* @private * @function createMapOptions * @description 获取地图参数。 * @param {string} url - rest 地图服务地址。 * @param {Object} resetServiceInfo - rest 地图服务信息。 * @param {Object} [options] - 参数。 * @param {string} [options.type] - 服务代理地址。 * @param {Object} [options.mapOptions] - 地图配置。 * @param {Object}
(url, resetServiceInfo, options)
| 153 | * @returns {Object} mapParams。 |
| 154 | */ |
| 155 | async function createMapOptions(url, resetServiceInfo, options) { |
| 156 | if (options.type && !['raster', 'vector-tile'].includes(options.type)) { |
| 157 | return Promise.reject(new Error('type must be "raster" or "vector-tile".')); |
| 158 | } |
| 159 | const sourceType = options.type || 'raster'; |
| 160 | const mapOptions = options.mapOptions || {}; |
| 161 | const { |
| 162 | prjCoordSys: { epsgCode }, |
| 163 | bounds, |
| 164 | center, |
| 165 | dpi, |
| 166 | coordUnit, |
| 167 | scale |
| 168 | } = resetServiceInfo; |
| 169 | let mapCenter = center ? [center.x, center.y] : [0, 0]; |
| 170 | let crs = `EPSG:${epsgCode}`; |
| 171 | let extent = bounds; |
| 172 | let tileUrl = |
| 173 | sourceType === 'vector-tile' |
| 174 | ? Util.urlAppend(Util.urlPathAppend(url, 'tileFeature/vectorstyles.json'), 'type=MapBox_GL&styleonly=true&tileURLTemplate=ZXY') |
| 175 | : url; |
| 176 | tileUrl = SecurityManager.appendCredential(tileUrl); |
| 177 | let nonEnhanceExtraInfo = {}; |
| 178 | let enhanceExtraInfo = {}; |
| 179 | let zoom; |
| 180 | let tileSize = 512; |
| 181 | let tileFormat = 'png'; |
| 182 | if (maplibregl.CRS) { |
| 183 | const baseProjection = crs; |
| 184 | const wkt = await options.initMapService.getWKT(); |
| 185 | let vectorTileInfo; |
| 186 | if (sourceType === 'vector-tile') { |
| 187 | vectorTileInfo = await getVectorTileCRSExtent(tileUrl, url); |
| 188 | extent = vectorTileInfo.extent; |
| 189 | } |
| 190 | crs = defineCRSByWKT(baseProjection, wkt, extent); |
| 191 | if (sourceType === 'raster') { |
| 192 | enhanceExtraInfo.rasterSource = 'iserver'; |
| 193 | } |
| 194 | if (vectorTileInfo && vectorTileInfo.center) { |
| 195 | mapCenter = vectorTileInfo.center; |
| 196 | } else { |
| 197 | mapCenter = transformMapCenter(mapCenter, baseProjection); |
| 198 | } |
| 199 | |
| 200 | const tilesets = await options.initMapService.getTilesets(); |
| 201 | const tileset = getTileset(tilesets.result, { prjCoordSys: resetServiceInfo.prjCoordSys, tileType: 'Image' }); |
| 202 | |
| 203 | if (tileset) { |
| 204 | tileFormat = getTileFormat(tileset); |
| 205 | const maxWidth = Math.max(tileset.bounds.right - tileset.originalPoint.x, tileset.originalPoint.y - tileset.bounds.bottom); |
| 206 | const tileCount = maxWidth / (tileset.resolutions[0] * 256); |
| 207 | zoom = Math.ceil(Math.log2(tileCount)); |
| 208 | const closestTileCount = Math.pow(2, zoom); |
| 209 | const width = closestTileCount * 256 * tileset.resolutions[0]; |
| 210 | const crsBounds = [ |
| 211 | tileset.originalPoint.x, |
| 212 | tileset.originalPoint.y - width, |
no test coverage detected