Sun position

[fecrails]

It's important to remember that a C++ compiler (or any programming language for that matter) calculates trigonometric values in radians not degrees.
That's why the value will be between -1.5 to 1.5 which is equivalent to a value of -90 to 90 degrees of azimuth.

Why the confusion over whether the value should be negative or positive? The short answer is it all depends on whether the programmer used a north facing or south facing reference in their solar azimuth function. In this case experimentation seems to reveal they used a north facing reference, so values in the northern hemisphere will be negative. They also appear to reference the zenith as 0 radians and the horizon as 1.5 radians.

Using the numbers from my Chicago example above:

summerAzimuthAngle = (-90+71.6)π/180 = -.32

winterAzimuthAngle = (-90+24.7)π/180 = -1.14

[Bananarama]

Ah, so.



It's a wonder I got through High School at all.

[SAR704]

Had another look at this today, and changed the default TimeOfDay folder in the RailSimulatorCore folder instead of the RailSimulator one.

For once, the sun is finally shining in the north where it should be (at least in the southern hemisphere)