public static IPoint ConvertPcsToGcs(IPoint point, IProjectedCoordinateSystem projectedCoordinateSystem)
{
WKSPoint wksPoint = new WKSPoint();
wksPoint.X = point.X;
wksPoint.Y = point.Y;
projectedCoordinateSystem.Inverse(1, ref wksPoint);
IPoint pPoint = new PointClass();
pPoint.X = wksPoint.X;
pPoint.Y = wksPoint.Y;
return(pPoint);
}
/// <summary>
/// 设置矩形框范围
/// </summary>
/// <param name="pFeature"></param>
/// <param name="XLength">X轴方向长度二分之一</param>
/// <param name="YLength">Y轴方向长度二分之一</param>
/// <returns></returns>
private IGeometry SetGeometry(IFeature pFeature, ref string mapNO)
{
IGeometry res = null;
//pGeometry = new EnvelopeClass();
IEnvelope penvelope = new EnvelopeClass();
ISpatialReference pSpatialRefrence = pFeature.ShapeCopy.SpatialReference;
string mapNo = "";
if (pSpatialRefrence is IProjectedCoordinateSystem)
{
IGeographicCoordinateSystem pGCS = (pSpatialRefrence as IProjectedCoordinateSystem).GeographicCoordinateSystem;
IArea pArea = pFeature.ShapeCopy as IArea;
IPoint pCPoint = pArea.Centroid;
double difX = 1 * 3600 / 16,
difY = 1 * 3600 / 24;
IProjectedCoordinateSystem pPCS = pSpatialRefrence as IProjectedCoordinateSystem;
WKSPoint pPointMin = new WKSPoint();
pPointMin.X = pCPoint.X;
pPointMin.Y = pCPoint.Y;
pPCS.Inverse(1, ref pPointMin);
double minX = Math.Floor(pPointMin.X * 3600 / difX) * difX;
double minY = Math.Floor(pPointMin.Y * 3600 / difY) * difY;
long lScale = 10000;
GeoDrawSheetMap.basPageLayout.GetNewCodeFromCoordinate(ref mapNo, (long)(pPointMin.X * 3600), (long)(pPointMin.Y * 3600), lScale);
//GeoDrawSheetMap.basPageLayout.GetNewCodeFromCoordinate(ref mapNo, (long)(minX), (long)(minY+3), lScale);
penvelope.PutCoords(minX / 3600, minY / 3600, (minX + difX) / 3600, (minY + difY) / 3600);
penvelope.SpatialReference = pGCS;
penvelope.Project(pSpatialRefrence);
res = penvelope;
}
mapNO = mapNo;
return(res);
}