private static CadVertex ForEachBezierSegs4 <T>(
CadVertex p0, CadVertex p1, CadVertex p2, CadVertex p3, int s, Action <CadVertex, CadVertex, T> action, T param)
{
double t = 0;
double d = 1.0 / (double)s;
t = d;
int n = 4;
CadVertex t0 = p0;
CadVertex t1 = p0;
while (t <= 1.0)
{
t1 = default;
t1 += p0 * BezierFuncs.BernsteinBasisF(n - 1, 0, t);
t1 += p1 * BezierFuncs.BernsteinBasisF(n - 1, 1, t);
t1 += p2 * BezierFuncs.BernsteinBasisF(n - 1, 2, t);
t1 += p3 * BezierFuncs.BernsteinBasisF(n - 1, 3, t);
action(t0, t1, param);
t0 = t1;
t += d;
}
return(t1);
}
public static CadVertex DrawBezier4(
CadVertex p0, CadVertex p1, CadVertex p2, CadVertex p3, int s, DrawContext dc, DrawPen pen)
{
double t = 0;
double d = 1.0 / (double)s;
t = d;
int n = 4;
CadVertex t0 = p0;
CadVertex t1 = p0;
while (t <= 1.0)
{
t1 = default;
t1 += p0 * BezierFuncs.BernsteinBasisF(n - 1, 0, t);
t1 += p1 * BezierFuncs.BernsteinBasisF(n - 1, 1, t);
t1 += p2 * BezierFuncs.BernsteinBasisF(n - 1, 2, t);
t1 += p3 * BezierFuncs.BernsteinBasisF(n - 1, 3, t);
dc.Drawing.DrawLine(pen, t0.vector, t1.vector);
t0 = t1;
t += d;
}
return(t1);
}
private static CadVertex ForEachBezierPoints4 <T>(
CadVertex p0, CadVertex p1, CadVertex p2, CadVertex p3, int scnt, bool excludeEdge, Action <CadVertex, T> action, T param)
{
double t = 0;
double d = 1.0 / (double)scnt;
double e = 1.0;
t = d;
int n = 4;
CadVertex t0 = p0;
CadVertex t1 = p0;
if (excludeEdge)
{
e -= d;
}
else
{
action(t0, param);
}
while (t <= e)
{
t1 = default(CadVertex);
t1 += p0 * BezierFuncs.BernsteinBasisF(n - 1, 0, t);
t1 += p1 * BezierFuncs.BernsteinBasisF(n - 1, 1, t);
t1 += p2 * BezierFuncs.BernsteinBasisF(n - 1, 2, t);
t1 += p3 * BezierFuncs.BernsteinBasisF(n - 1, 3, t);
action(t1, param);
t += d;
}
return(t1);
}
