org.gvsig.fmap.mapcontext.layers.operations

Interface InfoByPoint

All Known Subinterfaces:

GraphicLayer, VectorLayer

All Known Implementing Classes:

DefaultGraphicLayer, FLayers, FLyrVect

public interface InfoByPoint

Interface that must be implemented by layers which support the operation "information by point".

That operation allows get meta-information from a point and an area around, of a layer.

Method Summary

Methods

Modifier and Type	Method and Description
org.gvsig.tools.dynobject.DynObjectSet	getInfo(org.gvsig.fmap.geom.primitive.Point p, double tolerance) Executes a consultation about information of a point on the layer.

Method Detail

getInfo

org.gvsig.tools.dynobject.DynObjectSet getInfo(org.gvsig.fmap.geom.primitive.Point p,
                                             double tolerance)
                                               throws LoadLayerException,
                                                      org.gvsig.fmap.dal.exception.DataException

Executes a consultation about information of a point on the layer.

There is an area around the point where will got the information.

Parameters:

p - point in map coordinates where is the consultation

tolerance - permissible margin around the coordinates of the point where the method will got the information. Each singular implementation of this method would use it in a different way. The unit are in map coordinates.

Throws:

LoadLayerException

org.gvsig.fmap.dal.exception.DataException