示例#1
0
 /**
  * Calculate appropriate square size.
  *
  * @param context
  * @param min
  * @return
  */
 private double size(MapGraphicContext context, Unit<?> unit, int min) {
   // Get scale
   double scale = context.getMap().getViewportModel().getScaleDenominator();
   // 1 km square?
   if (scale < 100000) return 1000.0;
   // 10 km square?
   if (scale < 1000000) return 10000.0;
   // 100 km square?
   if (scale < 10000000) return 100000.0;
   // 1000 km square?
   if (scale < 100000000) return 1000000.0;
   // 10000 km square
   return 100000000.0;
 }
示例#2
0
  @Override
  public void draw(MapGraphicContext context) {

    // Initialize
    ILayer graticule = context.getLayer();
    GraticuleStyle style = GraticuleStyle.getStyle(graticule);

    // Ensure CRS?
    if (graticule instanceof Layer) {
      // Initialize CRS?
      if (style.isInitCRS()) {
        // Only initialize once
        style.setInitCRS(false);
        // Apply CRS from context
        GraticuleCRSConfigurator.apply((Layer) graticule, context.getCRS());
      } else if (mismatch(graticule, style)) {
        // Apply CRS from
        GraticuleCRSConfigurator.apply((Layer) graticule, style.getCRS());
      }
    }

    // Sanity checks
    if (MAX_SCALE < context.getMap().getViewportModel().getScaleDenominator()) {
      graticule.setStatus(ILayer.ERROR);
      graticule.setStatusMessage(Messages.GraticuleGraphic_Maximum_Scale + MAX_SCALE);
      return;
    }
    Unit<?> unit = CRSUtilities.getUnit(graticule.getCRS().getCoordinateSystem());
    if (!SI.METER.equals(unit)) {
      graticule.setStatus(ILayer.ERROR);
      graticule.setStatusMessage(Messages.GraticuleGraphic_Illegal_CRS);
      return;
    }
    final IWorkbench workbench = PlatformUI.getWorkbench();
    if (workbench == null) return;

    // Start working on layer
    graticule.setStatus(ILayer.WORKING);
    graticule.setStatusMessage(null);

    // Get display to work on
    final Display display = workbench.getDisplay();

    // Set styles
    Font plain = GraticuleStyle.getFontStyle(context).getFont();
    Font bold = plain.deriveFont(Font.BOLD);

    // Initialize the graphics handle
    ViewportGraphics g = context.getGraphics();

    // Set font size
    g.setFont(bold);

    // Get bounds of viewport
    ReferencedEnvelope bounds = context.getViewportModel().getBounds();

    try {

      // Get square size limited to minimum size of 100 pixels
      double size = size(context, unit, 100);

      // Sanity check
      if (size < 100) return;

      // Convert square size to pixels
      int sx = (int) (size / context.getViewportModel().getPixelSize().x);
      int sy = (int) (size / context.getViewportModel().getPixelSize().y);

      // Make transform from Graticule to map CRS
      MathTransform transform = CRS.findMathTransform(graticule.getCRS(), context.getCRS(), false);

      // Transform bounds into Graticule CRS
      bounds = bounds.transform(graticule.getCRS(), true);

      // Get squares inside bounds
      SimpleFeatureIterator it = squares(bounds, size);

      // Draw one squares at the time (only top and left lines are drawn)
      while (it.hasNext()) {

        // Initialize states
        int i = 0;
        Point current = null;

        // Initialize lines
        List<Line> lines = new ArrayList<Line>(2);
        List<Label> labels = new ArrayList<Label>(2);

        // Get next geometry
        Geometry geom = (Geometry) it.next().getDefaultGeometry();

        // Get coordinates in graticule CRS
        Coordinate[] coords = geom.getCoordinates();

        // Get x-coordinate label from upper left corner
        String tx = getLabel(coords[0].x, size, unit, style);

        // Get y-coordinate label from lower left corner
        String ty = getLabel(coords[2].y, size, unit, style);

        // Insert gap with label?
        boolean vgap = isGap(tx, unit, style);
        boolean hgap = isGap(ty, unit, style);

        // Transform coordinates into Map CRS
        coords = JTS.transform(geom, transform).getCoordinates();

        // Create lines and labels for this square
        for (Coordinate c : coords) {

          // Build paths
          switch (i) {
            case 1:

              // -----------------------
              // Vertical line
              // -----------------------

              // Create line path
              current =
                  vert(
                      display,
                      g,
                      sy,
                      style.getLineWidth(),
                      current,
                      context.worldToPixel(c),
                      hgap,
                      vgap,
                      lines);

              // Add xx label?
              if (hgap) {
                labels.add(new Label(current, tx, vgap ? bold : plain));
                current = context.worldToPixel(c);
              }

              break;
            case 2:

              // -----------------------
              // Horizontal line
              // -----------------------

              // Create line path
              current =
                  horz(
                      display,
                      g,
                      sx,
                      style.getLineWidth(),
                      current,
                      context.worldToPixel(c),
                      vgap,
                      hgap,
                      lines);

              // Add yy label?
              if (vgap) {
                labels.add(new Label(current, ty, hgap ? bold : plain));
                current = context.worldToPixel(c);
              }

              break;

            default:
              current = context.worldToPixel(c);
              break;
          }
          i++;
        }

        // Draw lines
        for (Line line : lines) line.draw(g, style);

        // Draw labels?
        if (style.isShowLabels()) for (Label label : labels) label.draw(g, style);
      }

      // // Get lower left corner coordinates
      // int x = llc.x;
      // int y = llc.y;
      //
      // // Print borders
      // g.setColor(lc);
      // g.setStroke(ViewportGraphics.LINE_SOLID, 5);
      //
      // // Inner rectangle
      // g.drawRect(x + d + l, y + d + l, w - 2 * (d + l), h - 2 * (d + l));
      //
      // // Make white border
      // g.setColor(Color.WHITE);
      //
      // // Left
      // g.drawRect(x, y, d, h);
      // g.fillRect(x, y, d, h);
      //
      // // Bottom
      // g.drawRect(x, y, w, d);
      // g.fillRect(x, y, w, d);
      //
      // // Right
      // g.drawRect(x + w - d, y, d, h);
      // g.fillRect(x + w - d, y, d, h);
      //
      // // Top
      // g.drawRect(x, y + h - d, w, d);
      // g.fillRect(x, y + h - d, w, d);

    } catch (IOException ex) {
      MapGraphicPlugin.log(Messages.GraticuleGraphic_Error, ex);
    } catch (FactoryException ex) {
      MapGraphicPlugin.log(Messages.GraticuleGraphic_Error, ex);
    } catch (MismatchedDimensionException ex) {
      MapGraphicPlugin.log(Messages.GraticuleGraphic_Error, ex);
    } catch (TransformException ex) {
      MapGraphicPlugin.log(Messages.GraticuleGraphic_Error, ex);
    }

    // Finished working on layer
    graticule.setStatus(ILayer.DONE);
  }