private IEnumerable <Path2D> convertToPaths(IEnumerable <IPolygon> polygons)
{
Path2D gp = new Path2D();
foreach (IPolygon polygon in polygons)
{
if (polygon.IsEmpty)
{
continue;
}
// Add the exterior polygon
gp.NewFigure(convertCoordinates(polygon.ExteriorRing.Coordinates), true);
// Add the interior polygons (holes)
foreach (ILinearRing ring in polygon.InteriorRings)
{
gp.NewFigure(convertCoordinates(ring.Coordinates), true);
}
}
yield return(gp);
}
// TODO: these next two methods would benefit from handling TCoordinates
private IEnumerable <Path2D> convertToPaths(IEnumerable <ILineString> lines)
{
Path2D gp = new Path2D();
foreach (ILineString line in lines)
{
if (line.IsEmpty || line.PointCount <= 1)
{
continue;
}
gp.NewFigure(convertCoordinates(line.Coordinates), false);
}
yield return(gp);
}