private WW.Cad.Drawing.Polyline2D2WN method_27(
DxfVertex2DCollection points,
bool isInterpolatedPoint)
{
bool closed = this.Closed;
int count = points.Count;
WW.Cad.Drawing.Polyline2D2WN polyline2D2Wn = new WW.Cad.Drawing.Polyline2D2WN(count, closed);
if (count > 0)
{
DxfVertex2D dxfVertex2D = points[0];
for (int index = 1; index < count; ++index)
{
DxfVertex2D point = points[index];
if (!(dxfVertex2D.Position == point.Position))
{
Vector2D unit = (point.Position - dxfVertex2D.Position).GetUnit();
Vector2D vector2D = new Vector2D(-unit.Y, unit.X);
polyline2D2Wn.Add(new Point2D2WN(dxfVertex2D.Position, dxfVertex2D.StartWidth, dxfVertex2D.EndWidth, vector2D, vector2D)
{
IsInterpolatedPoint = isInterpolatedPoint
});
dxfVertex2D = point;
}
}
if (closed)
{
DxfVertex2D point = points[0];
if (dxfVertex2D.Position != point.Position)
{
Vector2D unit = (point.Position - dxfVertex2D.Position).GetUnit();
Vector2D vector2D = new Vector2D(-unit.Y, unit.X);
polyline2D2Wn.Add(new Point2D2WN(dxfVertex2D.Position, dxfVertex2D.StartWidth, dxfVertex2D.EndWidth, vector2D, vector2D)
{
IsInterpolatedPoint = isInterpolatedPoint
});
}
}
else
{
polyline2D2Wn.Add(new Point2D2WN(dxfVertex2D.Position)
{
IsInterpolatedPoint = isInterpolatedPoint
});
}
}
return(polyline2D2Wn);
}
private WW.Cad.Drawing.Polyline2D2WN method_31(int power, int noOfSplineLineParts)
{
WW.Cad.Drawing.Polyline2D2WN polyline2D2Wn = new WW.Cad.Drawing.Polyline2D2WN();
int count = this.dxfVertex2DCollection_0.Count;
if (count <= power)
{
return(this.method_23());
}
BSplineD bsplineD = new BSplineD(power, count, this.Closed);
double[] result = new double[power + 1];
double maxU = bsplineD.MaxU;
int num1 = noOfSplineLineParts + 1;
double num2 = maxU / (double)(num1 - 1);
double num3 = 0.0;
double num4 = 0.0;
int num5 = -1;
double[,] derivatives = new double[2, power + 1];
Point2D2WN point2D2Wn1 = (Point2D2WN)null;
int num6 = 0;
double u = 0.0;
while (num6 < num1)
{
double d = (double)(count - 1) * u / maxU;
int num7 = (int)System.Math.Floor(d);
if (num5 != num7)
{
DxfVertex2D dxfVertex2D = this.dxfVertex2DCollection_0[num7 % count];
num3 = dxfVertex2D.StartWidth == 0.0 ? this.DefaultStartWidth : dxfVertex2D.StartWidth;
num4 = (dxfVertex2D.EndWidth == 0.0 ? this.DefaultEndWidth : dxfVertex2D.EndWidth) - num3;
}
double num8 = d - (double)num7;
num5 = num7;
int knotSpanIndex = bsplineD.GetKnotSpanIndex(u);
bsplineD.EvaluateBasisFunctions(knotSpanIndex, u, result);
WW.Math.Point2D zero1 = WW.Math.Point2D.Zero;
for (int index = 0; index <= power; ++index)
{
DxfVertex2D dxfVertex2D = this.dxfVertex2DCollection_0[(knotSpanIndex - power + index) % count];
zero1 += result[index] * new Vector2D(dxfVertex2D.Position);
}
bsplineD.GetDerivativesBasisFunctions(knotSpanIndex, u, 1, derivatives);
Vector2D zero2 = Vector2D.Zero;
for (int index = 0; index <= power; ++index)
{
zero2 += (Vector2D)this.dxfVertex2DCollection_0[(knotSpanIndex - power + index) % count].Position * derivatives[1, index];
}
Vector2D unit = new Vector2D(-zero2.Y, zero2.X).GetUnit();
Point2D2WN point2D2Wn2 = new Point2D2WN(zero1, num3 + num8 * num4, num3 + (num8 + num2) * num4)
{
IsInterpolatedPoint = true
};
point2D2Wn2.StartNormal = unit;
if (point2D2Wn1 != null)
{
point2D2Wn1.EndNormal = unit;
}
polyline2D2Wn.Add(point2D2Wn2);
point2D2Wn1 = point2D2Wn2;
++num6;
u += num2;
}
if (this.Closed)
{
polyline2D2Wn[num1 - 1].EndNormal = polyline2D2Wn[0].StartNormal;
}
return(polyline2D2Wn);
}