public bool AddVertex(IDisplay display, gView.Framework.Geometry.IPoint point)
{
double distance;
IPoint snapped = gView.Framework.SpatialAlgorithms.Algorithm.NearestPointToPath(
_geometry, point, out distance, true);
return(snapped != null);
}
public HitPositions HitTest(IDisplay display, gView.Framework.Geometry.IPoint point)
{
if (_geometry == null)
{
return(null);
}
IPointCollection pColl = gView.Framework.SpatialAlgorithms.Algorithm.GeometryPoints(_geometry, true);
if (pColl == null || pColl.PointCount == 0)
{
return(null);
}
double tol = 5.0 * display.mapScale / (display.dpi / 0.0254); // [m]
if (display.SpatialReference != null &&
display.SpatialReference.SpatialParameters.IsGeographic)
{
tol = 180.0 * tol / Math.PI / 6370000.0;
}
for (int i = 0; i < pColl.PointCount; i++)
{
IPoint p = pColl[i];
if (p == null)
{
continue;
}
if (gView.Framework.SpatialAlgorithms.Algorithm.PointDistance(p, point) < tol)
{
return(new HitPosition(HitPosition.VertexCursor, i));
}
}
List <IPath> paths = gView.Framework.SpatialAlgorithms.Algorithm.GeometryPaths(_geometry);
if (paths == null || paths.Count == 0)
{
return(null);
}
Polyline pLine = new Polyline(paths);
if (gView.Framework.SpatialAlgorithms.Algorithm.IntersectBox(pLine, new Envelope(
point.X - tol / 2, point.Y - tol / 2,
point.X + tol / 2, point.Y + tol / 2)))
{
return(new HitPosition(System.Windows.Forms.Cursors.Default, -1));
}
return(null);
}
private string PointToString(gView.Framework.Geometry.IPoint p, ISpatialReference sRef)
{
if (sRef != null &&
(sRef.Gml3AxisX == AxisDirection.North || sRef.Gml3AxisX == AxisDirection.South) &&
(sRef.Gml3AxisY == AxisDirection.West || sRef.Gml3AxisY == AxisDirection.East))
{
return(p.Y.ToString(_nhi) + " " + p.X.ToString(_nhi));
}
else
{
return(p.X.ToString(_nhi) + " " + p.Y.ToString(_nhi));
}
}
public bool TrySelect(IDisplay display, gView.Framework.Geometry.IPoint point)
{
return(false);
}
public ICursor PointQuery(gView.Framework.Carto.IDisplay display, gView.Framework.Geometry.IPoint point, ISpatialReference sRef, IUserData userdata)
{
if (display == null || point == null)
{
return(null);
}
IEnvelope dispEnvelope = display.Envelope;
if (sRef != null)
{
ISpatialReference mySRef = SpatialReference.FromID(_srs.Srs[_srs.SRSIndex]);
if (mySRef != null && !mySRef.Equals(sRef))
{
// TODO:
// Stimmt net ganz, eigentlich wird beim Projezieren aus dem
// Envelope ein Polygon, auch der Punkt, der als X-Pixel, Y-Pixel
// übergeben wird, sollte sich ändern...
// --> World2Image stimmt nicht 100%
//
dispEnvelope = GeometricTransformer.Transform2D(dispEnvelope, sRef, mySRef).Envelope;
}
}
double x = point.X, y = point.Y;
display.World2Image(ref x, ref y);
StringBuilder request = new StringBuilder("VERSION=1.1.1&REQUEST=GetFeatureInfo");
request.Append("&QUERY_LAYERS=" + this.Name);
request.Append("&QUERYLAYERS=" + this.Name);
request.Append("&LAYERS=" + this.Name);
//request.Append("&LAYERS=" + this.Name);
request.Append("&EXCEPTIONS=" + _exceptions.Formats[0]);
request.Append("&SRS=" + _srs.Srs[_srs.SRSIndex]);
request.Append("&WIDTH=" + display.iWidth);
request.Append("&HEIGHT=" + display.iHeight);
request.Append("&INFOFORMAT=" + _getFeatureInfo.Formats[_getFeatureInfo.FormatIndex]);
request.Append("&INFO_FORMAT=" + _getFeatureInfo.Formats[_getFeatureInfo.FormatIndex]);
request.Append("&BBOX=" + dispEnvelope.minx.ToString(_nhi) + "," +
dispEnvelope.miny.ToString(_nhi) + "," +
dispEnvelope.maxx.ToString(_nhi) + "," +
dispEnvelope.maxy.ToString(_nhi));
request.Append("&X=" + (int)x);
request.Append("&Y=" + (int)y);
string response;
if (_getFeatureInfo.Formats[_getFeatureInfo.FormatIndex].ToLower().StartsWith("xsl/"))
{
return(new UrlCursor(WMSDataset.Append2Url(_getFeatureInfo.Get_OnlineResource, request.ToString())));
}
else
{
switch (_getFeatureInfo.Formats[_getFeatureInfo.FormatIndex].ToLower())
{
case "text/plain":
response = WebFunctions.HttpSendRequest(WMSDataset.Append2Url(_getFeatureInfo.Get_OnlineResource, request.ToString()));
return(new TextCursor(response));
case "text/html":
return(new UrlCursor(WMSDataset.Append2Url(_getFeatureInfo.Get_OnlineResource, request.ToString())));
case "text/xml":
response = WebFunctions.HttpSendRequest(WMSDataset.Append2Url(_getFeatureInfo.Get_OnlineResource, request.ToString()));
return(new RowCursor(Xml2Rows(response)));
case "application/vnd.ogc.gml":
response = WebFunctions.HttpSendRequest(WMSDataset.Append2Url(_getFeatureInfo.Get_OnlineResource, request.ToString()));
return(new RowCursor(Gml2Rows(response)));
}
}
return(null);
}