//获得一个环的形状
private static ESRI.ArcGIS.Geometry.Polygon MakePolygonFromRing(ESRI.ArcGIS.Geometry.IRing pRing)
{
ESRI.ArcGIS.Geometry.Polygon pResPolygon = null;
ESRI.ArcGIS.Geometry.IPolygon pPolygon = null;
try
{
pPolygon = new ESRI.ArcGIS.Geometry.PolygonClass();
ESRI.ArcGIS.Geometry.IGeometryCollection pGeometryCollection;
pGeometryCollection = pPolygon as ESRI.ArcGIS.Geometry.IGeometryCollection;
object missing = Type.Missing;
pGeometryCollection.AddGeometry(pRing, ref missing, ref missing);
pResPolygon = pPolygon as ESRI.ArcGIS.Geometry.Polygon;
return(pResPolygon);
}
catch (Exception err)
{
pResPolygon = null;
pPolygon = null;
}
return(null);
}
/// <summary>
/// Event handler for "Show All Footprint" button click event
/// </summary>
/// <param name="sender">event sender</param>
/// <param name="e">event args</param>
private void showAllFootprint_Click(object sender, EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
IMxDocument mxDoc;
mxDoc = (IMxDocument)m_application.Document;
IGraphicsContainer graphicsContainer;
graphicsContainer = (IGraphicsContainer)mxDoc.FocusMap;
BoundingBox currentExtent = new BoundingBox();
currentExtent.Maxx = mxDoc.ActiveView.Extent.XMax;
currentExtent.Minx = mxDoc.ActiveView.Extent.XMin;
currentExtent.Maxy = mxDoc.ActiveView.Extent.YMax;
currentExtent.Miny = mxDoc.ActiveView.Extent.YMin;
BoundingBox newExtent = currentExtent;
if (showAll)
{
showAll = false;
System.Windows.Forms.ToolTip toolTipForshowAll = new System.Windows.Forms.ToolTip();
toolTipForshowAll.SetToolTip(showAllFootprintToolStripButton, StringResources.hideAllFootprintTooltip);
//showAllFootprintToolStripButton = StringResources.hideAllFootprintTooltip;
showAllFootprintToolStripButton.Image = StringResources.hideAll;
foreach (Object obj in resultsListBox.Items)
{
currentExtent = newExtent;
CswRecord record = (CswRecord)obj;
if (record.BoundingBox.Maxx != NONEXSISTANTNUMBER)
{
drawfootprint(record, true, false);
newExtent = updatedExtent(currentExtent, record.BoundingBox);
}
}
IPoint point = new ESRI.ArcGIS.Geometry.PointClass();
point.PutCoords(newExtent.Minx, newExtent.Maxy);
IPoint point1 = new ESRI.ArcGIS.Geometry.PointClass();
point1.PutCoords(newExtent.Maxx, newExtent.Maxy);
IPoint point2 = new ESRI.ArcGIS.Geometry.PointClass();
point2.PutCoords(newExtent.Maxx, newExtent.Miny);
IPoint point3 = new ESRI.ArcGIS.Geometry.PointClass();
point3.PutCoords(newExtent.Minx, newExtent.Miny);
IPointCollection pointCollection;
pointCollection = new ESRI.ArcGIS.Geometry.PolygonClass();
object x = Type.Missing;
object y = Type.Missing;
pointCollection.AddPoint(point, ref x, ref y);
pointCollection.AddPoint(point1, ref x, ref y);
pointCollection.AddPoint(point2, ref x, ref y);
pointCollection.AddPoint(point3, ref x, ref y);
PolygonElementClass element = new PolygonElementClass();
element.Geometry = (IGeometry)pointCollection;
graphicsContainer = (IGraphicsContainer)mxDoc.FocusMap;
mxDoc.ActiveView.Extent = element.Geometry.Envelope;
mxDoc.ActiveView.Refresh();
}
else
{
showAll = true;
System.Windows.Forms.ToolTip toolTipForshowAll = new System.Windows.Forms.ToolTip();
toolTipForshowAll.SetToolTip(showAllFootprintToolStripButton, StringResources.showAllFootPrintToolTip);
showAllFootprintToolStripButton.Image = StringResources.showAll;
deleteelements();
}
mxDoc.ActiveView.Refresh();
}
catch (Exception ex)
{
ShowErrorMessageBox(ex.Message);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
/// <summary>
/// draw footprints on the map
/// </summary>
/// <param name="record">Record for which the footprint needs to be drwan</param>
/// <param name="refreshview">Indicates if the view is refreshed or not after the element is drawn</param>
/// <param name="deleteelements">Indicates if the element can be deleted or not</param>
private void drawfootprint(CswRecord record, bool refreshview, bool deleteelements)
{
//create the triangle outline symbol
ISimpleLineSymbol lineSymbol = new SimpleLineSymbolClass();
lineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;
lineSymbol.Width = 2.0;
//create the triangle's fill symbol
ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();
simpleFillSymbol.Outline = (ILineSymbol)lineSymbol;
simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSDiagonalCross;
IMxDocument mxDoc;
mxDoc = (IMxDocument)m_application.Document;
//the original projection system
ISpatialReference spatialReference;
IGeographicCoordinateSystem geographicCoordinateSystem;
SpatialReferenceEnvironmentClass spatialReferenceEnviorment = new SpatialReferenceEnvironmentClass();
geographicCoordinateSystem = spatialReferenceEnviorment.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);
spatialReference = (ISpatialReference)geographicCoordinateSystem;
//set the geometry of the element
IPoint point = new ESRI.ArcGIS.Geometry.PointClass();
point.SpatialReference = spatialReference;
point.PutCoords(record.BoundingBox.Minx, record.BoundingBox.Miny);
IPoint point1 = new ESRI.ArcGIS.Geometry.PointClass();
point1.SpatialReference = spatialReference;
point1.PutCoords(record.BoundingBox.Minx, record.BoundingBox.Maxy);
IPoint point2 = new ESRI.ArcGIS.Geometry.PointClass();
point2.SpatialReference = spatialReference;
point2.PutCoords(record.BoundingBox.Maxx, record.BoundingBox.Maxy);
IPoint point3 = new ESRI.ArcGIS.Geometry.PointClass();
point3.SpatialReference = spatialReference;
point3.PutCoords(record.BoundingBox.Maxx, record.BoundingBox.Miny);
IPointCollection pointCollection;
pointCollection = new ESRI.ArcGIS.Geometry.PolygonClass();
object x = Type.Missing;
object y = Type.Missing;
pointCollection.AddPoint(point, ref x, ref y);
pointCollection.AddPoint(point1, ref x, ref y);
pointCollection.AddPoint(point2, ref x, ref y);
pointCollection.AddPoint(point3, ref x, ref y);
PolygonElementClass element = new PolygonElementClass();
element.Symbol = simpleFillSymbol;
element.SpatialReference = spatialReference;
element.Geometry.SpatialReference = spatialReference;
element.Geometry = (IGeometry)pointCollection;
element.Geometry.Project(mxDoc.ActiveView.Extent.SpatialReference);
//add the graphics element to the map
IGraphicsContainer graphicsContainer;
graphicsContainer = (IGraphicsContainer)mxDoc.FocusMap;
if (deleteelements) {
graphicsContainer.DeleteAllElements();
}
graphicsContainer.AddElement(element, 0);
if (refreshview) {
mxDoc.ActiveView.Extent = element.Geometry.Envelope;
mxDoc.ActiveView.Refresh();
}
}
/// <summary>
/// Event handler for "Display Footprint" button click event
/// </summary>
/// <param name="sender">event sender</param>
/// <param name="e">event args</param>
private void displayFootprinttoolStripButton_Click(object sender, EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
CswRecord record = (CswRecord)(resultsListBox.SelectedItem);
drawfootprint(record, false, false);
//add the graphics element to the map
IMxDocument mxDoc;
mxDoc = (IMxDocument)m_application.Document;
IGraphicsContainer graphicsContainer;
graphicsContainer = (IGraphicsContainer)mxDoc.FocusMap;
BoundingBox currentExtent = new BoundingBox();
currentExtent.Maxx = mxDoc.ActiveView.Extent.XMax;
currentExtent.Minx = mxDoc.ActiveView.Extent.XMin;
currentExtent.Maxy = mxDoc.ActiveView.Extent.YMax;
currentExtent.Miny = mxDoc.ActiveView.Extent.YMin;
BoundingBox newExtent = updatedExtent(currentExtent, record.BoundingBox);
IPoint point = new ESRI.ArcGIS.Geometry.PointClass();
point.PutCoords(newExtent.Minx, newExtent.Maxy);
IPoint point1 = new ESRI.ArcGIS.Geometry.PointClass();
point1.PutCoords(newExtent.Maxx, newExtent.Maxy);
IPoint point2 = new ESRI.ArcGIS.Geometry.PointClass();
point2.PutCoords(newExtent.Maxx, newExtent.Miny);
IPoint point3 = new ESRI.ArcGIS.Geometry.PointClass();
point3.PutCoords(newExtent.Minx, newExtent.Miny);
IPointCollection pointCollection;
pointCollection = new ESRI.ArcGIS.Geometry.PolygonClass();
object x = Type.Missing;
object y = Type.Missing;
pointCollection.AddPoint(point, ref x, ref y);
pointCollection.AddPoint(point1, ref x, ref y);
pointCollection.AddPoint(point2, ref x, ref y);
pointCollection.AddPoint(point3, ref x, ref y);
PolygonElementClass element = new PolygonElementClass();
element.Geometry = (IGeometry)pointCollection;
graphicsContainer = (IGraphicsContainer)mxDoc.FocusMap;
mxDoc.ActiveView.Extent = element.Geometry.Envelope;
mxDoc.ActiveView.Refresh();
}
catch (Exception ex)
{
ShowErrorMessageBox(ex.Message);
}
finally
{
Cursor.Current = Cursors.Default;
}
}