Polygon

绘制三角形、菱形、五边形、正多边形、自由多边形、平滑多变形。

关键属性

width: number

正多边形的宽度。

height: number

正多边形的高度。

sides: number

正多边形的边数，取值范围为 >=3。

内部逻辑：在一个圆上每 (360 / sides) 度取一个点，再将点连成线，组成一个正多边形。

// 五边形
sides: 5

points 模式

可通过 points 定义自由多边形。

points: number[] | IPointData[]

可通过坐标数组 [ x1,y1, x2,y2, ...] 绘制自由多边形（高性能）。

或通过坐标对象数组 [ {x, y}, {x, y} ...] 绘制自由多边形 （可读性高，性能一般）。

curve: boolean | number

是否转换为平滑路径，默认为 false。

可设置 0 ～ 1 控制曲率，默认为 0.5。

路径模式

path 优先模式

圆角属性

cornerRadius: number

圆角大小，使图形拐角处变的圆滑。

继承元素

UI

示例

绘制三角形

import { Leafer, Polygon } from 'leafer-ui'

const leafer = new Leafer({ view: window })

const polygon = new Polygon({
    width: 100,
    height: 100,
    sides: 3,
    fill: 'rgb(50,205,121)'
})

leafer.add(polygon)

绘制五边形

import { Leafer, Polygon } from 'leafer-ui'

const leafer = new Leafer({ view: window })

const polygon = new Polygon({
    width: 100,
    height: 100,
    sides: 5,
    fill: 'rgb(50,205,121)'
})

leafer.add(polygon)

绘制圆角六边形

import { Leafer, Polygon } from 'leafer-ui'

const leafer = new Leafer({ view: window })

const polygon = new Polygon({
    width: 100,
    height: 100,
    sides: 6,
    cornerRadius: 10,
    fill: 'rgb(50,205,121)'
})

leafer.add(polygon)

绘制自由多边形

import { Leafer, Polygon } from 'leafer-ui'

const leafer = new Leafer({ view: window })

const polygon = new Polygon({
    points: [10, 90, 10, 10, 50, 70, 90, 10, 90, 90],  // [x,y, x,y ...]
    fill: 'rgb(50,205,121)'
})

leafer.add(polygon)

绘制平滑多边形

import { Leafer, Polygon } from 'leafer-ui'

const leafer = new Leafer({ view: window })

const polygon = new Polygon({
    points: [10, 90, 10, 10, 50, 70, 90, 10, 90, 90, 90, 90, 10, 90],  // [x,y, x,y ...]
    curve: true,
    fill: 'rgb(50,205,121)'
})

leafer.add(polygon)

绘制 0.2 曲率的平滑多边形

import { Leafer, Polygon } from 'leafer-ui'

const leafer = new Leafer({ view: window })

const polygon = new Polygon({
    points: [10, 90, 10, 10, 50, 70, 90, 10, 90, 90, 90, 90, 10, 90],  // [x,y, x,y ...]
    curve: 0.2,
    fill: 'rgb(50,205,121)'
})

leafer.add(polygon)

绘制趋势图

import { Leafer, Polygon } from 'leafer-ui'

const leafer = new Leafer({ view: window })

const polygon = new Polygon({
    points: [0, 90, 20, 60, 40, 80, 60, 40, 75, 50, 90, 10, 100, 90, 100, 90, 0, 90],
    curve: true,
    fill: 'rgb(50,205,121)'
})

leafer.add(polygon)