// [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 ElementLocation FindLoopEntryPoint(FillLoop poly, Vector2d currentPos2)
{
int startIndex;
if (Settings.Part.ZipperAlignedToPoint && poly.FillType.IsEntryLocationSpecified())
{
// split edges to position zipper closer to the desired point?
// TODO: Enter midsegment
Vector2d zipperLocation = new Vector2d(Settings.Part.ZipperLocationX, Settings.Part.ZipperLocationY);
startIndex = CurveUtils2.FindNearestVertex(zipperLocation, poly.Vertices(true));
}
else if (Settings.Part.ShellRandomizeStart && poly.FillType.IsEntryLocationSpecified())
{
// split edges for a actual random location along the perimeter instead of a random vertex?
Random rnd = new Random();
startIndex = rnd.Next(poly.ElementCount);
}
else
{
// use the vertex closest to the current nozzle position
startIndex = CurveUtils2.FindNearestVertex(currentPos2, poly.Vertices(true));
}
return(new ElementLocation(startIndex, 0));
}
