unit

Enumerations

enum UnitType

Name	Value
None	0
Other	1
Distance	2
Weight	3
Rotation	4
AngularVelocity	5
LinearVelocity	6
Acceleration	7
MagneticFlux	8
Light	9
Pressure	10
Lux	11

UnitTypes are the helpful, "default" units in the system.

These should used throughout the system.

Defined at line 16 of file ../../src/ui/input/lib/hid-parser/include/lib/hid-parser/units.h

enum System

Name	Value
si_linear	0x1
si_rotation	0x2
eng_linear	0x3
eng_rotation	0x4
reserved	0x5

Each system defines the units for the following measurements:

length, mass, time, temperature, current, luminous intensity.

Defined at line 59 of file ../../src/ui/input/lib/hid-parser/include/lib/hid-parser/units.h

Records

```
class UnitConversion
```

Functions

```
Unit GetUnitFromUnitType (UnitType type)
```
Get the exact unit from the UnitType.

Defined at line 370 of file ../../src/ui/input/lib/hid-parser/units.cc
```
UnitType GetUnitTypeFromUnit (const Unit & unit)
```
Get the closest convertible UnitType from the unit.

If the unit cannot be converted into a UnitType, |Other| will be returned.

If there are no unit's, |None| will be returned.

Defined at line 380 of file ../../src/ui/input/lib/hid-parser/units.cc
```
double ConvertValToUnitType (const Unit & unit_in, double val_in)
```
Defined at line 392 of file ../../src/ui/input/lib/hid-parser/units.cc
```
void SetSystem (Unit & unit, hid::unit::System system)
```
Sets a Unit's system. A unit can only belong to a single system.

Calling SetSystem on a Unit that already has a system defined

will overwrite the current system.

Defined at line 184 of file ../../src/ui/input/lib/hid-parser/units.cc
```
hid::unit::System GetSystem (const Unit & unit)
```
Defined at line 188 of file ../../src/ui/input/lib/hid-parser/units.cc
```
void SetLengthExp (Unit & unit, int8_t exp)
```
The functions below set the exponent for various measurements.

exp must be within [-8, 7].

The measurement's unit is defined by the Unit's system.

Example: Momentum is (mass * distance / time) so it has a mass

exponent of 1, a distance exponent of 1, and a time

exponent of -1. Under the SI Linear system this would

be (gram * centimeter / seconds).

Defined at line 204 of file ../../src/ui/input/lib/hid-parser/units.cc
```
void SetMassExp (Unit & unit, int8_t exp)
```
Defined at line 206 of file ../../src/ui/input/lib/hid-parser/units.cc
```
void SetTimeExp (Unit & unit, int8_t exp)
```
Defined at line 208 of file ../../src/ui/input/lib/hid-parser/units.cc
```
void SetTemperatureExp (Unit & unit, int8_t exp)
```
Defined at line 210 of file ../../src/ui/input/lib/hid-parser/units.cc
```
void SetCurrentExp (Unit & unit, int8_t exp)
```
Defined at line 214 of file ../../src/ui/input/lib/hid-parser/units.cc
```
void SetLuminousExp (Unit & unit, int8_t exp)
```
Defined at line 216 of file ../../src/ui/input/lib/hid-parser/units.cc
```
int GetLengthExp (const Unit & unit)
```
The functions below get the exponent for various measurements.

The return value will be within [-8, 7].

Defined at line 218 of file ../../src/ui/input/lib/hid-parser/units.cc
```
int GetMassExp (const Unit & unit)
```
Defined at line 220 of file ../../src/ui/input/lib/hid-parser/units.cc
```
int GetTimeExp (const Unit & unit)
```
Defined at line 222 of file ../../src/ui/input/lib/hid-parser/units.cc
```
int GetTemperatureExp (const Unit & unit)
```
Defined at line 224 of file ../../src/ui/input/lib/hid-parser/units.cc
```
int GetCurrentExp (const Unit & unit)
```
Defined at line 226 of file ../../src/ui/input/lib/hid-parser/units.cc
```
int GetLuminousExp (const Unit & unit)
```
Defined at line 228 of file ../../src/ui/input/lib/hid-parser/units.cc
```
bool ConvertUnits (const Unit & unit_indouble val_inconst Unit & unit_outdouble * val_out)
```
Convert a value from one unit to another.

Returns False if it is impossible to do the conversion.

Defined at line 230 of file ../../src/ui/input/lib/hid-parser/units.cc