public static IGeometryCollection ConstructPolygon(IPoint[] pointArray)
{
//创建一个Ring对象，通过ISegmentCollection接口向其中添加Segment对象
object o = Type.Missing;
ISegmentCollection pSegCollection = new RingClass();
for (int i = 0; i < pointArray.Length - 1; i++)
{
IPoint from = pointArray[i];
IPoint to = pointArray[i + 1];
ILine pLine = new LineClass();
//设置Line对象的起始终止点
pLine.PutCoords(from, to);
//QI到ISegment
ISegment pSegment = pLine as ISegment;
pSegCollection.AddSegment(pSegment, ref o, ref o);
}
//QI到IRing接口封闭Ring对象，使其有效
IRing pRing = pSegCollection as IRing;
pRing.Close();
//使用Ring对象构建Polygon对象
IGeometryCollection pGeometryColl = new PolygonClass();
pGeometryColl.AddGeometry(pRing, ref o, ref o);
//释放AO对象
System.Runtime.InteropServices.Marshal.ReleaseComObject(pRing);
return(pGeometryColl);
}
public static IGeometryCollection ConstructPolygon(List <IPoint> pointArray)
{
//创建一个Ring对象，通过ISegmentCollection接口向其中添加Segment对象
object o = Type.Missing;
ISegmentCollection pSegCollection = new RingClass();
for (int i = 0; i < pointArray.Count - 1; i++)
{
IPoint from = pointArray[i];
IPoint to = pointArray[i + 1];
ILine pLine = new LineClass();
//设置Line对象的起始终止点
pLine.PutCoords(from, to);
//QI到ISegment
ISegment pSegment = pLine as ISegment;
pSegCollection.AddSegment(pSegment, ref o, ref o);
}
//QI到IRing接口封闭Ring对象，使其有效
IRing pRing = pSegCollection as IRing;
pRing.Close();
//使用Ring对象构建Polygon对象
IGeometryCollection pGeometryColl = new PolygonClass();
pGeometryColl.AddGeometry(pRing, ref o, ref o);
return(pGeometryColl);
}
private IGeometry EllipticArcTransPolygon(IEllipticArc pEll)
{
try
{
object missing = Type.Missing;
ISegmentCollection pSegmentColl = new RingClass();
pSegmentColl.AddSegment((ISegment)pEll, ref missing, ref missing);
IRing pRing = (IRing)pSegmentColl;
pRing.Close(); //得到闭合的环
IGeometryCollection pGeometryCollection = new PolygonClass();
pGeometryCollection.AddGeometry(pRing, ref missing, ref missing); //环转面
IPolygon pPolygon = (IPolygon)pGeometryCollection;
return(pPolygon);
}
catch (Exception ex)
{
throw ex;
}
}
private IPolygon Arc2Polygon(ICircularArc Arc)
{
ISegmentCollection pSegCol = new RingClass();
object obj = Type.Missing;
pSegCol.AddSegment((ISegment)Arc, ref obj, ref obj);
//enclose ring make it valid
IRing pRing;
pRing = pSegCol as IRing;
pRing.Close();
IGeometryCollection pPolygonCol = new PolygonClass();
pPolygonCol.AddGeometry(pRing, ref obj, ref obj);
IPolygon circlePolygon = (IPolygon)pPolygonCol;
// mirror spatial referrence
ISpatialReference spr = Arc.SpatialReference;
circlePolygon.SpatialReference = spr;
return(circlePolygon);
}
private void DrawEllipse()
{
IEnvelope envelope = this.m_mapControl.TrackRectangle();
if (!envelope.IsEmpty)
{
IConstructEllipticArc constructEllipticArc = new EllipticArcClass();
constructEllipticArc.ConstructEnvelope(envelope);
ISegment inSegment = constructEllipticArc as ISegment;
ISegmentCollection segmentCollection = new RingClass();
object missing = Type.Missing;
segmentCollection.AddSegment(inSegment, ref missing, ref missing);
