A bit late reply but shapefiles don't allow curved line defined by only 3 points.
As you already expected you need to calculate the linestrings along the curve.
Other vector formats are slowly adding support for curves, but so far MapWinGIS doesn't support them.
Regards,
Paul
As you already expected you need to calculate the linestrings along the curve.
Other vector formats are slowly adding support for curves, but so far MapWinGIS doesn't support them.
Regards,
Paul
