private static List <TVertex> RecurseSmoothLine <TVertex>(List <TVertex> vv, CatmullCurve <TVertex> cc, float t1, float t2, TVertex vt1, TVertex vt2, float accuracy) where TVertex : IRenderVertex
{
var tMid = (t1 + t2) * 0.5f;
var vMid = cc.GetPointAt(tMid);
vMid.Smooth = true; // Generated points must always be smooth, because they are part of the curve
vMid.IsSlingshot = false; // Slingshots can"t be along curves
vMid.IsControlPoint = false; // We created this point, so it can"t be a control point
if (FlatWithAccuracy(vt1, vt2, vMid, accuracy))
{
// Add first segment point to array.
// Last point never gets added by this recursive loop,
// but that"s where it wraps around to the next curve.
vv.Add(vt1);
}
else
{
vv = RecurseSmoothLine(vv, cc, t1, tMid, vt1, vMid, accuracy);
vv = RecurseSmoothLine(vv, cc, tMid, t2, vMid, vt2, accuracy);
}
return(vv);
}