IRing ring = segmentCollection as IRing;
ring.Close();
IGeometryCollection geometryCollection = new PolygonClass();
geometryCollection.AddGeometry(ring, ref missing, ref missing);
this.AppendNodeToTreeList(new EllipseElementClass
{
Geometry = (geometryCollection as IGeometry)
});
}
}
public static IGeometryCollection ConstructPolygon(ISegment[] segmentArray)
{
//创建一个Ring对象，通过ISegmentCollection接口向其中添加Segment对象
object o = Type.Missing;
ISegmentCollection pSegCollection = new RingClass();
for (int i = 0; i < segmentArray.Length; i++)
{
pSegCollection.AddSegment(segmentArray[i], ref o, ref o);
}
//QI到IRing接口封闭Ring对象，使其有效
IRing pRing = pSegCollection as IRing;
pRing.Close();
//使用Ring对象构建Polygon对象
IGeometryCollection pGeometryColl = new PolygonClass();
pGeometryColl.AddGeometry(pRing, ref o, ref o);
return(pGeometryColl);
}
public static IPolygon GetVisilityPolygon(List <IPolyline> polylines)
{
IGeometryCollection geometryCollection = new PolygonClass();
ISegmentCollection ringSegColl1 = new RingClass();
foreach (var polyline in polylines)
{
ILine line = new LineClass()
{
FromPoint = polyline.FromPoint, ToPoint = polyline.ToPoint, SpatialReference = polyline.SpatialReference
};
var polylineSeg = (ISegment)line;
ringSegColl1.AddSegment(polylineSeg);
}
var ringGeometry = ringSegColl1 as IGeometry;
IZAware zAwareRing = ringGeometry as IZAware;
zAwareRing.ZAware = true;
IRing ring1 = ringSegColl1 as IRing;
ring1.Close();
IGeometryCollection polygon = new PolygonClass();
polygon.AddGeometry(ring1 as IGeometry);
var geometry = polygon as IGeometry;
IZAware zAware = geometry as IZAware;
zAware.ZAware = true;
var result = polygon as IPolygon;
result.SpatialReference = polylines[0].SpatialReference;
return(result);
}
static private IPolygon ConstructPolygonFromPolyline(IPolyline pPolyline)
{
IGeometryCollection pPolygonGeoCol = new PolygonClass();
if ((pPolyline != null) && (!pPolyline.IsEmpty))
{
IGeometryCollection pPolylineGeoCol = pPolyline as IGeometryCollection;
ISegmentCollection pSegCol = new RingClass();
ISegment pSegment = null;
object missing = Type.Missing;
for (int i = 0; i < pPolylineGeoCol.GeometryCount; i++)
{
ISegmentCollection pPolylineSegCol = pPolylineGeoCol.get_Geometry(i) as ISegmentCollection;
for (int j = 0; j < pPolylineSegCol.SegmentCount; j++)
{
pSegment = pPolylineSegCol.get_Segment(j);
pSegCol.AddSegment(pSegment, ref missing, ref missing);
}
pPolygonGeoCol.AddGeometry(pSegCol as IGeometry, ref missing, ref missing);
}
}
return(pPolygonGeoCol as IPolygon);
}
//}
/// <summary>
/// 矢量转换函数
/// </summary>
private void exprotMatrix()
{
ClsGDBDataCommon comm = new ClsGDBDataCommon();
if (!textOutData.Text.EndsWith("shp"))
{
//timerShow.Start();
MessageBox.Show("输出文件名不是shp文件!");
return;
}
object featureOID;
String strFullName = textOutData.Text;
string strPath = System.IO.Path.GetDirectoryName(strFullName);
string strName = System.IO.Path.GetFileName(strFullName);
ILayer player = null;
for (int i = 0; i < pMapControl.Map.LayerCount; i++)
{
if (pMapControl.Map.Layer[i].Name == cmbLayer.Text)
