public void GetAngleOffsets(HorizontalCoordinate objectCoord, ref Angle horzAngle, ref Angle vertAngle)
{
Vector3 objectVector = objectCoord.ToVector();
Vector3 horzObjectCross = Vector3.Cross(objectVector, -horzAxis);
Vector3 vertObjectCross = Vector3.Cross(objectVector, vertAxis);
horzObjectCross.Normalize();
vertObjectCross.Normalize();
double x = Vector3.Dot(horzObjectCross, vertAxis);
double y = Vector3.Dot(horzObjectCross, this.ViewCenterVector);
horzAngle = -Angle.ArcTangent(y, x);
x = Vector3.Dot(vertObjectCross, horzAxis);
y = Vector3.Dot(vertObjectCross, this.ViewCenterVector);
vertAngle = -Angle.ArcTangent(y, x);
}