public void selectRenderables(DrawContext dc, Sector vs) {
      // Select our renderables
      if (this.gridElements == null) createRenderables();

      boolean drawMetricLabels = getSizeInPixels(dc) > MIN_CELL_SIZE_PIXELS * 2;
      String graticuleType = getTypeFor((int) this.size);
      for (GridElement ge : this.gridElements) {
        if (ge.isInView(dc, vs)) {
          if (ge.type.equals(GridElement.TYPE_LINE_NORTH) && this.isNorthNeighborInView(dc))
            continue;
          if (ge.type.equals(GridElement.TYPE_LINE_EAST) && this.isEastNeighborInView(dc)) continue;

          if (drawMetricLabels)
            metricScaleSupport.computeMetricScaleExtremes(
                this.UTMZone, this.hemisphere, ge, this.size * 10);
          addRenderable(ge.renderable, graticuleType);
        }
      }

      if (getSizeInPixels(dc) <= MIN_CELL_SIZE_PIXELS * 2) return;

      // Select grid renderables
      if (this.squareGrid == null)
        this.squareGrid =
            new SquareGrid(
                this.UTMZone,
                this.hemisphere,
                this.UTMZoneSector,
                this.SWEasting,
                this.SWNorthing,
                this.size);
      if (this.squareGrid.isInView(dc)) {
        this.squareGrid.selectRenderables(dc, vs);
      } else this.squareGrid.clearRenderables();
    }
    public void selectRenderables(DrawContext dc, Sector vs) {
      // Select our renderables
      if (this.gridElements == null) createRenderables();

      int gridStep = (int) this.size / 10;
      boolean drawMetricLabels = getSizeInPixels(dc) > MIN_CELL_SIZE_PIXELS * 4 * 1.7;
      String graticuleType = getTypeFor(gridStep);

      for (GridElement ge : this.gridElements) {
        if (ge.isInView(dc, vs)) {
          if (drawMetricLabels)
            metricScaleSupport.computeMetricScaleExtremes(
                this.UTMZone, this.hemisphere, ge, this.size);

          addRenderable(ge.renderable, graticuleType);
        }
      }

      if (getSizeInPixels(dc) <= MIN_CELL_SIZE_PIXELS * 4 * 2) return;

      // Select sub grids renderables
      if (this.subGrids == null) createSubGrids();
      for (SquareGrid sg : this.subGrids) {
        if (sg.isInView(dc)) {
          sg.selectRenderables(dc, vs);
        } else sg.clearRenderables();
      }
    }
  /**
   * Select the visible grid elements
   *
   * @param dc the current <code>DrawContext</code>.
   */
  protected void selectRenderables(DrawContext dc) {
    if (dc == null) {
      String message = Logging.getMessage("nullValue.DrawContextIsNull");
      Logging.logger().severe(message);
      throw new IllegalArgumentException(message);
    }
    Sector vs = dc.getVisibleSector();
    OrbitView view = (OrbitView) dc.getView();
    // Compute labels offset from view center
    Position centerPos = view.getCenterPosition();
    Double pixelSizeDegrees =
        Angle.fromRadians(
                view.computePixelSizeAtDistance(view.getZoom())
                    / dc.getGlobe().getEquatorialRadius())
            .degrees;
    Double labelOffsetDegrees = pixelSizeDegrees * view.getViewport().getWidth() / 4;
    Position labelPos =
        Position.fromDegrees(
            centerPos.getLatitude().degrees - labelOffsetDegrees,
            centerPos.getLongitude().degrees - labelOffsetDegrees,
            0);
    Double labelLatDegrees = labelPos.getLatitude().normalizedLatitude().degrees;
    labelLatDegrees = Math.min(Math.max(labelLatDegrees, -76), 78);
    labelPos =
        new Position(
            Angle.fromDegrees(labelLatDegrees), labelPos.getLongitude().normalizedLongitude(), 0);

    if (vs != null) {
      for (GridElement ge : this.gridElements) {
        if (ge.isInView(dc)) {
          if (ge.renderable instanceof GeographicText) {
            GeographicText gt = (GeographicText) ge.renderable;
            if (labelPos.getLatitude().degrees < 72
                || "*32*34*36*".indexOf("*" + gt.getText() + "*") == -1) {
              // Adjust label position according to eye position
              Position pos = gt.getPosition();
              if (ge.type.equals(GridElement.TYPE_LATITUDE_LABEL))
                pos =
                    Position.fromDegrees(
                        pos.getLatitude().degrees,
                        labelPos.getLongitude().degrees,
                        pos.getElevation());
              else if (ge.type.equals(GridElement.TYPE_LONGITUDE_LABEL))
                pos =
                    Position.fromDegrees(
                        labelPos.getLatitude().degrees,
                        pos.getLongitude().degrees,
                        pos.getElevation());

              gt.setPosition(pos);
            }
          }

          this.graticuleSupport.addRenderable(ge.renderable, GRATICULE_UTM);
        }
      }
      // System.out.println("Total elements: " + count + " visible sector: " + vs);
    }
  }