{
player = pMapControl.Map.Layer[i];
break;
}
}
IFeatureLayer pFlayer = player as IFeatureLayer;
IFeatureClass pFclass = pFlayer.FeatureClass;
IFields pFields = pFclass.Fields;
//设置空间参考
ISpatialReference pSpatialRef;
IGeoDataset pGeo = (IGeoDataset)pFlayer;
pSpatialRef = pGeo.SpatialReference;
IFeatureClass pFtClassNew = comm.CreateShapefile(strPath, strName, pFields, pSpatialRef);
//for (int i = 0; i < pFtClassNew.Fields.FieldCount;i++ )
//{
// if (pFtClassNew.Fields.get_Field(i).Type != esriFieldType.esriFieldTypeGeometry &&
// pFtClassNew.Fields.get_Field(i).Type != esriFieldType.esriFieldTypeOID)
// {
// pFtClassNew.Fields.get_Field(i).IsNullable = true;
// }
//}
IFeatureCursor pFC = pFlayer.FeatureClass.Search(null, false);
IFeature pF = pFC.NextFeature();
while (pF != null)
{
if (pFclass.ShapeType == esriGeometryType.esriGeometryMultipoint || pFclass.ShapeType == esriGeometryType.esriGeometryPoint)
{
double[] oldarray = new double[3];
double[] newarray = new double[3];
Matrix matrix = new Matrix();
IPoint pPointOld = pF.Shape as IPoint;
IPoint pPointNew = new PointClass();
oldarray[0] = pPointOld.X;
oldarray[1] = pPointOld.Y;
if (pPointOld.Z.ToString() == "NaN" || pPointOld.Z.ToString() == "非数字")
{
oldarray[2] = 0;//pPointOld.Z;
}
else
{
oldarray[2] = pPointOld.Z;
}
matrix.coord_Trans(oldarray, rotateMat, tranVec, newarray);
pPointNew.X = newarray[0];
pPointNew.Y = newarray[1];
if (pPointOld.Z.ToString() == "NaN" || pPointOld.Z.ToString() == "非数字")
{
pPointNew.Z = 0;
}
else
{
pPointNew.Z = newarray[2];
}
IFeature pFeatureTemp = pFtClassNew.CreateFeature();
pFeatureTemp.Shape = pPointNew as IGeometry;
ClsGDBDataCommon.CopyFeatureFieldValue(pF, pFeatureTemp);
pFeatureTemp.Store();
}
else if (pFclass.ShapeType == esriGeometryType.esriGeometryLine || pFclass.ShapeType == esriGeometryType.esriGeometryPolyline)
{
double[] oldarrayS = new double[3];
double[] oldarrayT = new double[3];
double[] newarrayS = new double[3];
double[] newarrayT = new double[3];
Matrix matrix = new Matrix();
ISegmentCollection pSegCOld = pF.Shape as ISegmentCollection;
ISegmentCollection pSegCNew = new PolylineClass();
// ISegment pSegmentNEW = new LineClass();
//ILine pLine = new LineClass();
IPoint pPointF = new PointClass();
IPoint pPointT = new PointClass();
for (int i = 0; i < pSegCOld.SegmentCount; i++)
{
ISegment pSegmentNEW = new LineClass();
ISegment pseg = pSegCOld.Segment[i];
oldarrayS[0] = pseg.FromPoint.X;
oldarrayS[1] = pseg.FromPoint.Y;
if (pseg.FromPoint.Z.ToString() == "NaN" || pseg.FromPoint.Z.ToString() == "非数字")
{
oldarrayS[2] = 0;
}
else
{
oldarrayS[2] = pseg.FromPoint.Z;
}
matrix.coord_Trans(oldarrayS, rotateMat, tranVec, newarrayS);
pPointF.X = newarrayS[0];
pPointF.Y = newarrayS[1];
if (pseg.FromPoint.Z.ToString() == "NaN" || pseg.FromPoint.Z.ToString() == "非数字")
{
pPointF.Z = 0;
}
else
{
pPointF.Z = newarrayS[2];
}
pSegmentNEW.FromPoint = pPointF;
oldarrayT[0] = pseg.ToPoint.X;
oldarrayT[1] = pseg.ToPoint.Y;
if (pseg.ToPoint.Z.ToString() == "NaN" || pseg.ToPoint.Z.ToString() == "非数字")
