Hi all,
I have two questions related to the size of the point symbolizers.
1. Is there a way to set the size dependending on the zoom of the map. I
mean: my point size has a physical meaning so I need it to cover always the
same area of the map.
2. When I capture an image of the map and its features the size of the
symbolizers on the image is not the same as the one on the screen. Anyone
knows how to solve this issue? The same happend with the TextSymbolizer
that labels the feature.
(Bellow I have pasted simplified examples of how I create the point
symbolizer and the image)
Thanks in advance,
Anna
a) Point Symbolizer:
Stroke stroke = sf.createStroke(ff.literal(colorLine), ff.literal(sizeLine),
ff.literal((float) colorLine.getAlpha() / 255), null, null,
null, null, null, null);
fill = sf.createFill(ff.literal(color), ff.literal((float)
color.getAlpha() / 255));
Mark mark = sf.getCircleMark();
mark.setFill(fill);
mark.setStroke(stroke);
Graphic graphic = sf.createDefaultGraphic();
graphic.graphicalSymbols().clear();
graphic.graphicalSymbols().add(mark);
graphic.setSize(ff.literal(size));
PointSymbolizer pointSymbolizer = sb.createPointSymbolizer(graphic,
"the_geom");
b) Image capture:
Rectangle imageBounds = null;
ReferencedEnvelope mapBounds = null;
try {
mapBounds = mapContent.getMaxBounds();
double heightToWidth = mapBounds.getSpan(1) /
mapBounds.getSpan(0);
imageBounds = new Rectangle(0, 0, imageWidth, (int)
Math.round(imageWidth * heightToWidth));
} catch (Exception e) {
// failed to access map layers
throw new RuntimeException(e);
}
BufferedImage image = new BufferedImage(imageBounds.width,
imageBounds.height, BufferedImage.TYPE_INT_RGB);
Graphics2D gr = image.createGraphics();
gr.setPaint(Color.WHITE);
gr.fill(imageBounds);
try {
renderer.paint(gr, imageBounds, mapBounds);
File fileToSave = new File(file);
ImageIO.write(image, "jpeg", fileToSave);
} catch (IOException e) {
throw new RuntimeException(e);
}
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