Simplify-Swift

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A high-performance Swift polyline simplification library

Simplify-Swift 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# SimplifySwift

[![License](https://img.shields.io/github/license/tomislav/Simplify-Swift.svg?style=flat)](https://raw.githubusercontent.com/tomislav/Simplify-Swift/master/LICENSE)

SimplifySwift is a high-performance Swift polyline simplification library ported from [Simplify.js](https://mourner.github.io/simplify-js/). The original Javascript library was extracted from [Leaflet](https://leafletjs.com), a JS interactive maps library by [Vladimir Agafonkin](https://agafonkin.com/en). It uses a combination of Douglas-Peucker and Radial Distance algorithms.

Polyline simplification dramatically reduces the number of points in a polyline while retaining its shape, giving a huge performance boost when processing it and also reducing visual noise. For example, it's essential when rendering a large polyline in MapKit.

![SimplifySwift screenshot](https://raw.githubusercontent.com/tomislav/Simplify-Swift/master/screenshot.png)

## Example

To run the example project, clone the repo and open:

`Example/Simplify-Swift.xcodeproj`

## Installation

### Swift Package Manager (SPM)

SimplifySwift `2.0.0` and later are distributed via Swift Package Manager.

To integrate using Apple's Swift package manager, add the following as a dependency to your Package.swift:

```swift
.package(url: "https://github.com/tomislav/Simplify-Swift.git", .upToNextMajor(from: "2.0.0"))
```

## Usage

```swift
static func simplify<T: SimplifyValue>(_ points: [T], tolerance: Double = 1, highQuality: Bool = false) -> [T]
```

Returns an array of simplified points

- parameter `points`:      An array of points in `SimplifyValue {x: Double, y: Double}` format. Generics are supported so you can pass `[CGPoint]`, `[CLLocationCoordinate2D]`, or your own model type.
- parameter note for `CLLocationCoordinate2D`: `xValue` maps to `latitude`, `yValue` maps to `longitude`.
- parameter `tolerance`:   Affects the amount of simplification (in the same metric as the point coordinates). Default: `1`.
- parameter `highQuality`: Excludes distance-based preprocessing step which leads to highest quality simplification but runs ~10-20 times slower. Default: false.

## Author

Tomislav Filipcic, tf@7sols.com, [@tomislav](https://twitter.com/tomislav)

## License

SimplifySwift is available under the MIT license. See the LICENSE file for more info.

Simplify-Swift

Simplify-Swift 최신버젼 다운로드

오늘의 추천 프로젝트

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Simplify-Swift 최신버젼 다운로드

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