{
oldarrayT[2] = 0;
}
else
{
oldarrayT[2] = pseg.ToPoint.Z;
}
matrix.coord_Trans(oldarrayT, rotateMat, tranVec, newarrayT);
pPointT.X = newarrayT[0];
pPointT.Y = newarrayT[1];
if (pseg.ToPoint.Z.ToString() == "NaN" || pseg.ToPoint.Z.ToString() == "非数字")
{
pPointT.Z = 0;
}
else
{
pPointT.Z = newarrayT[2];
}
pSegmentNEW.ToPoint = pPointT;
pSegCNew.AddSegment(pSegmentNEW);
}
IFeature pFeatureTemp = pFtClassNew.CreateFeature();
pFeatureTemp.Shape = pSegCNew as IGeometry;
ClsGDBDataCommon.CopyFeatureFieldValue(pF, pFeatureTemp);
pFeatureTemp.Store();
}
else if (pFclass.ShapeType == esriGeometryType.esriGeometryPolygon)
{
double[] oldarrayS = new double[3];
double[] oldarrayT = new double[3];
double[] newarrayS = new double[3];
double[] newarrayT = new double[3];
Matrix matrix = new Matrix();
IGeometryCollection pGCollectionOld = pF.Shape as IGeometryCollection;
IGeometryCollection pGCollectionNew = new PolygonClass();
ISegmentCollection psegCOld = new RingClass();
//ILine pLine = new LineClass();
IPoint pPointF = new PointClass();
IPoint pPointT = new PointClass();
//IPointCollection pPointCOld = new PolygonClass();
//IPointCollection pPointCNew = new PolygonClass();
//pPointCOld=pF.Shape as IPointCollection;
//for (int i = 0; i < pPointCOld.PointCount;i++ )
//{
// pPointF = pPointCOld.Point[i];
// oldarrayS[0] = pPointF.X;
// oldarrayS[0] = pPointF.Y;
// if (pPointF.Z.ToString() == "NaN" || pPointF.Z.ToString() == "非数字")
// {
// oldarrayS[2] = 0;//pPointOld.Z;
// }
// else
// {
// oldarrayS[2] = pPointF.Z;
// }
// matrix.coord_Trans(oldarrayS, rotateMat, tranVec, newarrayT);
// pPointT.X = newarrayT[0];
// pPointT.Y = newarrayT[1];
// if (pPointF.Z.ToString() == "NaN" || pPointF.Z.ToString() == "非数字")
// {
// pPointT.Z = 0;
// }
// else
// {
// pPointT.Z = newarrayT[2];
// }
// pPointCNew.AddPoint(pPointT);
//}
//IPolygon pPolygon = pPointCNew as IPolygon;
//pPolygon.Close();
//IFeature pFeatureTemp = pFtClassNew.CreateFeature();
//pFeatureTemp.Shape = pPolygon as IGeometry;
//CopyFeatureField(pF, pFeatureTemp);
//pFeatureTemp.Store();
///方法一
//IPolygon pPolygon=pF.Shape as IPolygon;
//IRing pExterRingOld = new RingClass();
//IRing pExterRingNew = new RingClass();
//for (int i = 0; i<pPolygon.ExteriorRingCount;i++ )
//{
// pExterRingOld = pPolygon.FindExteriorRing(null);
//}
//方法二
for (int i = 0; i < pGCollectionOld.GeometryCount; i++)
{
psegCOld = pGCollectionOld.Geometry[i] as ISegmentCollection;
ISegmentCollection pSegCNew = new RingClass();
for (int j = 0; j < psegCOld.SegmentCount - 1; j++)
{
ISegment pSegmentNEW = new LineClass();
ISegment pseg = psegCOld.Segment[j];
oldarrayS[0] = pseg.FromPoint.X;
oldarrayS[1] = pseg.FromPoint.Y;
if (pseg.FromPoint.Z.ToString() == "NaN" || pseg.FromPoint.Z.ToString() == "非数字")
{
oldarrayS[2] = 0;
}
else
{
oldarrayS[2] = pseg.FromPoint.Z;
}
matrix.coord_Trans(oldarrayS, rotateMat, tranVec, newarrayS);
pPointF.X = newarrayS[0];
pPointF.Y = newarrayS[1];
if (pseg.FromPoint.Z.ToString() == "NaN" || pseg.FromPoint.Z.ToString() == "非数字")
