Cesium直接加载Shape文件，Js解析Shape文件库

晨风 2021-07-22 PM 459℃ 0条

原仓库地址：https://github.com/calvinmetcalf/shapefile-js

使用：

```javascript
var base = 'data/shp.zip'; // shp文件zip压缩包或单独的shp文件路径
shp(base).then(function (data) {
	var promise = Cesium.GeoJsonDataSource.load(data);
	promise.then(function (dataSource) {
	  gisViewer.getViewer().dataSources.add(dataSource);
	  var entities = dataSource.entities.values;
	  var colorHash = {};
	  gisViewer.getViewer()._cesiumWidget._creditContainer.style.display = "none";
	  for (var i = 0; i < entities.length; i++) {
		var entity = entities[i];
		var name = entity.name;
		var color = colorHash[name];
		if (!color) {
		  color = Cesium.Color.fromRandom({
			alpha: 0.4
		  });
		  colorHash[name] = color;
		}
		entity.polygon.classificationType = Cesium.ClassificationType.TERRAIN;
		entity.polygon.material = Cesium.Color.WHITE.withAlpha(0.3);
		entity.polygon.outline = true;
		entity.polygon.outlineColor = Cesium.Color.BLUE.withAlpha(1);
		entity.polygon.outlineWidth = 2;
		entity.polygon.distanceDisplayCondition = new Cesium.DistanceDisplayCondition(3000, 10000000000);
		var polyPositions = entity.polygon.hierarchy.getValue(Cesium.JulianDate.now()).positions;
		var polyCenter = Cesium.BoundingSphere.fromPoints(polyPositions).center;
		polyCenter = Cesium.Ellipsoid.WGS84.scaleToGeodeticSurface(polyCenter);
		entity.position = polyCenter;

}
});

```

标签: cesium

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