I had to increase certain error tolerances in the unit tests.
Reworked the unit tests to make more sense by waiting until
each language step is done to check against each other.
That way I can run a single language step independently.
It turns out I was off by nearly 18 hours in the B1875 epoch.
This has a tiny effect on the orientation of the Earth's axis.
Instead of: ut = 1875-01-01T12:00:00.000Z
the correct epoch is: ut = 1874-12-31T18:12.21.950Z
See the comments in the Constellation functions in
each of the source files for more info.
Instead of using decimal hours/degrees rounded to 4 decimal places,
I went back to the original constel.c and modified it to represent
both RA and DEC in degrees, and to round all values to the nearest
quarter arcminute. This seems closer to the original intent of the
constellation boundaries.
Can now calculate the heliocentric Solar System Barycenter (SSB)
and Earth/Moon Barycenter (EMB).
Changes made in C, C#, JavaScript and Python:
Added new body codes SSB, EMB.
Added support for calculating both in HelioVector functions.
Verified that all calculations match NOVAS.
Verified that all calculations match each other across languages.
Adjust VSOP models for planets to bring their prediction errors beneath
0.1 degrees of a total orbit.
ctest no longer runs tests when no command line arguments are given.
That was annoying because I kept running it by accident.
Include an extra 4 terms in the radial component of the VSOP
model for Neptune. The code automatically picks the 4 terms
that maximize the time derivative's highest possible contribution.
Removed redundant refraction calculations from Astronomy.Horizon().
Added a unit test that InverseRefractionAngle() converges and calculates
an accurate inverse of RefractionAngle().
More work on new functions for converting orientation systems.
Changed a few classes to structs for memory allocation efficiency.
Moved stuff around in astronomy.cs so the Astronomy class comes
last. This is helpful when I want to add new functions, so I
don't have to search for the end of the class.
Starting to work on rotation functions in C#.
Added class RotationMatrix.
Split precession() into precession() and precession_rot().
Fixed problem in csdown handling type double[3,3].
I was going to write a Python program to parse the
xml file generated by the C# compiler.
The problem is it does not contain enough information
about types, as explained here:
https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/xmldoc/how-to-use-the-xml-documentation-features
"The XML file does not provide full information about the type and members
(for example, it does not contain any type information).
To get full information about a type or member, the documentation file
must be used together with reflection on the actual type or member."
So that means I will end up writing the documentation generator in C#
and using reflection along with the XML file to generate Markdown.