{
pPointF.Z = 0;
}
else
{
pPointF.Z = newarrayS[2];
}
pSegmentNEW.FromPoint = pPointF;
oldarrayT[0] = pseg.ToPoint.X;
oldarrayT[1] = pseg.ToPoint.Y;
if (pseg.ToPoint.Z.ToString() == "NaN" || pseg.ToPoint.Z.ToString() == "非数字")
{
oldarrayT[2] = 0;
}
else
{
oldarrayT[2] = pseg.ToPoint.Z;
}
matrix.coord_Trans(oldarrayT, rotateMat, tranVec, newarrayT);
pPointT.X = newarrayT[0];
pPointT.Y = newarrayT[1];
if (pseg.ToPoint.Z.ToString() == "NaN" || pseg.ToPoint.Z.ToString() == "非数字")
{
pPointT.Z = 0;
}
else
{
pPointT.Z = newarrayT[2];
}
pSegmentNEW.ToPoint = pPointT;
pSegCNew.AddSegment(pSegmentNEW);
}
IRing pRing = pSegCNew as IRing;
pRing.Close();
object ob = Type.Missing;
pGCollectionNew.AddGeometry(pRing as IGeometry, ref ob, ref ob);
}
IFeature pFeatureTemp = pFtClassNew.CreateFeature();
pFeatureTemp.Shape = pGCollectionNew as IGeometry;
ClsGDBDataCommon.CopyFeatureFieldValue(pF, pFeatureTemp);
pFeatureTemp.Store();
}
pF = pFC.NextFeature();
}
IFeatureLayer ppFeatureLayer = new FeatureLayerClass();
ppFeatureLayer.FeatureClass = pFtClassNew;
ppFeatureLayer.Name = strName;
pMapControl.AddLayer(ppFeatureLayer as ILayer);
//pMapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
this.Close();
}
public static IPolygon CreatePolygon(object[] rings)
{
IPolygon result = null;
IGeometryCollection pGeomCol = new PolygonClass();
object objMissing = Type.Missing;
foreach (object o in rings)//part
{
object[] ringpoints = o as object[];
if (ringpoints != null)
{
ISegmentCollection pSegCol = new RingClass();
ISegment pSeg = new LineClass();
IPoint pFromPt = new PointClass();
IPoint pToPt = new PointClass();
IPoint pEndPt = new PointClass();
List <PointObject> poList = new List <PointObject>();
foreach (object po in ringpoints)
{
PointObject pObj = new PointObject();
object[] ptxya = po as object[];
if (ptxya != null)
{
if (ptxya.Length == 3)
{
pObj.X = double.Parse(ptxya[0].ToString());
pObj.Y = double.Parse(ptxya[1].ToString());
pObj.A = int.Parse(ptxya[2].ToString());
}
else if (ptxya.Length == 2)
{
pObj.X = double.Parse(ptxya[0].ToString());
pObj.Y = double.Parse(ptxya[1].ToString());
pObj.A = 0;
}
else
{
throw new Exception("坐标串输入错误!");
}
poList.Add(pObj);
}
}
if (poList.Count < 3)
{
throw new Exception("至少保证三个点来确定一个面！");
}
for (int i = 0; i < poList.Count - 1; i++)
{
if (poList[i].A.Equals(1))//处理狐段
{
PointObject poF = null;
PointObject poT = null;
PointObject poE = null;
if (i - 1 < 0)
{
poF = poList[poList.Count - 2];
}
else
{
poF = poList[i - 1];
}
poT = poList[i];
poE = poList[i + 1];
pFromPt.PutCoords(poF.X, poF.Y);
pToPt.PutCoords(poT.X, poT.Y);
pEndPt.PutCoords(poE.X, poE.Y);
//圆弧
ICircularArc cirularArc = new CircularArcClass();
IConstructCircularArc constructCircularArc = cirularArc as IConstructCircularArc;
constructCircularArc.ConstructThreePoints(pFromPt, pToPt, pEndPt, true);
pSeg = cirularArc as ISegment;
pSegCol.AddSegment(pSeg, ref objMissing, ref objMissing);
}
else
{
if (poList[i + 1].A.Equals(0))//处理直线，否则不处理
{
pFromPt.PutCoords(poList[i].X, poList[i].Y);
