// [TODO] no reason we couldn't start on edge midpoint??
public virtual void AppendPolygon2d(FillPolygon2d poly)
{
Vector3d currentPos = Builder.Position;
Vector2d currentPos2 = currentPos.xy;
int N = poly.VertexCount;
if (N < 2)
{
throw new Exception("PathScheduler.AppendPolygon2d: degenerate curve!");
}
int iNearest = CurveUtils2.FindNearestVertex(currentPos2, poly.Vertices);
Vector2d startPt = poly[iNearest];
Builder.AppendTravel(startPt, Settings.RapidTravelSpeed);
List <Vector2d> loopV = new List <Vector2d>(N + 1);
for (int i = 0; i <= N; i++)
{
int k = (iNearest + i) % N;
loopV.Add(poly[k]);
}
double useSpeed = select_speed(poly);
Builder.AppendExtrude(loopV, useSpeed, poly.TypeFlags, null);
}
protected virtual void BuildLoopConcrete <TSegment>(FillLoop <TSegment> rolled, double useSpeed) where TSegment : IFillSegment, new()
{
Builder.AppendExtrude(rolled.Vertices(true).ToList(), useSpeed, rolled.FillType, null);
}