import * as mars3d from "mars3d"
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export let map // mars3d.Map三维地图对象
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let blackAndWhite
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// 需要覆盖config.json中地图属性参数（当前示例框架中自动处理合并）
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export const mapOptions = {
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scene: {
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center: { lat: 33.591015, lng: 119.032698, alt: 73, heading: 343, pitch: -21 }
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}
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}
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/**
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* 初始化地图业务，生命周期钩子函数（必须）
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* 框架在地图初始化完成后自动调用该函数
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* @param {mars3d.Map} mapInstance 地图对象
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* @returns {void} 无
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*/
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export function onMounted(mapInstance) {
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map = mapInstance // 记录map
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// 添加参考三维模型
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const tiles3dLayer = new mars3d.layer.TilesetLayer({
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url: "//data.mars3d.cn/3dtiles/qx-simiao/tileset.json",
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position: { alt: 80.6 },
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maximumScreenSpaceError: 1,
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maximumMemoryUsage: 1024,
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dynamicScreenSpaceError: true,
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cullWithChildrenBounds: false
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})
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map.addLayer(tiles3dLayer)
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// 构造效果
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blackAndWhite = new mars3d.effect.BlackAndWhiteEffect()
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map.addEffect(blackAndWhite)
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}
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/**
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* 释放当前地图业务的生命周期函数
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* @returns {void} 无
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*/
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export function onUnmounted() {
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map = null
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}
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export function setEnabled(val) {
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blackAndWhite.enabled = val
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}
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export function setGradations(value) {
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blackAndWhite.gradations = value
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}
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