pToPt.PutCoords(poList[i + 1].X, poList[i + 1].Y);
pSeg = new LineClass();
pSeg.FromPoint = pFromPt;
pSeg.ToPoint = pToPt;
//一根线段
pSegCol.AddSegment(pSeg, ref objMissing, ref objMissing);
}
}
}
//QI到IRing接口封闭Ring对象，使其有效
IRing pRing = pSegCol as IRing;
pRing.Close();
//一个part
pGeomCol.AddGeometry(pSegCol as IGeometry, ref objMissing, ref objMissing);
}
}
result = pGeomCol as IPolygon;
ITopologicalOperator pTop = result as ITopologicalOperator;
pTop.Simplify();
return(result);
}
private IElement DrawCircle(double radius, double x, double y)
{
IPoint centralPoint = new PointClass();
centralPoint.PutCoords(x, y);
// 创建园
ICircularArc circularArc = new CircularArcClass();
IConstructCircularArc construtionCircularArc = circularArc as IConstructCircularArc;
construtionCircularArc.ConstructCircle(centralPoint, radius, true);
ISegment pSegment1 = circularArc as ISegment;
//通过ISegmentCollection构建Ring对象
ISegmentCollection pSegCollection = new RingClass();
object o = Type.Missing;
//添加Segement对象即圆
pSegCollection.AddSegment(pSegment1, ref o, ref o);
//QI到IRing接口封闭Ring对象，使其有效
IRing pRing = pSegCollection as IRing;
pRing.Close();
//通过Ring对象使用IGeometryCollection构建Polygon对象
IGeometryCollection pGeometryColl = new PolygonClass();
pGeometryColl.AddGeometry(pRing, ref o, ref o);
//构建一个CircleElement对象
IElement pElement = new CircleElementClass();
pElement.Geometry = pGeometryColl as IGeometry;
IFillShapeElement pFillShapeElement = pElement as IFillShapeElement;
ISimpleFillSymbol pFillSymbol = new SimpleFillSymbolClass();
//pFillSymbol.Color = pCircleColor;
ILineSymbol pLineSymbol = new SimpleLineSymbolClass();
// pLineSymbol.Color = DefineColor(0, 255, 0);
pFillSymbol.Outline = pLineSymbol;
pFillShapeElement.Symbol = pFillSymbol;
IFillShapeElement circleElement = pElement as IFillShapeElement;
circleElement.Symbol = pFillSymbol;
IGraphicsContainer pGC = this.axMapControl.ActiveView.GraphicsContainer;
pGC.AddElement(pElement, 0);
axMapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
return pElement;
}
/// <summary>
/// ��ת��
/// </summary>
/// <params name="pPolyline"></params>
/// <returns></returns>
public static IPolygon PolylineToPolygon(IPolyline pPolyline)
{
IPolygon pPolygon = null;
IGeometryCollection pGeometryCollection = new PolygonClass();
if (pPolyline != null && pPolyline.IsEmpty == false)
{
IGeometryCollection pPolylineGeoCol = pPolyline as IGeometryCollection;
ISegmentCollection pSegCol = new RingClass();
ISegment pSegment = null;
object missing = Type.Missing;
for (int i = 0; i < pPolylineGeoCol.GeometryCount; i++)
{
ISegmentCollection pPolylineSegCol = pPolylineGeoCol.get_Geometry(i) as ISegmentCollection;
for (int j = 0; j < pPolylineSegCol.SegmentCount; j++)
{
pSegment = pPolylineSegCol.get_Segment(j);
pSegCol.AddSegment(pSegment, ref missing, ref missing);
}
pGeometryCollection.AddGeometry(pSegCol as IGeometry, ref missing, ref missing);
}
}
pPolygon = pGeometryCollection as IPolygon;
if (pPolygon.IsClosed == false)
pPolygon.Close();
pPolygon.SpatialReference = DataEditCommon.g_pMyMapCtrl.SpatialReference;
