/// <summary>
/// Here we need to create the lines of sight and determine is a target can be seen or not
/// </summary>
internal override async Task CreateMapElement()
{
try
{
await ReadSelectedLayers();
if (string.IsNullOrWhiteSpace(SelectedSurfaceName))
{
ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show(VisibilityLibrary.Properties.Resources.MsgSurfaceLayerNotFound,
VisibilityLibrary.Properties.Resources.CaptionError);
}
if (!CanCreateElement || MapView.Active == null || MapView.Active.Map == null)
{
return;
}
if ((LLOS_ObserversInExtent.Any() || ObserverAddInPoints.Any()) &&
LLOS_TargetsInExtent.Any() || TargetAddInPoints.Any())
{
bool success = await ExecuteVisibilityLLOS();
if (!success)
{
MessageBox.Show("LLOS computations did not complete correctly.\nPlease check your parameters and try again.",
VisibilityLibrary.Properties.Resources.CaptionError);
}
}
else
{
ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show(VisibilityLibrary.Properties.Resources.OutOfExtentMsg, VisibilityLibrary.Properties.Resources.OutOfExtentHeader);
}
DeactivateTool(VisibilityMapTool.ToolId);
OnMapPointToolDeactivated(null);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
//await base.CreateMapElement();
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show(VisibilityLibrary.Properties.Resources.ExceptionSomethingWentWrong,
VisibilityLibrary.Properties.Resources.CaptionError);
}
finally
{
IsRunning = false;
ClearLLOSCollections();
}
}
/// <summary>
/// Here we need to create the lines of sight and determine is a target can be seen or not
/// Visualize the visible targets with GREEN circles
/// Visualize the non visible targets with RED circles
/// Visualize the number of observers that can see a target with a label #
/// Visualize an observer that can see no targets with a RED circle on top of a BLUE circle
/// Visualize an observer that can see at least one target with a GREEN circle on top of a BLUE circle
/// </summary>
internal override void CreateMapElement()
{
try
{
IsRunning = true;
IPolyline longestLine = new PolylineClass();
ReadSelectedLayerPoints();
if (!CanCreateElement || ArcMap.Document == null || ArcMap.Document.FocusMap == null || string.IsNullOrWhiteSpace(SelectedSurfaceName))
{
return;
}
if ((LLOS_ObserversInExtent.Any() || ObserverAddInPoints.Any()) &&
LLOS_TargetsInExtent.Any() || TargetAddInPoints.Any())
{
// take your observer and target points and get lines of sight
var observerPoints = new ObservableCollection <AddInPoint>(LLOS_ObserversInExtent.Select(x => x.AddInPoint).Union(ObserverInExtentPoints));
var targetPoints = new ObservableCollection <AddInPoint>(LLOS_TargetsInExtent.Select(x => x.AddInPoint).Union(TargetInExtentPoints));
var surface = GetSurfaceFromMapByName(ArcMap.Document.FocusMap, SelectedSurfaceName);
if (surface == null)
{
return;
}
ILayer surfaceLayer = GetLayerFromMapByName(ArcMap.Document.FocusMap, SelectedSurfaceName);
// Issue warning if layer is ImageServerLayer
if (surfaceLayer is IImageServerLayer)
{
MessageBoxResult mbr = MessageBox.Show(VisibilityLibrary.Properties.Resources.MsgLayerIsImageService,
VisibilityLibrary.Properties.Resources.CaptionLayerIsImageService, MessageBoxButton.YesNo);
if (mbr == MessageBoxResult.No)
{
System.Windows.MessageBox.Show(VisibilityLibrary.Properties.Resources.MsgTryAgain, VisibilityLibrary.Properties.Resources.MsgCalcCancelled);
return;
}
}
// Determine if selected surface is projected or geographic
var geoDataset = surfaceLayer as IGeoDataset;
if (geoDataset == null)
{
System.Windows.MessageBox.Show(VisibilityLibrary.Properties.Resources.MsgTryAgain, VisibilityLibrary.Properties.Resources.CaptionError);
return;
}
SelectedSurfaceSpatialRef = geoDataset.SpatialReference;
if (SelectedSurfaceSpatialRef is IGeographicCoordinateSystem)
{
MessageBox.Show(VisibilityLibrary.Properties.Resources.LLOSUserPrompt, VisibilityLibrary.Properties.Resources.LLOSUserPromptCaption);
return;
}
if (ArcMap.Document.FocusMap.SpatialReference.FactoryCode != geoDataset.SpatialReference.FactoryCode)
{
MessageBox.Show(VisibilityLibrary.Properties.Resources.LOSDataFrameMatch, VisibilityLibrary.Properties.Resources.LOSSpatialReferenceCaption);
return;
}
SelectedSurfaceSpatialRef = geoDataset.SpatialReference;
var geoBridge = (IGeoDatabaseBridge2) new GeoDatabaseHelperClass();
IPoint pointObstruction = null;
IPolyline polyVisible = null;
IPolyline polyInvisible = null;
bool targetIsVisible = false;
double finalObserverOffset = GetOffsetInZUnits(ObserverOffset.Value, surface.ZFactor, OffsetUnitType);
