/// <summary>
/// Converts a LineString to <LineString Text> format, then
/// Appends it to the writer.
/// </summary>
/// <param name="lineString">The LineString to process.</param>
/// <param name="writer">The output stream to Append to.</param>
public void AppendLineStringTextRelative(LineString lineString, TextWriter writer)
{
if (lineString.IsEmpty())
{
//writer.Write("EMPTY");
}
else
{
writer.Write(" M ");
double currentX = lineString.GetCoordinateN(0).X;
double currentY = lineString.GetCoordinateN(0).Y;
double x=0;
double y=0;
AppendCoordinate(lineString.GetCoordinateN(0), writer, _precisionModel);
Coordinate relativeCoordinate = new Coordinate();
writer.Write(" l ");
for (int i = 1; i < lineString.GetNumPoints(); i++)
{
x = lineString.GetCoordinateN(i).X;
y = lineString.GetCoordinateN(i).Y;
relativeCoordinate.X= x- currentX;
relativeCoordinate.Y= y - currentY;
AppendCoordinate(relativeCoordinate, writer, _precisionModel);
currentX = x;
currentY = y;
if (i%5==4)
{
writer.WriteLine();
}
}
}
}
protected void AppendLineStringTextAbsolute(LineString lineString, TextWriter writer)
{
if (lineString.IsEmpty())
{
//writer.Write("EMPTY");
}
else
{
writer.Write(" M ");
AppendCoordinate(lineString.GetCoordinateN(0), writer, _precisionModel);
for (int i = 1; i < lineString.GetNumPoints(); i++)
{
writer.Write(" L ");
AppendCoordinate(lineString.GetCoordinateN(i), writer, _precisionModel);
if (i%5==4)
{
writer.WriteLine();
}
}
}
}
/// <summary>
/// Converts a LineString to <LineString Text> format, then
/// Appends it to the writer.
/// </summary>
/// <param name="lineString">The LineString to process.</param>
/// <param name="level"></param>
/// <param name="doIndent"></param>
/// <param name="writer">The output stream to Append to.</param>
protected void AppendLineStringText(LineString lineString, int level, bool doIndent, StringWriter writer)
{
if ( lineString.IsEmpty() )
{
writer.Write("EMPTY");
}
else
{
if (doIndent)
{
Indent(level, writer);
}
writer.Write("(");
for (int i = 0; i < lineString.GetNumPoints(); i++)
{
if (i > 0)
{
writer.Write(", ");
if (i % 10 == 0) Indent(level + 2, writer);
}
//AppendCoordinate(lineString.GetCoordinateN(i), writer, lineString.PrecisionModel);
AppendCoordinate( lineString.GetCoordinates()[i], writer, lineString.PrecisionModel );
}
writer.Write(")");
}
}