/// <summary>
/// overrides the <see cref="CustomEntity.OnDraw(OpenGlDevice)"/> method.
/// </summary>
/// <param name="Device"></param>
protected override void OnDraw(OpenGlDevice Device)
{
base.OnDraw(Device);
if (Transverse == null)
{
return;
}
if (Transverse.Count == 0)
{
return;
}
for (int i = 1; i > 0; i--)
{
if (Trace[i].dist(Trace[i - 1]) < Utils.epsilon)
{
Trace.RemoveAt(i);
}
}
if ((Trace.Count == 3) && (Trace.Closed()))
{
Trace.RemoveAt(2);
}
if (Trace.Count <= 1)
{
return;
}
// if (Trace.Count <= 1) return;
xyz Basey = new xyz(0, 0, 0);
if (Trace.Count == 2)
{
Basey = new xyz(0, 0, -1);
if ((Basey & (Trace[1] - Trace[0])).length() < 0.000001)
{
Basey = new xyz(0, -1, 0);
}
}
else
{
Basey = (((Trace[2] - Trace[1]) & (Trace[0] - Trace[1]))).normalized() * (-1);
}
for (int i = 0; i < Trace.Count - 1; i++)
{
xyz N1, N2;
if (i == 0)
{
if (Trace.Closed())
{
N1 = (Trace[i + 1] - Trace[i]).normalized() - (Trace[Trace.Count - 2] - Trace[i]).normalized();
}
else
{
N1 = (Trace[i + 1] - Trace[i]).normalized();
}
if ((i + 2) == Trace.Count)
{
N2 = (Trace[i] - Trace[i + 1]).normalized() & Basey;
}
else
{
N2 = (Trace[i] - Trace[i + 1]).normalized() - (Trace[i + 2] - Trace[i + 1]).normalized();
}
}
else
if (i == (Trace.Count - 2))
{
N1 = (Trace[i + 1] - Trace[i]).normalized() - (Trace[i - 1] - Trace[i]).normalized();
if (Trace.Closed())
{
N2 = (Trace[i] - Trace[0]).normalized() - (Trace[1] - Trace[0]).normalized();
}
else
{
N2 = (Trace[i] - Trace[Trace.Count - 1]).normalized();
}
}
else
{
N1 = (Trace[i + 1] - Trace[i]).normalized() - (Trace[i - 1] - Trace[i]).normalized();
N2 = (Trace[i] - Trace[i + 1]).normalized() - (Trace[i + 2] - Trace[i + 1]).normalized();
}
if (Trace.Count == 2)
{
N1 = Trace[1] - Trace[0];
N2 = Trace[0] - Trace[1];
}
Plane P1 = new Plane(Trace[i], N1.normalized());
Plane P2 = new Plane(Trace[i + 1], N2.normalized());
if (i > 0)
{
Basey = Matrix.Mirror(P1) * Basey - Matrix.Mirror(P1) * new xyz(0, 0, 0);
}
Base B = new Base();
B.BaseO = Trace[i];
B.BaseZ = (Trace[i + 1] - Trace[i]).normalized();
B.BaseY = Basey.normalized();
B.BaseX = (B.BaseY & B.BaseZ).normalized();
B.BaseY = B.BaseZ & B.BaseX * (-1);
Matrix BInvert = B.ToMatrix().invert();
Plane DownPlane = BInvert * P1;
Plane UpPlane = BInvert * P2;
Device.PushMatrix();
Device.MulMatrix(B.ToMatrix());
for (int m = 0; m < Transverse.Count; m++)
{
for (int n = 0; n < Transverse[m].Count; n++)
{
CurveExtruder CE = new CurveExtruder();
CE.Height = -1;
CE.DownPlane = BInvert * P1;
CE.UpPlane = BInvert * P2;
CE.Curve = Transverse[m][n];
CE.Paint(Device);
if (Device.RenderKind == RenderKind.SnapBuffer)
{
SnappItem SI = Selector.StoredSnapItems[Selector.StoredSnapItems.Count - 1];
if (SI != null)
{
SI.OfObject = this;
}
}
}
}
double L = (Trace[i + 1] - Trace[i]).length();
if ((i == 0) && (CloseFirst))
{
Device.drawPolyPolyCurve(Transverse);
}
if ((i == Trace.Count - 2) && (CloseLast))
{
Device.PushMatrix();
Device.MulMatrix(Matrix.Translation(new xyz(0, 0, L)));
Device.drawPolyPolyCurve(Transverse);
Device.PopMatrix();
}
Device.PopMatrix();
}
}