double finalTargetOffset = GetOffsetInZUnits(TargetOffset.Value, surface.ZFactor, OffsetUnitType);
var DictionaryTargetObserverCount = new Dictionary <IPoint, int>();
foreach (var observerPoint in observerPoints)
{
// keep track of visible targets for this observer
var CanSeeAtLeastOneTarget = false;
var z1 = surface.GetElevation(observerPoint.Point) + finalObserverOffset;
if (double.IsNaN(z1))
{
System.Windows.MessageBox.Show(VisibilityLibrary.Properties.Resources.LLOSPointsOutsideOfSurfaceExtent, VisibilityLibrary.Properties.Resources.MsgCalcCancelled);
return;
}
foreach (var targetPoint in targetPoints)
{
var z2 = surface.GetElevation(targetPoint.Point) + finalTargetOffset;
if (double.IsNaN(z2))
{
System.Windows.MessageBox.Show(VisibilityLibrary.Properties.Resources.LLOSPointsOutsideOfSurfaceExtent, VisibilityLibrary.Properties.Resources.MsgCalcCancelled);
return;
}
var fromPoint = new PointClass()
{
Z = z1, X = observerPoint.Point.X, Y = observerPoint.Point.Y, ZAware = true
} as IPoint;
var toPoint = new PointClass()
{
Z = z2, X = targetPoint.Point.X, Y = targetPoint.Point.Y, ZAware = true
} as IPoint;
geoBridge.GetLineOfSight(surface, fromPoint, toPoint,
out pointObstruction, out polyVisible, out polyInvisible, out targetIsVisible, false, false);
var pcol = new PolylineClass() as IPointCollection;
pcol.AddPoint(fromPoint);
pcol.AddPoint(toPoint);
IPolyline pcolPolyline = pcol as IPolyline;
longestLine = (longestLine != null && longestLine.Length < pcolPolyline.Length) ? pcolPolyline : longestLine;
// set the flag if we can see at least one target
if (targetIsVisible)
{
CanSeeAtLeastOneTarget = true;
// update target observer count
UpdateTargetObserverCount(DictionaryTargetObserverCount, targetPoint.Point);
}
// First Add "SightLine" so it appears behind others
// Black = Not visible -or- White = Visible
if (targetIsVisible)
{
AddGraphicToMap(pcolPolyline, new RgbColorClass()
{
RGB = 0xFFFFFF
}, false,
size: 6); // white line
}
else
{
AddGraphicToMap(pcolPolyline, new RgbColorClass()
{
RGB = 0x000000
}, false,
size: 6); // black line
}
if (polyVisible != null)
{
AddGraphicToMap(polyVisible, new RgbColorClass()
{
Green = 255
}, size: 5);
}
if (polyInvisible != null)
{
AddGraphicToMap(polyInvisible, new RgbColorClass()
{
Red = 255
}, size: 3);
}
if (polyVisible == null && polyInvisible == null)
{
if (targetIsVisible)
{
AddGraphicToMap(pcol as IPolyline, new RgbColorClass()
{
Green = 255
}, size: 3);
}
else
{
AddGraphicToMap(pcol as IPolyline, new RgbColorClass()
{
Red = 255
}, size: 3);
}
}
}
// visualize observer
// add blue dot
AddGraphicToMap(observerPoint.Point, new RgbColorClass()
{
Blue = 255
}, size: 10);
if (CanSeeAtLeastOneTarget)
{
// add green dot
AddGraphicToMap(observerPoint.Point, new RgbColorClass()
{
Green = 255
});
}
else
{
// add red dot
AddGraphicToMap(observerPoint.Point, new RgbColorClass()
{
Red = 255
});
}
}
VisualizeTargets(DictionaryTargetObserverCount, targetPoints);
if ((ObserverInExtentPoints.Any() || LLOS_ObserversInExtent.Any()) &&
(TargetInExtentPoints.Any() || LLOS_TargetsInExtent.Any()))
{
ZoomToExtent(longestLine);
}
DisplayOutOfExtentMsg();
//display points present out of extent
var colorObserver = new RgbColorClass()
{
Blue = 255
};
var colorTarget = new RgbColorClass()
{
Red = 255
};
var colorObserverBorder = new RgbColorClass()
{
Red = 255, Blue = 255, Green = 255
};
var colorTargetBorder = new RgbColorClass()
{
Red = 0, Blue = 0, Green = 0
};
var observerOutOfExtent = new ObservableCollection <AddInPoint>(LLOS_ObserversOutOfExtent.Select(x => x.AddInPoint).Union(ObserverOutExtentPoints));
foreach (var point in observerOutOfExtent)
{
AddGraphicToMap(point.Point, colorObserver, markerStyle: esriSimpleMarkerStyle.esriSMSX, size: 10, borderColor: colorObserverBorder);
}
var targetOutOfExtent = new ObservableCollection <AddInPoint>(LLOS_TargetsOutOfExtent.Select(x => x.AddInPoint).Union(TargetOutExtentPoints));
foreach (var point in targetOutOfExtent)
{
AddGraphicToMap(point.Point, colorTarget, markerStyle: esriSimpleMarkerStyle.esriSMSX, size: 10, borderColor: colorTargetBorder);
}
}
else
{
System.Windows.MessageBox.Show(VisibilityLibrary.Properties.Resources.OutOfExtentMsg, VisibilityLibrary.Properties.Resources.OutOfExtentHeader);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
System.Windows.Forms.MessageBox.Show(VisibilityLibrary.Properties.Resources.ExceptionSomethingWentWrong,
VisibilityLibrary.Properties.Resources.CaptionError);
}
finally
{
IsRunning = false;
ClearLLOSCollections();
ValidateLLOS_LayerSelection();
}
}