/**
* This example shows how to obtain a color.
*
* @param g
* @param monitor
* @throws RenderException
*/
public void render(Graphics2D g, IProgressMonitor monitor) throws RenderException {
if (monitor == null) monitor = new NullProgressMonitor();
CsvReader reader = null;
try {
ILayer layer = getContext().getLayer();
IGeoResource resource = layer.findGeoResource(CSV.class);
if (resource == null) return;
ReferencedEnvelope bounds = getRenderBounds();
monitor.subTask("connecting");
CSV csv = resource.resolve(CSV.class, null);
// LOOK UP STYLE
IStyleBlackboard style = layer.getStyleBlackboard();
Color color = (Color) style.get(ColorStyle.ID);
// DATA TO WORLD
CoordinateReferenceSystem dataCRS = layer.getCRS();
CoordinateReferenceSystem worldCRS = context.getCRS();
MathTransform dataToWorld = CRS.findMathTransform(dataCRS, worldCRS, false);
// DRAW FILE
monitor.beginTask("csv render", csv.getSize());
reader = csv.reader();
reader.readHeaders();
int nameIndex = reader.getIndex("name");
Coordinate worldLocation = new Coordinate();
while (reader.readRecord()) {
Point point = CSV.getPoint(reader);
Coordinate dataLocation = point.getCoordinate();
try {
JTS.transform(dataLocation, worldLocation, dataToWorld);
} catch (TransformException e) {
continue;
}
if (bounds != null && !bounds.contains(worldLocation)) {
continue; // optimize!
}
java.awt.Point p = getContext().worldToPixel(worldLocation);
g.setColor(color);
g.fillRect(p.x - 2, p.y - 2, 6, 6);
g.setColor(Color.BLACK);
String name = reader.get(nameIndex);
g.drawString(name, p.x + 15, p.y + 15);
monitor.worked(1);
if (monitor.isCanceled()) break;
}
} catch (IOException e) {
throw new RenderException(e); // rethrow any exceptions encountered
} catch (FactoryException e) {
throw new RenderException(e); // rethrow any exceptions encountered
} finally {
if (reader != null) reader.close();
monitor.done();
}
}
private WMTSource getWmtSourceFromLayer(ILayer layer) {
IGeoResource resource = layer.findGeoResource(WMTSource.class);
if (resource != null) {
WMTSource wmtSource = null;
try {
wmtSource = resource.resolve(WMTSource.class, null);
return wmtSource;
} catch (Exception e) {
}
}
return null;
}
public boolean canAddLayer(ILayer layer) {
if (!layer.hasResource(Layer.class)) return false;
try {
if (!layer
.findGeoResource(Layer.class)
.parent(ProgressManager.instance().get())
.equals(getRenderContext().getGeoResource().parent(ProgressManager.instance().get())))
return false;
} catch (IOException e2) {
return false;
}
double opacity = Double.NaN;
ICompositeRenderContext context1 = (ICompositeRenderContext) context;
IRenderContext[] contexts =
context1.getContexts().toArray(new IRenderContext[context1.getContexts().size()]);
Arrays.sort(contexts);
List<Layer> owsLayers = new ArrayList<Layer>();
IService currentService;
try {
owsLayers.add(layer.getResource(Layer.class, new NullProgressMonitor()));
currentService = layer.getResource(IService.class, null);
} catch (IOException e1) {
WMSPlugin.log("", e1); // $NON-NLS-1$
return false;
}
for (IRenderContext renderContext : contexts) {
ILayer previousLayer = renderContext.getLayer();
try {
owsLayers.add(previousLayer.getResource(Layer.class, new NullProgressMonitor()));
IService previousService = previousLayer.getResource(IService.class, null);
if (currentService != previousService) {
return false;
}
} catch (IOException e) {
WMSPlugin.log("Error while retrieving service.", e); // $NON-NLS-1$
return false;
}
if (BasicWMSRenderer2.findRequestCRS(owsLayers, context.getCRS(), context.getMap()) == null)
return false;
Style style = (Style) previousLayer.getStyleBlackboard().get(SLDContent.ID);
if (style != null) {
opacity = SLDs.rasterOpacity(SLDs.rasterSymbolizer(style));
}
}
Style style = (Style) layer.getStyleBlackboard().get(SLDContent.ID);
if (style == null && Double.isNaN(opacity)) {
return true;
}
double result = SLDs.rasterOpacity(SLDs.rasterSymbolizer(style));
if (result == opacity) {
return true;
}
return false;
}