void Append(SmoothCurveElement cTo, SmoothCurveElement cAppend)
{
ParametricCurveSequence2 use = null;
if (cTo.source is ParametricCurveSequence2)
{
use = cTo.source as ParametricCurveSequence2;
}
else
{
use = new ParametricCurveSequence2();
use.Append(cTo.source);
}
if (cAppend.source is ParametricCurveSequence2)
{
var cseq = cAppend.source as ParametricCurveSequence2;
foreach (var c in cseq.Curves)
{
use.Append(c);
}
}
else
{
use.Append(cAppend.source);
}
cTo.source = use;
UpdateSampling(cTo);
}
public static IParametricCurve2d Convert(Polygon2d poly)
{
ParametricCurveSequence2 seq = new ParametricCurveSequence2();
int N = poly.VertexCount;
for (int i = 0; i < N; ++i)
{
seq.Append(new Segment2d(poly[i], poly[(i + 1) % N]));
}
seq.IsClosed = true;
return(seq);
}
public IParametricCurve2d Clone()
{
ParametricCurveSequence2 s2 = new ParametricCurveSequence2();
s2.closed = this.closed;
s2.curves = new List <IParametricCurve2d>();
foreach (var c in this.curves)
{
s2.curves.Add(c.Clone());
}
return(s2);
}
public static VectorArray2d AutoSample(ParametricCurveSequence2 curves, double fSpacingLength, double fSpacingT)
{
int N = curves.Count;
bool bClosed = curves.IsClosed;
VectorArray2d[] vecs = new VectorArray2d[N];
int i = 0;
int nTotal = 0;
foreach (IParametricCurve2d c in curves.Curves)
{
vecs[i] = AutoSample(c, fSpacingLength, fSpacingT);
nTotal += vecs[i].Count;
i++;
}
int nDuplicates = (bClosed) ? N : N - 1; // handle closed here...
nTotal -= nDuplicates;
VectorArray2d final = new VectorArray2d(nTotal);
int k = 0;
for (int vi = 0; vi < N; ++vi)
{
VectorArray2d vv = vecs[vi];
// skip final vertex unless we are on last curve (because it is
// the same as first vertex of next curve)
int nStop = (bClosed || vi < N - 1) ? vv.Count - 1 : vv.Count;
final.Set(k, nStop, vv);
k += nStop;
}
return(final);
}