예제 #1
0
 /**
  * Align given bounds with square size and expand by given fraction
  *
  * @param bounds
  * @param size
  * @return
  */
 private ReferencedEnvelope align(ReferencedEnvelope bounds, double size, double expand) {
   bounds = new ReferencedEnvelope(bounds);
   bounds.expandBy(expand * size);
   double x = offset(bounds.getLowerCorner(), 0, size);
   double y = offset(bounds.getLowerCorner(), 1, size);
   bounds.translate(-x, -y);
   return bounds;
 }
예제 #2
0
  @Override
  public void onClick() {
    ExtendedLayerEditor cadastreObjectLayer = getTargetCadastreObjectLayer();

    if (cadastreObjectLayer.getFeatureCollection().size() > 0) {
      ReferencedEnvelope envelope = cadastreObjectLayer.getFeatureCollection().getBounds();
      envelope.expandBy(10);
      this.getMapControl().setDisplayArea(envelope);
    }
    super.onClick();
  }
예제 #3
0
  /** Zooms the map to the selected object and highlight it in the map. */
  @Override
  public void onSelectionConfirmed() {
    if (this.getSelectedElement() == null) {
      return;
    }
    SpatialSearchResultBean selectedObj = (SpatialSearchResultBean) this.getSelectedElement();
    try {
      Geometry geom = PojoFeatureSource.getWkbReader().read(selectedObj.getTheGeom());

      // Select the object on the map
      this.map.clearSelectedFeatures();
      this.map.selectFeature(selectedObj.getId(), geom);

      // Zoom to map to the object
      ReferencedEnvelope boundsToZoom = JTS.toEnvelope(geom);
      boundsToZoom.expandBy(this.searchByObject.getZoomInBuffer().doubleValue());
      this.map.setDisplayArea(boundsToZoom);
    } catch (ParseException ex) {
      Messaging.getInstance().show(GisMessage.LEFT_PANEL_FIND_ERROR);
      org.sola.common.logging.LogUtility.log(GisMessage.LEFT_PANEL_FIND_ERROR, ex);
    }
  }
  /**
   * This method tries to automatically determine SRS, bounding box and output size based on the
   * layers provided by the user and any other parameters.
   *
   * <p>If bounds are not specified by the user, they are automatically se to the union of the
   * bounds of all layers.
   *
   * <p>The size of the output image defaults to 512 pixels, the height is automatically determined
   * based on the width to height ratio of the requested layers. This is also true if either height
   * or width are specified by the user. If both height and width are specified by the user, the
   * automatically determined bounding box will be adjusted to fit inside these bounds.
   *
   * <p>General idea 1) Figure out whether SRS has been specified, fall back to EPSG:4326 2)
   * Determine whether all requested layers use the same SRS, - if so, try to do bounding box
   * calculations in native coordinates 3) Aggregate the bounding boxes (in EPSG:4326 or native) 4a)
   * If bounding box has been specified, adjust height of image to match 4b) If bounding box has not
   * been specified, but height has, adjust bounding box
   */
  public static void autoSetBoundsAndSize(GetMapRequest getMap) {
    // Get the layers
    List<MapLayerInfo> layers = getMap.getLayers();

    /** 1) Check what SRS has been requested */
    String reqSRS = getMap.getSRS();

    // if none, try to determine which SRS to use
    // and keep track of whether we can use native all the way
    boolean useNativeBounds = true;
    if (reqSRS == null) {
      reqSRS = guessCommonSRS(layers);
      forceSRS(getMap, reqSRS);
    }

    /** 2) Compare requested SRS */
    for (int i = 0; useNativeBounds && i < layers.size(); i++) {
      if (layers.get(i) != null) {
        String layerSRS = layers.get(i).getSRS();
        useNativeBounds =
            reqSRS.equalsIgnoreCase(layerSRS)
                && layers.get(i).getResource().getNativeBoundingBox() != null;
      } else {
        useNativeBounds = false;
      }
    }

    CoordinateReferenceSystem reqCRS;
    try {
      reqCRS = CRS.decode(reqSRS);
    } catch (Exception e) {
      throw new ServiceException(e);
    }

    // Ready to determine the bounds based on the layers, if not specified
    Envelope aggregateBbox = getMap.getBbox();
    boolean specifiedBbox = true;

    // If bbox is not specified by request
    if (aggregateBbox == null) {
      specifiedBbox = false;

