public DataTable GetPointsFromRoadLayer(int needPointsCount, MapLayer vectorLayer)
{
if (vectorLayer.shapeType != ShapeTypeConstants.moShapeTypeLine)
{
throw new Exception("请确定给定的图层是线类型。");
}
DataTable dtResult = new RandomPointsDataTableStruct();
// List<Point> oResult = new List<Point>();
Recordset oRecords = vectorLayer.Records;
int iCounter = 1;
int iGeoId = 0;
oRecords.MoveFirst();
while (!oRecords.EOF)
{
Line oCurGeometry = oRecords.Fields.Item("shape").Value as Line;
iGeoId++;
if (oCurGeometry != null)
{
short iPartsCount = oCurGeometry.Parts.Count;
for (int i = 0; i < iPartsCount; i++)
{
Points oPoints = oCurGeometry.Parts.Item(i) as Points;
for (int j = 0; j < oPoints.Count; j++)
{
if (iCounter <= needPointsCount)
{
DataRow dr = dtResult.NewRow();
dr["geoid"] = iGeoId.ToString();
dr["x"] = (oPoints.Item(j) as Point).X;
dr["y"] = (oPoints.Item(j) as Point).Y;
dtResult.Rows.Add(dr);
iCounter++;
}
else
{
return(dtResult);
}
}
}
}
oRecords.MoveNext();
}
return(dtResult);
}
public DataTable GetPointsFromRoadLayer(int needPointsCount, MapLayer vectorLayer)
{
if (vectorLayer.shapeType != ShapeTypeConstants.moShapeTypeLine)
throw new Exception("��ȷ��������ͼ���������͡�");
DataTable dtResult = new RandomPointsDataTableStruct();
// List<Point> oResult = new List<Point>();
Recordset oRecords = vectorLayer.Records;
int iCounter = 1;
int iGeoId = 0;
oRecords.MoveFirst();
while (!oRecords.EOF)
{
Line oCurGeometry = oRecords.Fields.Item("shape").Value as Line;
iGeoId++;
if (oCurGeometry != null)
{
short iPartsCount = oCurGeometry.Parts.Count;
for (int i = 0; i < iPartsCount; i++)
{
Points oPoints = oCurGeometry.Parts.Item(i) as Points;
for (int j = 0; j < oPoints.Count; j++)
{
if (iCounter <= needPointsCount)
{
DataRow dr = dtResult.NewRow();
dr["geoid"] = iGeoId.ToString();
dr["x"] = (oPoints.Item(j) as Point).X;
dr["y"] = (oPoints.Item(j) as Point).Y;
dtResult.Rows.Add(dr);
iCounter++;
}
else
{
return dtResult;
}
}
}
}
oRecords.MoveNext();
}
return dtResult;
}