protected static boolean isServiceVisible(DrawContext dc, PlaceNameService placeNameService) {
    //noinspection SimplifiableIfStatement
    if (!placeNameService.isEnabled()) return false;

    return (dc.getVisibleSector() != null)
        && placeNameService.getMaskingSector().intersects(dc.getVisibleSector());
    //
    //        return
    // placeNameService.getExtent(dc).intersects(dc.getView().getFrustumInModelCoordinates());
  }
  protected static boolean isTileVisible(
      DrawContext dc, Tile tile, double minDistanceSquared, double maxDistanceSquared) {
    if (!tile.getSector().intersects(dc.getVisibleSector())) return false;

    View view = dc.getView();
    Position eyePos = view.getEyePosition();
    if (eyePos == null) return false;

    Angle lat =
        clampAngle(
            eyePos.getLatitude(),
            tile.getSector().getMinLatitude(),
            tile.getSector().getMaxLatitude());
    Angle lon =
        clampAngle(
            eyePos.getLongitude(),
            tile.getSector().getMinLongitude(),
            tile.getSector().getMaxLongitude());
    Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
    double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
    //noinspection RedundantIfStatement
    if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;

    return true;
  }
    protected boolean isNavSectorVisible(
        DrawContext dc, double minDistanceSquared, double maxDistanceSquared) {
      if (!navSector.intersects(dc.getVisibleSector())) return false;

      View view = dc.getView();
      Position eyePos = view.getEyePosition();
      if (eyePos == null) return false;

      // check for eyePos over globe
      if (Double.isNaN(eyePos.getLatitude().getDegrees())
          || Double.isNaN(eyePos.getLongitude().getDegrees())) return false;

      Angle lat =
          clampAngle(eyePos.getLatitude(), navSector.getMinLatitude(), navSector.getMaxLatitude());
      Angle lon =
          clampAngle(
              eyePos.getLongitude(), navSector.getMinLongitude(), navSector.getMaxLongitude());
      Vec4 p = dc.getGlobe().computePointFromPosition(lat, lon, 0d);
      double distSquared = dc.getView().getEyePoint().distanceToSquared3(p);
      //noinspection RedundantIfStatement
      if (minDistanceSquared > distSquared || maxDistanceSquared < distSquared) return false;

      return true;
    }
예제 #4
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  protected void drawMany(DrawContext dc, Iterable<? extends WWIcon> icons, Layer layer) {
    if (dc == null) {
      String msg = Logging.getMessage("nullValue.DrawContextIsNull");
      Logging.logger().severe(msg);
      throw new IllegalArgumentException(msg);
    }

    if (dc.getVisibleSector() == null) return;

    SectorGeometryList geos = dc.getSurfaceGeometry();
    //noinspection RedundantIfStatement
    if (geos == null) return;

    if (icons == null) {
      String msg = Logging.getMessage("nullValue.IconIterator");
      Logging.logger().severe(msg);
      throw new IllegalArgumentException(msg);
    }

    Iterator<? extends WWIcon> iterator = icons.iterator();

    if (!iterator.hasNext()) return;

    double horizon = dc.getView().getHorizonDistance();

    while (iterator.hasNext()) {
      WWIcon icon = iterator.next();
      if (!isIconValid(icon, true)) {
        // Record feedback data for this WWIcon if feedback is enabled.
        if (icon != null) this.recordFeedback(dc, icon, null, null);

        continue;
      }

      if (!icon.isVisible()) {
        // Record feedback data for this WWIcon if feedback is enabled.
        this.recordFeedback(dc, icon, null, null);

        continue;
      }

      // Determine Cartesian position from the surface geometry if the icon is near the surface,
      // otherwise draw it from the globe.
      Position pos = icon.getPosition();
      Vec4 iconPoint = null;
      if (pos.getElevation() < dc.getGlobe().getMaxElevation()
          && !this.isAlwaysUseAbsoluteElevation()) {
        iconPoint = dc.getSurfaceGeometry().getSurfacePoint(icon.getPosition());
      }

      if (iconPoint == null) {
        Angle lat = pos.getLatitude();
        Angle lon = pos.getLongitude();
        double elevation = pos.getElevation();
        if (!this.isAlwaysUseAbsoluteElevation()) elevation += dc.getGlobe().getElevation(lat, lon);
        iconPoint = dc.getGlobe().computePointFromPosition(lat, lon, elevation);
      }

      double eyeDistance =
          icon.isAlwaysOnTop() ? 0 : dc.getView().getEyePoint().distanceTo3(iconPoint);

      // X-PATCH Marjan
      // extracted skip conditions into an overrideable method
      if (!meetsRenderCriteria(dc, icon, iconPoint, eyeDistance)) {
        this.recordFeedback(dc, icon, iconPoint, null);
        continue;
      }
      // X-END

      // The icons aren't drawn here, but added to the ordered queue to be drawn back-to-front.
      dc.addOrderedRenderable(new OrderedIcon(icon, iconPoint, layer, eyeDistance, horizon));

      if (icon.isShowToolTip()) this.addToolTip(dc, icon, iconPoint);
    }
  }