Paul:
In what way are they not drawn correctly? The Drawer you found is for
drawing a legend symbol; did you intend to use Renderer? I am not sure of
the limitation of Drawer.
--
Jody Garnett
On Wed, Mar 1, 2023 at 1:11 AM <paul.m...@lfv.se> wrote:
> I’m trying to draw an example feature in a JFrame/JPanel while I’m
> creating a Style.
>
> When I draw the example feature, with the created style in the Frame, the
> feature is not drawn correctly when using hatched polygons, dashed lines,
> polygons filled with images etc.
>
> Other more simple styles are drawn correct.
>
> But in my map application all the features are drawn correctly together
> with the same styles.
>
> I create the styles for the example features exactly the same way as for
> the layers in my map application.
>
> Features with a style created from the SLD below is drawn correctly in
> the map but as a flat grey area in my SymViewer.
>
> What am I doing wrong?
>
>
>
> First I create a temporary Style from all the inputs and an empty
> BufferedImage, then I send it SymViewer who draws an example feature in a
> JPanel.
>
>
>
> Thanks,
>
> Paul
>
>
>
> -----------------------------------------------------------------------
>
> import java.awt.Color;
>
> import java.awt.Graphics;
>
> import java.awt.image.BufferedImage;
>
> import javax.swing.JFrame;
>
> import javax.swing.JPanel;
>
> import javax.swing.border.EmptyBorder;
>
> import org.geotools.map.legend.Drawer;
>
> import org.geotools.styling.Style;
>
> import org.locationtech.jts.geom.LineString;
>
> import org.locationtech.jts.geom.Point;
>
> import org.locationtech.jts.geom.Polygon;
>
> import org.opengis.feature.simple.SimpleFeature;
>
> import javax.swing.border.LineBorder;
>
> import java.awt.SystemColor;
>
>
>
> public class SymViewer extends JFrame {
>
> private static final long serialVersionUID = 1L;
>
> private JPanel contentPane;
>
> /**
>
> * Create the frame.
>
> */
>
> public SymViewer(BufferedImage img, Style style, String title,
> String titleExtra, String geoType) {
>
> setBackground(SystemColor.text);
>
> setTitle(title + " " + titleExtra);
>
> BufferedImage image = drawSymbolic(img, style, geoType);
>
> setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
>
> setBounds(0, 0, 439, 266);
>
> contentPane = new JPanel();
>
> contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
>
> setContentPane(contentPane);
>
> contentPane.setLayout(null);
>
> JPanel panel = new JPanel() {
>
> private static final long serialVersionUID = 1L;
>
> @Override
>
> protected void paintComponent(Graphics g) {
>
> super.paintComponent(g);
>
> g.drawImage(image, 0, 0, null);
>
> }
>
> };
>
> panel.setBorder(new LineBorder(new Color(0, 0, 0)));
>
> panel.setBounds(0, 0, 434, 261);
>
> panel.setBackground(SystemColor.menu);
>
> contentPane.add(panel);
>
> }
>
>
>
>
>
> private BufferedImage drawSymbolic(BufferedImage img, Style style,
> String geoType) {
>
> Drawer drawer = Drawer.create();
>
> SimpleFeature feature = null;
>
> if (geoType.contains("Line")){
>
> LineString line = drawer.line(new int[] { 15, 15, 400, 20,
> 15, 200 });
>
> feature = drawer.feature(line);
>
> }
>
> else if(geoType.contains("Polygon")) {
>
> Polygon p = drawer.polygon(new int[] { 15, 15, 400, 5, 400,
> 200, 15, 200, 15, 15 });
>
> feature = drawer.feature(p);
>
> }
>
> else if(geoType.contains("Point")) {
>
> Point p = drawer.point(216, 130);
>
> feature = drawer.feature(p);
>
> }
>
> if(feature != null) {
>
> drawer.drawDirect(img, feature, style);
>
> return img;
>
> }
>
> return null;
>
> }
>
> }
>
>
> ---------------------------------------------------------------------------------------
>
>
>
>
>
> SLD file:
>
>
>
> <?xml version="1.0" encoding="ISO-8859-1"?>
>
> <sld:StyledLayerDescriptor
>
> xsi:schemaLocation="http://www.opengis.net/sld
> StyledLayerDescriptor.xsd"
>
> xmlns="http://www.opengis.net/sld";
>
> xmlns:sld="http://www.opengis.net/sld";
>
> xmlns:ogc="http://www.opengis.net/ogc";
>
> xmlns:xlink="http://www.w3.org/1999/xlink";
>
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
>
> version="1.0.0">
>
> <sld:NamedLayer>
>
> <sld:Name>Graphic fill</sld:Name>
>
> <sld:UserStyle>
>
> <sld:Title>Graphic fill</sld:Title>
>
> <sld:FeatureTypeStyle>
>
> <sld:Rule>
>
> <sld:PolygonSymbolizer>
>
> <sld:Fill>
>
> <sld:GraphicFill>
>
> <sld:Graphic>
>
> <sld:ExternalGraphic>
>
> <sld:OnlineResource
>
> xlink:type="simple"
>
> xlink:href="magnus.png" />
>
> <sld:Format>image/png</sld:Format>
>
> </sld:ExternalGraphic>
>
> <sld:Size>93</sld:Size>
>
> </sld:Graphic>
>
> </sld:GraphicFill>
>
> </sld:Fill>
>
> </sld:PolygonSymbolizer>
>
> </sld:Rule>
>
> </sld:FeatureTypeStyle>
>
> </sld:UserStyle>
>
> </sld:NamedLayer>
>
> </sld:StyledLayerDescriptor>
>
>
> _______________________________________________
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>
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