public object GetStretcher(string fname, enumDataType inDataType, string colorTableName, out ColorMapTable <int> colorMapTable)
{
colorMapTable = null;
ProductColorTable pct = null;
if (colorTableName == null)
{
string[] parts = Path.GetFileName(fname).Split('_');
//by chennan 20120819 单通道ldf产品付色
//if (parts.Length < 3 && !fname.ToUpper().EndsWith(".DAT"))
if (parts.Length < 3)
{
return(null);
}
string productIdentify = parts[0];
string subProductIdentify = parts[1];
pct = ProductColorTableFactory.GetColorTable(productIdentify, subProductIdentify);
}
else
{
pct = ProductColorTableFactory.GetColorTable(colorTableName);
}
if (pct == null)
{
return(null);
}
//enumDataType dataType = enumDataType.Atypism;
if (inDataType == enumDataType.Atypism)
{
using (IRasterDataProvider prd = GeoDataDriver.Open(fname) as IRasterDataProvider)
{
inDataType = prd.DataType;
}
}
return(GetStretcher(inDataType, pct, out colorMapTable));
}
/// <summary>
/// 根据文件名或颜色表查找分段填色表
/// 从GeoDo.RSS.Core.RasterDrawing.DataProviderReader<T>中调用
/// </summary>
/// <param name="fname"></param>
/// <param name="colorTableName"></param>
/// <param name="colorMapTable"></param>
/// <returns></returns>
public object GetStretcher(string fname, string colorTableName, out ColorMapTable <int> colorMapTable)
{
colorMapTable = null;
return(GetStretcher(fname, enumDataType.Atypism, colorTableName, out colorMapTable));
}
public object GetStretcher(enumDataType dataType, ProductColorTable oColorMapTable, out ColorMapTable <int> colorMapTable)
{
object stretcher = null;
switch (dataType)
{
case enumDataType.Byte:
Func <byte, byte> stByte = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stByte;
break;
case enumDataType.Float:
Func <float, byte> stFloat = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stFloat;
break;
case enumDataType.Double:
Func <double, byte> stDouble = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stDouble;
break;
case enumDataType.UInt16:
Func <UInt16, byte> stUInt16 = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stUInt16;
break;
case enumDataType.Int16:
Func <Int16, byte> stInt16 = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stInt16;
break;
case enumDataType.Int32:
Func <Int32, byte> stInt32 = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stInt32;
break;
case enumDataType.UInt32:
Func <UInt32, byte> stUInt32 = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stUInt32;
break;
case enumDataType.Int64:
Func <Int64, byte> stInt64 = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stInt64;
break;
case enumDataType.UInt64:
Func <UInt64, byte> stUInt64 = (v) =>
{
for (byte i = 0; i < oColorMapTable.ProductColors.Length; i++)
{
if (v >= oColorMapTable.ProductColors[i].MinValue && v < oColorMapTable.ProductColors[i].MaxValue)
{
return((byte)(i + 1));
}
}
return(255);
};
stretcher = stUInt64;
break;
}
colorMapTable = new ColorMapTable <int>();
for (byte i = 1; i <= oColorMapTable.ProductColors.Length; i++)
{
colorMapTable.Items.Add(new ColorMapItem <int>(i, i + 1, oColorMapTable.ProductColors[i - 1].Color));
}
return(stretcher);
}
