Provides an abstraction for mathematical angle. Because the angle is a type, errors such as:

- sum or subtract a degree angle with a radian angle
- pass degree angle to a trigonometric function from standard library

are either not possible or catched at compile time. Support convenience initializers, operators and functions for natural, fast and productive workflow.

## Table of contents

## Usage

### Importing the module

You can import this module using:

```
import DLAngle
```

### Creation

```
let degree = Degree(rawValue: 90.0)
let zeroDegrees = Degree()
let radian = Radian(rawValue: Double.pi / 2)
let zeroRadians = Radian()
```

### Converting between Degree and Radian

From Degree to Radian:

```
let degree = Degree(rawValue: 90.0)
let radian = Radian(degree: degree)
```

From Radian to Degree:

```
let radian = Radian(rawValue: Double.pi)
let degree = Degree(radian: radian)
```

### Basic Operations

Addition

```
let radian = Radian(degrees: 90.0)
radian += Radian(degress: 45.0)
// radian.rawValue = 3 * Double.pi / 4
```

Subtraction

```
var degrees = Degree(radians: Double.pi / 2)
degrees = degrees - Degree(radians: Double.pi / 6)
// degrees.rawValue = 60.0
```

Multiplcation

```
let half = Radian(rawValue: Double.pi / 2)
let pi = one * 2
// '2 * one' works as well
```

Division

```
let pi = Radian(rawValue: Double.pi)
let sixtyDegreesRadian = one / 3
// '1 / pi' works as well
```

### Normalization

```
let degree = Degree(rawValue: 750.0)
degree.normalize()
// degree.rawValue = 30.0
let angle1 = Radian(rawvalue: 7 * Double.pi)
let angle2 = angle1.normalized()
// angle2.rawValue = Double.pi
```

### Equality

```
let angle1 = Radian(rawValue: Double.pi)
let angle2 = Radian(degrees: 180.0)
angle1 == angle2 // true
```

### Comparison

```
let angle1 = Radian(rawValue: Double.pi)
let angle2 = Radian(degrees: 90.0)
angle1 < angle2 // false
```

### Foundation.Measurement conversion

```
let angleMeasurement = Measurement<UnitAngle>(value: 45.0, unit: .degrees)
let radian = Radian(measurement: angleMeasurement)
radian.measurement // Measurement<UnitAngle>(value: Double.pi / 4, unit: .radians)
let degrees = Degrees(measurement: angleMeasurement)
degrees.measurement // Measurement<UnitAngle>(value: 45.0, unit: .degrees)
```

### Inverse trigonometric functions

Inverse functions are provided by using convenience constructors of Radian type.

```
do {
let angle = try Radian(acos: -1.0)
} catch {
// handle error
}
```

### Trigonometric functions

```
let angle = Radian(degrees: 45.0)
if let sin: Double = try? angle.sin() {
// use computed sine value
}
```

### Constants

Frequently used Radian angles have constants:

```
let pi = Radian.pi
let half_quadrant_II = Radian.pi_2 + Radian.pi_4
```

## Installation

### Supported Operating Systems

**macOS**10.12 and later**iOS**10.0 and later**watchOS**3.0 and later**tvOS**10.0 and later**Ubuntu**- check official site to find which versions support Swift 4.0.

### 1. Carthage

```
github "davidlivadaru/DLAngle"
```

If you need the framework only for a single OS, then I propose to use `--platform [iOS|macOS|watchOS|tvOS]`

specifier when your perform `carthage update`

.

### 2. CocoaPods

Add the dependency in your `Podfile`

.

```
pod 'DLAngle'
```

### 3. Swift Package Manager

Add the the following dependecy in your `Package.swift`

:

```
dependencies: [
.package(url: "https://github.com/davidlivadaru/DLAngle.git", .upToNextMajor(from: "1.0.0"))
]
```

and update your target's dependencies:

```
targets: [
.target(
name: "YourTargetName",
dependencies: ["DLAngle"])),
]
```

## Contribution

Module is covered by unit tests, however, bugs always slip through. If you find a bug in the module create an issue.

If you want to contribute on fixing bugs or implementing new features then create a pull request.

## License

**DLAngle** is released under MIT license. See LICENSE for details.

## Github

link |

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##### Help us keep the lights on

## Dependencies

## Releases

## 1.0.1 - Mar 25, 2018

Update deployment target to 10.12 for macOS.