Hi,
i am starting to work with gt-2.5-m2 and therefore doing some basic learning.
Unfortunately i am stuck.
What i am doing: I created three FeatureCollections, one for lines, one for
points and one for areas.
Than created styles for ech feature-type, and finally adding the styles to a
mapcontext:
// point style
StyleBuilder builder = new StyleBuilder();
Mark mark = builder.createMark("circle", Color.RED);
Graphic g = builder.createGraphic(null,mark,null);
PointSymbolizer s = builder.createPointSymbolizer( g );
Style pointStyle = builder.createStyle( s );
// line style
LineSymbolizer lsy = builder.createLineSymbolizer( Color.BLACK, 1);
Style lineStyle = builder.createStyle(lsy);
// area style
PolygonSymbolizer ps = builder.createPolygonSymbolizer( new Color(
200,100,100 ) );
Style areaStyle = builder.createStyle(ps);
GraphicEnhancedMapContext map = new
GraphicEnhancedMapContext(DefaultGeographicCRS.WGS84) ;
map.addLayer( new DefaultMapLayer( points, pointStyle ) );
map.addLayer( 1, new DefaultMapLayer( lines, lineStyle ) );
map.addLayer( 2, new DefaultMapLayer( areas, areaStyle ));
Rectangle outputArea = new Rectangle(width,height); // Paint Area
Envelope mapArea = new Envelope( vp.getMinLon(), vp.getMaxLon(),
vp.getMinLat(), vp.getMaxLat() );
GTRenderer renderer = new StreamingRenderer();
renderer.setContext(map);
try {
renderer.paint(g2, outputArea, mapArea );
} catch(Exception e ) {
e.printStackTrace();
}
If i am only adding one layer to the context, it works as expected, but if am
adding two ore more layers, area-shapes get messed up, points on lines appear
or lines are rearranged to area-borders.
What am i doing wrong?
Thanks for your help.
Julian
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