private static void DrawCrossHair(ESRI.ArcGIS.Geometry.IGeometry geometry, ESRI.ArcGIS.Display.IDisplay display, IEnvelope extent, ISymbol markerSymbol, ISymbol lineSymbol)
{
try
{
var point = geometry as IPoint;
var numSegments = 10;
var latitudeMid = point.Y;//envelope.YMin + ((envelope.YMax - envelope.YMin) / 2);
var longitudeMid = point.X;
var leftLongSegment = (point.X - extent.XMin) / numSegments;
var rightLongSegment = (extent.XMax - point.X) / numSegments;
var topLatSegment = (extent.YMax - point.Y) / numSegments;
var bottomLatSegment = (point.Y - extent.YMin) / numSegments;
var fromLeftLong = extent.XMin;
var fromRightLong = extent.XMax;
var fromTopLat = extent.YMax;
var fromBottomLat = extent.YMin;
var av = (ArcMap.Application.Document as IMxDocument).ActiveView;
var leftPolyline = new PolylineClass();
var rightPolyline = new PolylineClass();
var topPolyline = new PolylineClass();
var bottomPolyline = new PolylineClass();
leftPolyline.SpatialReference = geometry.SpatialReference;
rightPolyline.SpatialReference = geometry.SpatialReference;
topPolyline.SpatialReference = geometry.SpatialReference;
bottomPolyline.SpatialReference = geometry.SpatialReference;
var leftPC = leftPolyline as IPointCollection;
var rightPC = rightPolyline as IPointCollection;
var topPC = topPolyline as IPointCollection;
var bottomPC = bottomPolyline as IPointCollection;
leftPC.AddPoint(new PointClass()
{
X = fromLeftLong, Y = latitudeMid
});
rightPC.AddPoint(new PointClass()
{
X = fromRightLong, Y = latitudeMid
});
topPC.AddPoint(new PointClass()
{
X = longitudeMid, Y = fromTopLat
});
bottomPC.AddPoint(new PointClass()
{
X = longitudeMid, Y = fromBottomLat
});
for (int x = 1; x <= numSegments; x++)
{
//Flash the input polygon geometry.
display.SetSymbol(markerSymbol);
display.SetSymbol(lineSymbol);
leftPC.AddPoint(new PointClass()
{
X = fromLeftLong + leftLongSegment * x, Y = latitudeMid
});
rightPC.AddPoint(new PointClass()
{
X = fromRightLong - rightLongSegment * x, Y = latitudeMid
});
topPC.AddPoint(new PointClass()
{
X = longitudeMid, Y = fromTopLat - topLatSegment * x
});
bottomPC.AddPoint(new PointClass()
{
X = longitudeMid, Y = fromBottomLat + bottomLatSegment * x
});
// draw
display.DrawPolyline(leftPolyline);
display.DrawPolyline(rightPolyline);
display.DrawPolyline(topPolyline);
display.DrawPolyline(bottomPolyline);
System.Threading.Thread.Sleep(15);
display.FinishDrawing();
av.PartialRefresh(esriViewDrawPhase.esriViewForeground, null, null);
//av.Refresh();
System.Windows.Forms.Application.DoEvents();
display.StartDrawing(display.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache); // Explicit Cast
}
}
catch (Exception ex)
{
}
}
///<summary>Flash geometry on the display. The geometry type could be polygon, polyline, point, or multipoint.</summary>
///
///<param name="geometry"> An IGeometry interface</param>
///<param name="color">An IRgbColor interface</param>
///<param name="display">An IDisplay interface</param>
///<param name="delay">A System.Int32 that is the time im milliseconds to wait.</param>
///
///<remarks></remarks>
public static void FlashGeometry(ESRI.ArcGIS.Geometry.IGeometry geometry, ESRI.ArcGIS.Display.IRgbColor color, ESRI.ArcGIS.Display.IDisplay display, System.Int32 delay, IEnvelope envelope)
{
if (geometry == null || color == null || display == null)
{
return;
}
display.StartDrawing(display.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache); // Explicit Cast
switch (geometry.GeometryType)
{
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon:
{
//Set the flash geometry's symbol.
ESRI.ArcGIS.Display.ISimpleFillSymbol simpleFillSymbol = new ESRI.ArcGIS.Display.SimpleFillSymbolClass();
simpleFillSymbol.Color = color;
ESRI.ArcGIS.Display.ISymbol symbol = simpleFillSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
//Flash the input polygon geometry.
display.SetSymbol(symbol);
display.DrawPolygon(geometry);
System.Threading.Thread.Sleep(delay);
display.DrawPolygon(geometry);
break;
}
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline:
{
//Set the flash geometry's symbol.
ESRI.ArcGIS.Display.ISimpleLineSymbol simpleLineSymbol = new ESRI.ArcGIS.Display.SimpleLineSymbolClass();
simpleLineSymbol.Width = 4;
simpleLineSymbol.Color = color;
ESRI.ArcGIS.Display.ISymbol symbol = simpleLineSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
//Flash the input polyline geometry.
display.SetSymbol(symbol);
display.DrawPolyline(geometry);
System.Threading.Thread.Sleep(delay);
display.DrawPolyline(geometry);
break;
}
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint:
{
//Set the flash geometry's symbol.
ESRI.ArcGIS.Display.ISimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.Display.SimpleMarkerSymbolClass();
simpleMarkerSymbol.Style = ESRI.ArcGIS.Display.esriSimpleMarkerStyle.esriSMSCircle;
simpleMarkerSymbol.Size = 12;
simpleMarkerSymbol.Color = color;
ESRI.ArcGIS.Display.ISymbol markerSymbol = simpleMarkerSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
markerSymbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
ESRI.ArcGIS.Display.ISimpleLineSymbol simpleLineSymbol = new ESRI.ArcGIS.Display.SimpleLineSymbolClass();
simpleLineSymbol.Width = 1;
simpleLineSymbol.Color = color;
ESRI.ArcGIS.Display.ISymbol lineSymbol = simpleLineSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
lineSymbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
//Flash the input polygon geometry.
display.SetSymbol(markerSymbol);
display.SetSymbol(lineSymbol);
ArcMapHelpers.DrawCrossHair(geometry, display, envelope, markerSymbol, lineSymbol);
//Flash the input point geometry.
display.SetSymbol(markerSymbol);
display.DrawPoint(geometry);
System.Threading.Thread.Sleep(delay);
display.DrawPoint(geometry);
break;
}
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryMultipoint:
{
//Set the flash geometry's symbol.
ESRI.ArcGIS.Display.ISimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.Display.SimpleMarkerSymbolClass();
simpleMarkerSymbol.Style = ESRI.ArcGIS.Display.esriSimpleMarkerStyle.esriSMSCircle;
simpleMarkerSymbol.Size = 12;
simpleMarkerSymbol.Color = color;
ESRI.ArcGIS.Display.ISymbol symbol = simpleMarkerSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
//Flash the input multipoint geometry.
display.SetSymbol(symbol);
display.DrawMultipoint(geometry);
System.Threading.Thread.Sleep(delay);
display.DrawMultipoint(geometry);
break;
}
}
display.FinishDrawing();
}
