[Geotools-gt2-users] Problem with MapContext.addLayer(MapLayer)

[Virginie B. <vb...@gi...>]

Hi All !

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In my class which extends StyledMapPane, instead of zooming by =
selecting an
area, I draw a polygon (method protected void =
mouseSelectionPerformed(final
Shape area)). What I don't understand is the fact that a zoom + is =
processed
and the new bounding box is the rectangle bounds. I've seen that the =
method
MapContext.addLayer(MapLayer) triggered a LayerListEvent. Is this event
processing the zoom + or is it something else?=20

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GeometryFactory geomFac =3D new GeometryFactory();

Coordinate[] polygonCoordinates =3D new Coordinate[5];

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polygonCoordinates[0] =3D new Coordinate(xMin, yMin);

polygonCoordinates[1] =3D new Coordinate(xMin, yMax);

polygonCoordinates[2] =3D new Coordinate(xMax, yMax);

polygonCoordinates[3] =3D new Coordinate(xMax, yMin);

polygonCoordinates[4] =3D new Coordinate(xMin, yMin);

LinearRing ring =3D geomFac.createLinearRing(polygonCoordinates);

Polygon polygon =3D geomFac.createPolygon(ring,null);

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AttributeType geom =3D =
AttributeTypeFactory.newAttributeType("the_geom",
Polygon.class);

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FeatureType ftPoly =3D null;

try {

         ftPoly =3D FeatureTypeFactory.newFeatureType(new =
AttributeType[]
{geom}, "poly");

} catch (FactoryConfigurationError e1) {

         e1.printStackTrace();

} catch (SchemaException e1) {

         e1.printStackTrace();

}

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Feature feature1 =3D null;

try {

         feature1 =3D ftPoly.create(new Object[] { polygon });

} catch (IllegalAttributeException e) {

         e.printStackTrace();

}

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//feature collection creation ------------------

FeatureCollection fc =3D FeatureCollections.newCollection();

fc.add(feature1);    =20

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final StyleBuilder builder =3D new StyleBuilder();

final Style style;

style =3D =
builder.createStyle(builder.createPolygonSymbolizer(Color.ORANGE,
Color.BLACK, 1));

MapLayer layer =3D new DefaultMapLayer(fc, style);

layer.setTitle("Rectangle");

if (_mapContext=3D=3Dnull) {

        System.out.println("BUG sur le _mapContext !");

}

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_mapContext.clearLayerList();

_mapContext.addLayer(layer);    =20

_mapContext.getLayer(0).setVisible(true);

try {

           this.setMapContext(_mapContext);

} catch (Exception e) {

e.printStackTrace();

}       =20

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Thanks!

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Virginie Berre / Ing=E9nieur =E9tude et d=E9veloppement

G=E9n=E9rale d'Infographie

ZA Les Erables - B=E2timent 4

66, route de Sartrouville - F-78230 - LE PECQ

T=E9l : (33) (0)1.30.15.40.50 - Fax : (33) (0)1.30.15.40.60

 <mailto:vb...@gi...> mailto:vb...@gi...

 <http://www.generale-infographie.fr/> =
http://www.generale-infographie.fr/

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