//按mars3d规范，将CesiumVectorTile封装下
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//CesiumVectorTile的API文档，解压Document.rar后参考 Document/Cesium.VectorTileImageryProvider.html
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;(function (window) {
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class WeiVectorTileLayer extends mars3d.layer.BaseTileLayer {
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//构建ImageryProvider
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_createImageryProvider(options) {
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return createImageryProvider(options)
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}
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}
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function createImageryProvider(options) {
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return new Cesium.VectorTileImageryProvider(options)
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}
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WeiVectorTileLayer.createImageryProvider = createImageryProvider
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//注册下
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const layerType = 'weiVectorTile' //图层类型
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mars3d.LayerUtil.register(layerType, WeiVectorTileLayer)
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mars3d.LayerUtil.registerImageryProvider(layerType, createImageryProvider)
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//对外接口
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window.mars3d.layer.WeiVectorTileLayer = WeiVectorTileLayer
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})(window)
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