Well, I do it, but It don't work, I'm very stuck in this, because I'm new in GIS. I need to select just a polygon and not a line, because the system which I want to make is a "Building Locator" (Or something else, I hope you'll understand what I mean), I send you my full prototype.
I replace this:
Point screenPoint = evt.getPoint();
Rectangle screenRect = new Rectangle(
screenPoint.x - 2,
screenPoint.y - 2,
1,
1);
AffineTransform pixel2crs =
mJmapFrame.getMapPane().getScreenToWorldTransform();
Rectangle2D creRect =
pixel2crs.createTransformedShape(screenRect).getBounds2D();
ReferencedEnvelope mBbox = new ReferencedEnvelope(
creRect,
mJmapFrame.getMapContext().getCoordinateReferenceSystem());
Filter mFilter = mFilterFactory.intersects(
mFilterFactory.property(mGeomName),
mFilterFactory.literal(mBbox));
For this:
Point screenPoint = evt.getPoint();
Filter mFilter = mFilterFactory.intersects(
mFilterFactory.property(mGeomName),
mFilterFactory.literal(screenPoint));
Sorry for my nescience... xD
-----------
2010/5/19 Michael Bedward <[email protected]>
> Hi Amador,
>
> > Hi guys, I'm following some tutorial about GeoTools, in the selection lab
> > the author use a rectangle to the selection, but It's no very precise, so
> I
> > wonder, Can I use pixel or point to perform selection in a poligon?
> > I hope you can help me.
>
> Certainly. The example uses a rectangle because it catches points and
> lines as well as polygons and keeps the tutorial code simple. For
> polygons, you can use a point instead of a rectangle in the
> "intersects" filter to get better precision.
>
> > PD: Sorry for my spanglish, I'm learning english... xD
>
> Your spanglish is a lot better than my (non-existent) spanish :-)
>
> Michael
>
--
TSU. Amador Cuenca
selection.java
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