      // Get the bounding box from the layers
      for (int i = 0; i < layers.size(); i++) {
        MapLayerInfo layerInfo = layers.get(i);
        ReferencedEnvelope curbbox;
        try {
          curbbox = layerInfo.getLatLongBoundingBox();
          if (useNativeBounds) {
            ReferencedEnvelope nativeBbox = layerInfo.getBoundingBox();
            if (nativeBbox == null) {
              try {
                CoordinateReferenceSystem nativeCrs = layerInfo.getCoordinateReferenceSystem();
                nativeBbox = curbbox.transform(nativeCrs, true);
              } catch (Exception e) {
                throw new ServiceException("Best effort native bbox computation failed", e);
              }
            }
            curbbox = nativeBbox;
          }
        } catch (Exception e) {
          throw new RuntimeException(e);
        }
        if (aggregateBbox != null) {
          aggregateBbox.expandToInclude(curbbox);
        } else {
          aggregateBbox = curbbox;
        }
      }

      ReferencedEnvelope ref = null;
      // Reproject back to requested SRS if we have to
      if (!useNativeBounds && !reqSRS.equalsIgnoreCase(SRS)) {
        try {
          ref = new ReferencedEnvelope(aggregateBbox, CRS.decode("EPSG:4326"));
          aggregateBbox = ref.transform(reqCRS, true);
        } catch (ProjectionException pe) {
          ref.expandBy(-1 * ref.getWidth() / 50, -1 * ref.getHeight() / 50);
          try {
            aggregateBbox = ref.transform(reqCRS, true);
          } catch (FactoryException e) {
            e.printStackTrace();
          } catch (TransformException e) {
            e.printStackTrace();
          }
          // And again...
        } catch (NoSuchAuthorityCodeException e) {
          e.printStackTrace();
        } catch (TransformException e) {
          e.printStackTrace();
        } catch (FactoryException e) {
          e.printStackTrace();
        }
      }
    }

    // Just in case
    if (aggregateBbox == null) {
      forceSRS(getMap, DefaultWebMapService.SRS);
      aggregateBbox = DefaultWebMapService.BBOX;
    }

    // Start the processing of adjust either the bounding box
    // or the pixel height / width

    double bbheight = aggregateBbox.getHeight();
    double bbwidth = aggregateBbox.getWidth();
    double bbratio = bbwidth / bbheight;

    double mheight = getMap.getHeight();
    double mwidth = getMap.getWidth();

    if (mheight > 0.5 && mwidth > 0.5 && specifiedBbox) {
      // This person really doesnt want our help,
      // we'll warp it any way they like it...
    } else {
      if (mheight > 0.5 && mwidth > 0.5) {
        // Fully specified, need to adjust bbox
        double mratio = mwidth / mheight;
        // Adjust bounds to be less than ideal to meet spec
        if (bbratio > mratio) {
          // Too wide, need to increase height of bb
          double diff = ((bbwidth / mratio) - bbheight) / 2;
          aggregateBbox.expandBy(0, diff);
        } else {
          // Too tall, need to increase width of bb
          double diff = ((bbheight * mratio) - bbwidth) / 2;
          aggregateBbox.expandBy(diff, 0);
        }

        adjustBounds(reqSRS, aggregateBbox);

      } else if (mheight > 0.5) {
        mwidth = bbratio * mheight;
      } else {
        if (mwidth > 0.5) {
          mheight = (mwidth / bbratio >= 1) ? mwidth / bbratio : 1;
        } else {
          if (bbratio > 1) {
            mwidth = MAX_SIDE;
            mheight = (mwidth / bbratio >= 1) ? mwidth / bbratio : 1;
          } else {
            mheight = MAX_SIDE;
            mwidth = (mheight * bbratio >= 1) ? mheight * bbratio : 1;
          }

          // make sure OL output height is sufficient to show the OL scale bar fully
          if (mheight < MIN_OL_HEIGHT
              && ("application/openlayers".equalsIgnoreCase(getMap.getFormat())
                  || "openlayers".equalsIgnoreCase(getMap.getFormat()))) {
            mheight = MIN_OL_HEIGHT;
            mwidth = (mheight * bbratio >= 1) ? mheight * bbratio : 1;
          }
        }
      }

      // Actually set the bounding box and size of image
      getMap.setBbox(aggregateBbox);
      getMap.setWidth((int) mwidth);
      getMap.setHeight((int) mheight);
    }
  }