One thing to check (in the debugger) is that x&y are the right way around
all the way through the process.
Ian
On 22 Apr 2016 13:30, "Thilina Yapa Bandara" <[email protected]> wrote:
> Hello all,
>
> I'm using geotools v14.3 to load a shapefile (Java Swing application). I
> want to allow the customers to use the mouse to click on the map area to
> draw new points, lines and polygons. First, I'm testing the points. So, a
> customer should be able to draw a point on the clicked location.
>
> *My current approach*
>
> After following few articles, I first capture the clicked mouse location
> with a mapmouselistener.
>
> @Override
> public void onMouseClicked(MapMouseEvent ev) {
> System.out.println("mouse clicked : " + ev.getWorldPos());
> DirectPosition2D p = ev.getWorldPos();
> drawMyPoint(p.getX(), p.getY());
>
> }
>
> Point drawing function is as follows.
>
> void drawMyPoint(double x, double y) {
> SimpleFeatureTypeBuilder b = new SimpleFeatureTypeBuilder();
> b.setName("MyFeatureType");
>
> // set crs
> b.setCRS(DefaultGeographicCRS.WGS84);
> // add geometry
> b.add("location", Point.class);
>
> // build the type
> final SimpleFeatureType TYPE = b.buildFeatureType();
>
> // create features using the type defined
> SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(TYPE);
> GeometryFactory geometryFactory =
> JTSFactoryFinder.getGeometryFactory();
> com.vividsolutions.jts.geom.Point point =
> geometryFactory.createPoint(new Coordinate(x, y));
> featureBuilder.add(point);
> SimpleFeature feature = featureBuilder.buildFeature("FeaturePoint");
> DefaultFeatureCollection featureCollection = new
> DefaultFeatureCollection("internal", TYPE);
> featureCollection.add(feature); //Add feature 1
> // Add feature 2, 3, etc
>
> Style style = SLD.createPointStyle("Star", Color.BLUE, Color.BLUE,
> 0.3f, 15);
> Layer layer = new FeatureLayer(featureCollection, style);
> layer.setTitle("NewPoint");
> map.addLayer(layer);
> mapPane.repaint();
>
> }
>
> *Problem*
>
> I can see the layer name being added to the map layer table. But the point
> is not visible on the map.
>
> I would be thankful for any insights.
>
> Thank you.
> --
> regards,
>
> *Thilina Yapa Bandara*
>
> (*ආයුබෝවන් *- May All Beings Live Long)
>
>
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