帧动画图片加载器（ImageFrameLoader）

ImageFrameLoader 提供预加载帧动画图标

示例

示例源码

import React, { useEffect, useRef, useState } from 'react'
import ReactDOM from 'react-dom'
import {
  MbImageFrameLoader,
  MbMap,
  MbSymbolLayer,
  MbTiandituLayer,
} from '@mapbox-react/core'

const App = () => {
  const [mapCenter] = useState([115.124368, 29.216049])
  const [zoom, setZoom] = useState(11)

  const symbolDataSource = [
    {
      coordinates: [115.124368, 29.216049],
      properties: {
        icon: 'vIcon',
      },
    },
    {
      coordinates: [115.124368, 29.246049],
      properties: {
        icon: 'vIcon',
      },
    },
    {
      coordinates: [115.124368, 29.186049],
      properties: {
        icon: 'hIcon',
      },
    },
    {
      coordinates: [115.324368, 29.216049],
      properties: {
        icon: 'hIcon',
      },
    },
  ]

  const images = [
    {
      name: 'hIcon',
      dir: 'h' as const,
      steps: 7,
      duration: 150,
      url: 'https://mapbox-web.github.io/mapbox-react/images/h-steps.jpeg',
    },
    {
      name: 'vIcon',
      dir: 'v' as const,
      steps: 3,
      duration: 300,
      url: 'https://mapbox-web.github.io/mapbox-react/images/v-steps.png',
    },
  ]

  return (
    <div className="map-wrapper">
      <MbMap center={mapCenter} zoom={zoom}>
        <MbImageFrameLoader images={images} />
        <MbTiandituLayer types={['vec']} />
        <MbSymbolLayer
          data={symbolDataSource}
          iconImageField="icon"
          iconSize={0.3}
          iconAllowOverlap
          textAllowOverlap
        />
      </MbMap>
    </div>
  )
}

ReactDOM.render(<App />, document.querySelector('#root'))

API

PROPS

名称	描述	类型	默认值
images	图片属性数组 数组中每个对象需包含必需的name属性以及图片相关信息	array<{ name: string; url: string; steps: number; dir?: string; duration?: number; requestInit?: RequestInit }>	-

• 组件使用fetch去请求图片数据，如果是跨域请求，请在服务端配置CORS头部，requestInit为fetch的第二个参数
• dir为截取方向，横向图片值为'h'，竖向图片值为'v'， 默认'v'
• steps为帧步骤数
• duration为每帧持续事件，单位毫秒，默认300

EVENTS

名称	描述	参数
onCreated	地图初始化完成事件	-

METHODS

名称	描述	定义