/// <summary>
/// 根据ShapeLib的图形类型返回SDO_GEOMETRY的图形类型
/// </summary>
/// <param name="shapeType"></param>
/// <returns></returns>
/// <remark>只处理2D图形中的普通类型，如点、线、面；不处理3D和曲线；</remark>>
public static sdogeometryTypes.GTYPE GetSdoGType(ShapeLib.ShapeType shapeType)
{
sdogeometryTypes.GTYPE gType = sdogeometryTypes.GTYPE.UNKNOWN_GEOMETRY;
switch (shapeType)
{
case ShapeLib.ShapeType.Point:
gType = sdogeometryTypes.GTYPE.POINT;
break;
case ShapeLib.ShapeType.PolyLine:
gType = sdogeometryTypes.GTYPE.LINE;
break;
case ShapeLib.ShapeType.Polygon:
gType = sdogeometryTypes.GTYPE.POLYGON;
break;
case ShapeLib.ShapeType.MultiPoint:
gType = sdogeometryTypes.GTYPE.MULTIPOINT;
break;
default:
break;
}
return gType;
}
/// <summary>
/// 根据ShapeLib的图形类型返回SDO_GEOMETRY图形的值
/// </summary>
/// <param name="shapeType"></param>
/// <returns>decimal</returns>
/// <remark>只处理2D图形中的普通类型，如点、线、面；不处理3D和曲线；</remark>>
public static double GetSdoGTypeValue(ShapeLib.ShapeType shapeType)
{
return System.Convert.ToDouble(GetSdoGType(shapeType));
}
/// <summary>
/// Creates the database file that contains meta data about the shapes.
/// </summary>
/// <param name="shapetype"></param>
/// <param name="SHPFile"></param>
private void WriteDBF(ShapeLib.ShapeType shapetype, string SHPFile, bool convertTags)
{
string filename;
int shapes = 0;
List<MetaData> elementData;
List<string> fields = new List<string>();
switch (shapetype)
{
case ShapeLib.ShapeType.Polygon:
filename = SHPFile + "-polygons";
shapes = areas;
elementData = polygonsData;
break;
case ShapeLib.ShapeType.PolyLine:
filename = SHPFile + "-lines";
shapes = ways;
elementData = linesData;
break;
case ShapeLib.ShapeType.Point:
filename = SHPFile + "-points";
shapes = points;
elementData = pointsData;
break;
default:
return;
}
IntPtr hDbf = ShapeLib.DBFCreate(filename);
if (hDbf.Equals(IntPtr.Zero))
{
Console.WriteLine("Error: Unable to create {0}.dbf!", filename);
return;
}
// add some fields. Fields have to be initialized before data is added
int iRet = ShapeLib.DBFAddField(hDbf, "shapeID", ShapeLib.DBFFieldType.FTInteger, 4, 0);
iRet = ShapeLib.DBFAddField(hDbf, "shapeName", ShapeLib.DBFFieldType.FTString, 50, 0);
// if tags have to be converted, collect the names of all tags
if (convertTags)
{
for (int iShape = 0; iShape < shapes; iShape++)
{
foreach (KeyValuePair<string, string> entry in elementData[iShape].Tags)
{
// Make sure that fields are only added once
if (!fields.Contains(entry.Key))
{
fields.Add(entry.Key);
}
}
}
// create fields in the DB for all tags
foreach (string field in fields)
{
iRet = ShapeLib.DBFAddField(hDbf, field, ShapeLib.DBFFieldType.FTString, 128, 0);
}
}
// populate
for (int iShape = 0; iShape < shapes; iShape++)
{
iRet = (ShapeLib.DBFWriteIntegerAttribute(hDbf, iShape, 0, iShape));
iRet = (ShapeLib.DBFWriteStringAttribute(hDbf, iShape, 1, elementData[iShape].Name));
// If tags should be converted, write their values to the appropriate fields
if (convertTags)
{
foreach (KeyValuePair<string, string> entry in elementData[iShape].Tags)
{
// Cut the entry after 128 characters
int stringLength = entry.Value.Length;
if (stringLength > 127)
{
stringLength = 127;
}
iRet = ShapeLib.DBFWriteStringAttribute(hDbf, iShape, fields.IndexOf(entry.Key) + 2, entry.Value.Substring(0, stringLength));
}
}
}
ShapeLib.DBFClose(hDbf);
}
