# simplify-polyline

**Repository Path**: ArkTSCentralRepository/simplify-polyline

## Basic Information

- **Project Name**: simplify-polyline
- **Description**: A high-performance ArkTS 2D polyline simplification library.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-03-28
- **Last Updated**: 2026-03-28

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# simplify-polyline
基于[simplify-js](https://www.npmjs.com/package/simplify-js)原库1.2.4版本进行适配

> A high-performance ArkTS 2D polyline simplification library.

## Install
```sh
ohpm install simplify-polyline
```

## Type
### Point
```typescript
interface Point {
  x: number;
  y: number;
}
```

### PointArray
```typescript
type PointArray<T extends Point> = T[];
```

## API
### simplify
```typescript
function simplify<T extends Point>(
   points: PointArray<T>,
   tolerance?: number,
   highestQuality?: boolean
): PointArray<T>;
```
1. points
   要简化的折线或多边形的坐标点数组
2. tolerance
   简化容差，控制简化的程度。值越大，简化程度越高，保留的点越少，但形状变化可能越大
3. highQuality
   false：先进行径向简化，再进行 Douglas-Peucker 简化（性能更好）
   true：直接进行 Douglas-Peucker 简化（保留更多细节）

## Usage
```typescript
import simplify, {Point} from 'simplify-polyline';

const points2D: Point[] = [
    {x: 10, y: 20},
    {x: 15, y: 25},
    {x: 20, y: 30},
    {x: 25, y: 35},
    {x: 30, y: 40},
    {x: 35, y: 45},
    {x: 40, y: 50}
];

const tolerance = 1.0;
const highQuality = false;
const simplifiedPoints2D: Point[] = simplify(points2D, tolerance, highQuality);

console.log(`原始点数: ${points2D.length}`);
console.log(`简化后点数: ${simplifiedPoints2D.length}`);
console.log(`简化后坐标: ${JSON.stringify(simplifiedPoints2D)}`);
```