public OrbitPanel()
{
this.DoubleBuffered = true;
PlanetPos = new Xyz[9];
OrbitDisplay = new bool[11];
PlanetOrbit = new PlanetOrbit[9];
Offscreen = null;
PaintEnabled = false;
}
private void DrawPlanetOrbit(Graphics graphics, PlanetOrbit planetOrbit, Color colorUpper, Color colorLower)
{
Pen pen = new Pen(colorUpper);
Point point1, point2;
Xyz xyz = planetOrbit.GetAt(0).Rotate(MtxToEcl).Rotate(MtxRotate);
point1 = GetDrawPoint(xyz);
for (int i = 1; i <= planetOrbit.Division; i++)
{
xyz = planetOrbit.GetAt(i).Rotate(MtxToEcl);
pen.Color = xyz.Z >= 0.0 ? colorUpper : colorLower;
xyz = xyz.Rotate(MtxRotate);
point2 = GetDrawPoint(xyz);
graphics.DrawLine(pen, point1.X, point1.Y, point2.X, point2.Y);
point1 = point2;
}
}