib??ez, 50
|
| 24 |
* 46010 VALENCIA
|
| 25 |
* SPAIN
|
| 26 |
*
|
| 27 |
* +34 963862235
|
| 28 |
* gvsig@gva.es
|
| 29 |
* www.gvsig.gva.es
|
| 30 |
*
|
| 31 |
* or
|
| 32 |
*
|
| 33 |
* IVER T.I. S.A
|
| 34 |
* Salamanca 50
|
| 35 |
* 46005 Valencia
|
| 36 |
* Spain
|
| 37 |
*
|
| 38 |
* +34 963163400
|
| 39 |
* dac@iver.es
|
| 40 |
*/
|
| 41 |
package org.gvsig.fmap.mapcontext.layers.operations; |
| 42 |
|
| 43 |
import java.awt.Point; |
| 44 |
|
| 45 |
import org.gvsig.fmap.dal.exception.DataException; |
| 46 |
import org.gvsig.fmap.mapcontext.exceptions.LoadLayerException; |
| 47 |
import org.gvsig.tools.dynobject.DynObjectSet; |
| 48 |
import org.gvsig.tools.task.Cancellable; |
| 49 |
|
| 50 |
|
| 51 |
/**
|
| 52 |
* <p>Interface that must be implemented by layers which support the operation "<i>information by point</i>".</p>
|
| 53 |
*
|
| 54 |
* <p>That operation allows get meta-information from a point and an area around, of a layer.</p>
|
| 55 |
*/
|
| 56 |
public interface InfoByPoint { |
| 57 |
|
| 58 |
/**
|
| 59 |
* <p>
|
| 60 |
* Executes a consultation about information of a point on the layer.
|
| 61 |
* </p>
|
| 62 |
*
|
| 63 |
* <p>
|
| 64 |
* There is an area around the point where will got the information.
|
| 65 |
* </p>
|
| 66 |
*
|
| 67 |
* @param p
|
| 68 |
* point where is the consultation
|
| 69 |
* @param tolerance
|
| 70 |
* permissible margin around the coordinates of the point where
|
| 71 |
* the method will got the information. Each
|
| 72 |
* singular implementation of this method would use it in a
|
| 73 |
* different way. The coordinates also depend on the
|
| 74 |
* implementation.
|
| 75 |
* @param cancel
|
| 76 |
* shared object that determines if this layer can continue being
|
| 77 |
* drawn
|
| 78 |
*
|
| 79 |
* @return a DynObjectSet. If the InfoByPoint Object is a vector layer it
|
| 80 |
* should return a FeatureSet.
|
| 81 |
* @throws DataException
|
| 82 |
* TODO
|
| 83 |
* @throws LoadLayerException
|
| 84 |
* any exception produced using the driver.
|
| 85 |
*/
|
| 86 |
public DynObjectSet getInfo(Point p, double tolerance, Cancellable cancel) |
| 87 |
throws LoadLayerException, DataException;
|
| 88 |
|
| 89 |
/**
|
| 90 |
* <p>
|
| 91 |
* Executes a consultation about information of a point on the layer.
|
| 92 |
* </p>
|
| 93 |
*
|
| 94 |
* <p>
|
| 95 |
* There is an area around the point where will got the information.
|
| 96 |
* </p>
|
| 97 |
*
|
| 98 |
* @param p
|
| 99 |
* point where is the consultation
|
| 100 |
* @param tolerance
|
| 101 |
* permissible margin around the coordinates of the point where
|
| 102 |
* the method will got the information. Each
|
| 103 |
* singular implementation of this method would use it in a
|
| 104 |
* different way. The coordinates also depend on the
|
| 105 |
* implementation.
|
| 106 |
* @param cancel
|
| 107 |
* shared object that determines if this layer can continue being
|
| 108 |
* drawn
|
| 109 |
*
|
| 110 |
* @param fast
|
| 111 |
* if true try to reuse objects as much as possible to make the
|
| 112 |
* object iteration faster. If true, DynObjects got through the
|
| 113 |
* returned set must not be stored unless cloned.
|
| 114 |
*
|
| 115 |
* @return a DynObjectSet. If the InfoByPoint Object is a vector layer it
|
| 116 |
* should return a FeatureSet.
|
| 117 |
* @throws DataException
|
| 118 |
* TODO
|
| 119 |
* @throws LoadLayerException
|
| 120 |
* any exception produced using the driver.
|
| 121 |
*/
|
| 122 |
public DynObjectSet getInfo(Point p, double tolerance, Cancellable cancel, |
| 123 |
boolean fast) throws LoadLayerException, DataException; |
| 124 |
} |