return pPolygon;
}
private IPolygon CostruisciPoligonoBuffer(double xCentro, double yCentro, long raggio)
{
IPolygon cerchio = null;
try
{
IGeoDataset geoDataset = fcClienti as IGeoDataset;
#region Costruisco i 4 punti cardine del cerchio
IPoint centro = new PointClass();
centro.SpatialReference = geoDataset.SpatialReference;
centro.X = xCentro;
centro.Y = yCentro;
IPoint puntoNord = new PointClass();
puntoNord.SpatialReference = geoDataset.SpatialReference;
puntoNord.X = xCentro;
puntoNord.Y = (yCentro + raggio);
IPoint puntoSud = new PointClass();
puntoSud.SpatialReference = geoDataset.SpatialReference;
puntoSud.X = xCentro;
puntoSud.Y = (yCentro - raggio);
IPoint puntoOvest = new PointClass();
puntoOvest.SpatialReference = geoDataset.SpatialReference;
puntoOvest.X = (xCentro + raggio);
puntoOvest.Y = yCentro;
IPoint puntoEst = new PointClass();
puntoEst.SpatialReference = geoDataset.SpatialReference;
puntoEst.X = (xCentro - raggio);
puntoEst.Y = yCentro;
#endregion
ISegmentCollection ringSegColl = new RingClass();
ICircularArc circularArc = new CircularArcClass();
circularArc.PutCoords(centro, puntoNord, puntoOvest, esriArcOrientation.esriArcClockwise);
ringSegColl.AddSegment(circularArc as ISegment);
ICircularArc circularArc2 = new CircularArcClass();
circularArc2.PutCoords(centro, puntoOvest, puntoSud, esriArcOrientation.esriArcClockwise);
ringSegColl.AddSegment(circularArc2 as ISegment);
ICircularArc circularArc3 = new CircularArcClass();
circularArc3.PutCoords(centro, puntoSud, puntoEst, esriArcOrientation.esriArcClockwise);
ringSegColl.AddSegment(circularArc3 as ISegment);
ICircularArc circularArc4 = new CircularArcClass();
circularArc4.PutCoords(centro, puntoEst, puntoNord, esriArcOrientation.esriArcClockwise);
ringSegColl.AddSegment(circularArc4 as ISegment);
IRing ringl = ringSegColl as IRing;
ringl.Close();
IGeometryCollection polygon = new PolygonClass();
polygon.AddGeometry(ringl as IGeometry);
cerchio = polygon as IPolygon;
}
catch (Exception errore)
{
logger.LogMessage(ServerLogger.msgType.error, "Construct", 8000, $@"SOE GeoMarketing GiancaGIS: {errore.Message}");
}
return(cerchio);
}
/// <summary>
/// 通过线创建面
/// </summary>
/// <param name="pPolyline">线</param>
/// <returns>面</returns>
IPolygon ConstructPolygonFromPolyline(IPolyline _pPolyline)
{
IGeometryCollection pPolygonGeoCol = new PolygonClass();
if ((_pPolyline != null) && (!_pPolyline.IsEmpty))
{
IGeometryCollection pPolylineGeoCol = _pPolyline as IGeometryCollection;
ISegmentCollection pSegCol = new RingClass();
ISegment pSegment = null;
object missing = Type.Missing;
for (int i = 0; i < pPolylineGeoCol.GeometryCount; i++)
{
ISegmentCollection pPolylineSegCol = pPolylineGeoCol.get_Geometry(i) as ISegmentCollection;
for (int j = 0; j < pPolylineSegCol.SegmentCount; j++)
{
pSegment = pPolylineSegCol.get_Segment(j);
pSegCol.AddSegment(pSegment, ref missing, ref missing);
}
pPolygonGeoCol.AddGeometry(pSegCol as IGeometry, ref missing, ref missing);
}
}
return pPolygonGeoCol as IPolygon;
}