Refactor Maths.cs

[Dat-Pudding]

Description

Currently it's a semi-mess with each calculation function being a singular thing within the Maths class that inherits from ScriptableObject in Maths.cs.

Requirements

For the actual work

• forked and cloned PhotoCalc repository
• C#-capable code editor

For building and testing

• Current Unity LTS version

Tasks

You can only do the main tasks and keep the optional ones open for others or you can do them all.

Main Tasks

• Refactor the CalcXYZ() functions into the according two groups e.g. as component functions of float[] CalcExposureTime() and float[] CalcFoV()
• integrate either a "state machine" or overloaded functions to deal with incomplete arguments (e.g.: when no pixel pitch is being entered it'd nonsensical to still try and call CalcNPF())

Optional Tasks

• fix the according function calls in ExpoManager.cs and FovManager.cs
• fix the according data handling due to e.g. the exemplary change from a bunch of functions with different and identical return types to a parent function of return type float[]
  • either by building an iterator
  • or by hard-coded indices

Afterwards

When done, commit the changes to the Android branch and open a pull request according to the guidelines in the Contribution guidelines