public void SphericalRadius(out float newRadius, out float zenith, out float azimuth)
{
float ex, ey, ez, cx, cy, cz, x, y, z;
float r; // radius
float s;
CCCamera pCamera = m_pTarget.Camera;
pCamera.GetEyeXyz(out ex, out ey, out ez);
pCamera.GetCenterXyz(out cx, out cy, out cz);
x = ex - cx;
y = ey - cy;
z = ez - cz;
r = (float)Math.Sqrt(x * x + y * y + z * z);
s = (float)Math.Sqrt(x * x + y * y);
if (s == 0.0f)
{
s = float.Epsilon;
}
if (r == 0.0f)
{
r = float.Epsilon;
}
zenith = (float)Math.Acos(z / r);
if (x < 0)
{
azimuth = (float)Math.PI - (float)Math.Sin(y / s);
}
else
{
azimuth = (float)Math.Sin(y / s);
}
newRadius = r / CCCamera.GetZEye();
}
