Units core

Define your units and use them to check your code for physical correctnes.

Define your own units

units.txt

Units(Base) := Mass | Length | Time
Units(Prefixes) := (mili, i/1000) | (micro, i/10e-6) | (kilo, i*1000) | (mega, i*1e6)
Operators(Binary) := (*, Times, 1, 1) | (/, Per, 1, -1)
Operators(Unary) := (Square, 2) | (SquareRoot, 0.5)
Operators(Self) := (<, Lt, bool) | (>, Gt, bool) | (==, Eq, bool) | (+, Plus, null) | (-, Minus, null) | (*, Times, null) | (/, Per, null)

Real(Types) := (System.Single, RealFloat) | (Godot.Vector3, Vec3)

Operator(*) := a = b * c | a = c * b | c = a / b | b = a / c
Operator(/) := a = b / c | c = b / a | b = a * c | b = c * a
Operator(Square) := a = Square b | b = SquareRoot a | a = b * b
Operator(SquareRoot) := a = SquareRoot b | b = Square a | b = a * a

Speed := Length / Time
Acceleration := Speed / Time
Area := Length * Length
Volume := Area * Length
Force := Mass * Acceleration
Pressure := Force / Area
Energy := Force * Length

!Infer

Unit(Mass) := gram(i, g)
Unit(Length) := meter(i, m)
Unit(Time) := second(i, s) | hour(i/3600, h) | minute(i/60, min)
Unit(Temperature) := kelvin(i, K) | celsius(i + 273, ˙C)
Unit(Force) := newton(i, N)

!Export Units ./Units.cs
!Export RealWrapers ./Wrapers.cs

Generate cs types

• Using cli of the units-core tool > units-core ./units.txt
• Or Run Sample project > dotnet run Units.Core.Sample

Use generated struct to help you keep track of the units you defined

Comparison with UnitsNet

UnitsNet is good as long as you are just using the units they provide. The goal of this project is to permit user to define units that self wants to use.