public static IPolyline CreatePolyline(object[] paths)
{
IPolyline result = null;
IGeometryCollection pGeomCol = new PolylineClass();
object objMissing = Type.Missing;
foreach (object o in paths)//part
{
object[] ringpoints = o as object[];
if (ringpoints != null)
{
ISegmentCollection pSegCol = new PathClass();
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 < 2)
{
throw new Exception("至少保证两个点来确定一条线！");
}
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);
}
}
}
//一个part
pGeomCol.AddGeometry(pSegCol as IGeometry, ref objMissing, ref objMissing);
}
}
result = pGeomCol as IPolyline;
return(result);
}
