public void SplitByLatitude(double splitLat, out ShapePolyline lPly, out ShapePolyline rPly)
{
lPly = rPly = null;
List <ShapeLineString> lStrings = new List <ShapeLineString>();
List <ShapeLineString> rStrings = new List <ShapeLineString>();
foreach (ShapeLineString str in _parts)
{
ShapeLineString lString = null, rString = null;
str.SplitByLatitude(splitLat, out lString, out rString);
if (lString != null)
{
lStrings.Add(lString);
}
if (rString != null)
{
rStrings.Add(rString);
}
}
if (lStrings.Count > 0)
{
lPly = new ShapePolyline(lStrings.ToArray());
}
if (rStrings.Count > 0)
{
rPly = new ShapePolyline(rStrings.ToArray());
}
}
public void SplitByLatitude(double splitLat, out ShapeLineString lLineString, out ShapeLineString rLineString)
{
lLineString = rLineString = null;
List <ShapePoint> lPoints = new List <ShapePoint>();
List <ShapePoint> rPoints = new List <ShapePoint>();
foreach (ShapePoint pt in _points)
{
if (pt.Y > splitLat)
{
rPoints.Add(pt);
}
else
{
lPoints.Add(pt);
}
}
if (lPoints.Count > 2)
{
lLineString = new ShapeLineString(lPoints.ToArray());
}
if (rPoints.Count > 2)
{
rLineString = new ShapeLineString(rPoints.ToArray());
}
}
public void SplitByLongitude(double splitLon, out List <ShapeRing> lRings, out List <ShapeRing> rRings)
{
lRings = null;
rRings = null;
ShapeLineString leftLineString = null;
ShapeLineString rightLineString = null;
SplitByLongitude(splitLon, out leftLineString, out rightLineString);
//
if (leftLineString != null)
{
lRings = new List <ShapeRing>();
if (leftLineString.Points.Length > 2)
{
lRings.Add(new ShapeRing(leftLineString.Points));
}
}
if (rightLineString != null)
{
rRings = new List <ShapeRing>();
if (rightLineString.Points.Length > 2)
{
rRings.Add(new ShapeRing(rightLineString.Points));
}
}
}
public override object Clone()
{
if (_parts == null || _parts.Length == 0)
{
return(null);
}
ShapeLineString[] parts = new ShapeLineString[_parts.Length];
for (int i = 0; i < parts.Length; i++)
{
parts[i] = _parts[i].Clone() as ShapeLineString;
}
return(new ShapePolyline(parts));
}
private object ConstructPolylineM(BinaryReader br, int oid)
{
Envelope evp = new Envelope(ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)));
int nParts = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
int nPoints = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
int[] firstPoints = new int[nParts];
for (int i = 0; i < nParts; i++)
{
firstPoints[i] = ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
}
ShapePoint[] pts = new ShapePoint[nPoints];
for (int i = 0; i < nPoints; i++)
{
pts[i] = new ShapePoint(ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)),
ToLocalEndian.ToDouble64FromLittle(br.ReadBytes(8)));
}
//ShapeLineString
ShapeLineString[] Lines = new ShapeLineString[nParts];
for (int i = 0; i < nParts; i++)
{
int bIdx = firstPoints[i];
int eIdx = 0;
if (nParts == 1 || i == nParts - 1)
{
eIdx = nPoints;
}
else
{
eIdx = firstPoints[i + 1];
}
ShapePoint[] rpts = new ShapePoint[eIdx - bIdx];
for (int j = bIdx; j < eIdx; j++)
{
rpts[j - bIdx] = pts[j];
}
Lines[i] = new ShapeLineString(rpts);
}
//
br.ReadBytes(2 * 8); //M Range
br.ReadBytes(nPoints * 8); //M Array
//
ShapePolyline ply = new ShapePolyline(Lines, evp);
Feature f = new Feature(oid, ply, GetFieldNames(), GetFieldValues(oid), GetAnnotation(oid));
return(f);
}
public override string ToWkt()
{
if (_parts == null || _parts.Length == 0)
{
return(null);
}
StringBuilder sb = new StringBuilder();
sb.Append("MULTILINESTRING(");
for (int i = 0; i < _parts.Length; i++)
{
ShapeLineString part = _parts[i];
if (part.Points == null || part.Points.Length == 0)
{
continue;
}
sb.Append("(");
for (int j = 0; j < part.Points.Length; j++)
{
ShapePoint pt = part.Points[j];
sb.Append(pt.X.ToString());
sb.Append(" ");
sb.Append(pt.Y.ToString());
if (j != part.Points.Length - 1)
{
sb.Append(",");
}
}
sb.Append(")");
if (i != _parts.Length - 1)
{
sb.Append(",");
}
}
sb.Append(")");
return(sb.ToString());
}
