C++ SpatialDataView::getActiveLayer方法代码示例

 int isLayerActive(Layer* pLayer)
 {
    if (pLayer == NULL)
    {
       setLastError(SIMPLE_BAD_PARAMS);
       return 0;
    }
    SpatialDataView* pView = dynamic_cast<SpatialDataView*>(pLayer->getView());
    if (pView == NULL)
    {
       setLastError(SIMPLE_WRONG_VIEW_TYPE);
       return 0;
    }
    setLastError(SIMPLE_NO_ERROR);
    return static_cast<int>(pView->getActiveLayer() == pLayer);
 }

bool ChangeUpDirection::execute(PlugInArgList* pInArgList, PlugInArgList* pOutArgList)
{
   if (pInArgList == NULL || pOutArgList == NULL)
   {
      return false;
   }
   ProgressTracker progress(pInArgList->getPlugInArgValue<Progress>(Executable::ProgressArg()),
      "Rotating data.", "app", "{11adadb9-c133-49de-8cf5-a16372da2578}");

   RasterElement* pData = pInArgList->getPlugInArgValue<RasterElement>(Executable::DataElementArg());
   if (pData == NULL)
   {
      progress.report("No data element specified.", 0, ERRORS, true);
      return false;
   }
   bool display = false;
   if (!pInArgList->getPlugInArgValue("Display Results", display))
   {
      progress.report("Unsure if results should be displayed. Invalid argument.", 0, ERRORS, true);
      return false;
   }
   double rotation = 0.0;
   SpatialDataView* pOrigView = NULL;
   if (isBatch())
   {
      if (!pInArgList->getPlugInArgValue("Rotation", rotation))
      {
         progress.report("No rotation specified.", 0, ERRORS, true);
         return false;
      }
   }
   else
   {
      pOrigView = pInArgList->getPlugInArgValue<SpatialDataView>(Executable::ViewArg());
      if (pOrigView == NULL)
      {
         progress.report("No view specified.", 0, ERRORS, true);
         return false;
      }
      GraphicLayer* pLayer = dynamic_cast<GraphicLayer*>(pOrigView->getActiveLayer());
      if (pLayer == NULL)
      {
         pLayer = dynamic_cast<GraphicLayer*>(pOrigView->getTopMostLayer(ANNOTATION));
      }
      GraphicObject* pArrow = NULL;
      if (pLayer != NULL)
      {
         std::list<GraphicObject*> objects;
         pLayer->getObjects(ARROW_OBJECT, objects);
         if (!objects.empty())
         {
            pArrow = objects.back();
         }
         if (objects.size() > 1)
         {
            progress.report("Multiple arrow objects found. Using the most recently added one.", 0, WARNING, true);
         }
      }
      if (pArrow == NULL)
      {
         progress.report("Unable to locate up direction. Add an arrow annotation and re-run this plugin.",
            0, ERRORS, true);
         return false;
      }
      LocationType ur = pArrow->getUrCorner();
      LocationType ll = pArrow->getLlCorner();
      double xlen = ur.mX - ll.mX;
      double ylen = ur.mY - ll.mY;

      // Initial rotatation value. The 90 degrees is due to the difference
      // in the "0 point" (right vs. up). Also account for explicit rotation
      // of the annotation object. Convert this to radians.
      rotation = GeoConversions::convertDegToRad(90 + pArrow->getRotation());

      // Determine a rotation adjustment based on the bounding box
      rotation += atan2(ylen, xlen);
   }

   progress.report("Rotating data.", 10, NORMAL);
   ModelResource<RasterElement> pRotated(pData->copyShallow(pData->getName() + "_rotated", pData->getParent()));
   if (pRotated.get() == NULL)
   {
      progress.report("Unable to create destination raster element.", 0, ERRORS, true);
      return false;
   }

   int defaultBadValue(0);  // the rotate method will handle setting the default bad values into the rotated raster
   if (!RasterUtilities::rotate(pRotated.get(), pData, rotation, defaultBadValue,
      INTERP_NEAREST_NEIGHBOR, progress.getCurrentProgress(), &mAbort))
   {
      // error message already reported by rotate()
      return false;
   }
   pOutArgList->setPlugInArgValue("Rotated Element", pRotated.get());

   if (display)
   {
      SpatialDataWindow* pWindow = static_cast<SpatialDataWindow*>(
         Service<DesktopServices>()->createWindow(pRotated->getName(), SPATIAL_DATA_WINDOW));
      SpatialDataView* pView = (pWindow == NULL) ? NULL : pWindow->getSpatialDataView();
//.........这里部分代码省略.........

 Layer* getLayer(const char* pName, const char* pType)
 {
    Layer* pLayer = NULL;
    const std::string name(pName == NULL ? std::string() : pName);
    const std::string type(pType == NULL ? std::string() : pType);
    SessionItem* pSessionItem = Service<SessionManager>()->getSessionItem(name);
    if (pSessionItem != NULL)
    {
       pLayer = dynamic_cast<Layer*>(pSessionItem);
       if (pLayer == NULL || (!type.empty() && !pLayer->isKindOf(type)))
       {
          setLastError(SIMPLE_WRONG_TYPE);
          return NULL;
       }
    }
    else
    {
       std::vector<std::string> id = splitIdentifier(name);
       SpatialDataView* pView = static_cast<SpatialDataView*>(getView(id.size() == 0 ? NULL : id.front().c_str(),
          TypeConverter::toString<SpatialDataView>()));
       LayerList* pLayerList = (pView == NULL) ? NULL : pView->getLayerList();
       if (pLayerList == NULL)
       {
          setLastError(SIMPLE_NOT_FOUND);
          return NULL;
       }
       if (id.size() < 2)
       {
          if (!type.empty() && type == TypeConverter::toString<RasterLayer>())
          {
             pLayer = pLayerList->getLayer(RASTER, pLayerList->getPrimaryRasterElement());
          }
          else
          {
             pLayer = pView->getActiveLayer();
             if (pLayer != NULL && !type.empty() && !pLayer->isKindOf(type))
             {
                pLayer = NULL;
             }
             if (pLayer == NULL)
             {
                if (type.empty())
                {
                   pLayer = pView->getTopMostLayer();
                }
                else
                {
                   pLayer = pView->getTopMostLayer(StringUtilities::fromDisplayString<LayerType>(type));
                }
             }
          }
       }
       if (pLayer == NULL)
       {
          std::vector<Layer*> layers;
          pLayerList->getLayers(layers);
          for (std::vector<Layer*>::reverse_iterator layer = layers.rbegin();
             layer != layers.rend();
             ++layer)
          {
             if ((type.empty() || (*layer)->isKindOf(type)) && 
                (id.empty() || (*layer)->getName() == id.back() || (*layer)->getDisplayName() == id.back()))
             {
                pLayer = *layer;
                break;
             }
          }
       }
       if (pLayer == NULL)
       {
          setLastError(SIMPLE_NOT_FOUND);
          return NULL;
       }
    }
    setLastError(SIMPLE_NO_ERROR);
    return pLayer;
 }