public APoint ToPoint(APoint3D p)
{
var cos2 = Math.Sqrt(1.0 - p.Y * p.Y);
var theta1 = -Math.Acos(p.X / cos2);
if (p.Z > 0)
theta1 += Math.PI;
if (p.Z <= 0 && p.X > 0)
theta1 -= Math.PI * 2;
var cx = (((theta1 - 0.5 * Math.PI) * __Width) / Math.PI + __Width) / 2.0;
if (p.Z <= 0 && p.X > 0)
cx = Math.Abs(cx);
double ly = 0.0;
ly = (1.0 + ly) / (1.0 - ly);
ly = 0.5 * Math.Log(ly);
var k = (int)(0.5 * ly * __Width / Math.PI);
ly = Math.Abs((p.Y + 1) / (p.Y - 1));
ly = Math.Abs(Math.Log(ly) / 2);
if (p.Y > 0)
ly *= -1;
var cy = __Width - (ly * __Width / Math.PI + __height) / 2.0 + k;
return APoint.Round(Math.Abs(cx), cy);
}
public static APoint3D MiddlePoint(APoint3D p1, APoint3D p2)
{
return (p1 + p2) * 0.5f;
}
