mirror of
https://github.com/jiawanlong/Cesium-Examples.git
synced 2025-11-04 09:14:17 +00:00
136 lines
4.8 KiB
JavaScript
136 lines
4.8 KiB
JavaScript
/* COPYRIGHT 2012 SUPERMAP
|
||
* 本程序只能在有效的授权许可下使用。
|
||
* 未经许可，不得以任何手段擅自使用或传播。*/
|
||
|
||
/**
|
||
* @requires SuperMap/Util.js
|
||
* @requires SuperMap/BaseTypes/Bounds.js
|
||
* @requires SuperMap/CanvasLayer.js
|
||
*/
|
||
|
||
/**
|
||
* Class: SuperMap.Layer.Siweidg
|
||
* 云服务图层类。
|
||
* 通过向SuperMap 云服务器发送请求得到 SuperMap 云服务发布的图层。
|
||
*
|
||
* Inherits from:
|
||
* - <SuperMap.Layer.CanvasLayer>
|
||
*/
|
||
|
||
SuperMap.Layer.Siweidg = SuperMap.Class(SuperMap.CanvasLayer, {
|
||
|
||
/**
|
||
* APIProperty: name
|
||
* {String} 图层标识名称，默认为：Siweidg。
|
||
*/
|
||
name: "Siweidg",
|
||
|
||
/**
|
||
* APIProperty: url
|
||
* {String} 地图资源地址。默认为：http://www.isupermap.com/services/map-siweidg/rest/maps/${layerType}/tileImage.png?transparent=true&cacheEnabled=true&width=256&height=256&x=${x}&y=${y}&scale=${scale}
|
||
*/
|
||
url: 'http://www.isupermap.com/services/map-siweidg/rest/maps/${layerType}/tileImage.png?transparent=true&cacheEnabled=true&width=256&height=256&x=${x}&y=${y}&scale=${scale}',
|
||
|
||
/**
|
||
* APIProperty: mapName
|
||
* {String} 地图名称，默认为 siweidg。
|
||
*/
|
||
mapName: "siweidg",
|
||
|
||
/**
|
||
* Property: layerType
|
||
* {String} 地图类型，支持影像（image)，矢量（vector），透明图(transparent)等。
|
||
*/
|
||
layerType: "vector",
|
||
|
||
scales: [1.6901635716026557e-9, 3.3803271432053114e-9, 6.760654286410623e-9, 1.3521308572821245e-8, 2.704261714564249e-8, 5.408523429128498e-8, 1.0817046858256996e-7, 2.1634093716513993e-7, 4.3268187433027985e-7, 8.653637486605597e-7, 0.0000017307274973211194, 0.000003461454994642239, 0.000006922909989284478, 0.000013845819978568955, 0.00002769163995713791, 0.00005538327991427582, 0.00011076655982855164, 0.00022153311965710329, 0.00044306623931420657],
|
||
|
||
/**
|
||
* Constructor: SuperMap.Layer.CloudLayer
|
||
* 云服务图层类。
|
||
*
|
||
* Parameters:
|
||
* layerType - {string} 设置地图类型
|
||
* options - {Object} 附加到图层属性上的可选项。
|
||
*/
|
||
initialize: function (options) {
|
||
var me = this;
|
||
//四维地图提供固定范围，比例尺的瓦片信息
|
||
options = SuperMap.Util.extend({
|
||
maxExtent: new SuperMap.Bounds(
|
||
-2.00375083427892E7,
|
||
-2.00375083427892E7,
|
||
2.00375083427892E7,
|
||
2.00375083427892E7
|
||
),
|
||
//第19级分辨率为0.298817952474，但由于绝大部分城市和地区在此级别都无图，所以暂不增加
|
||
// resolutions: [156605.46875, 78302.734375, 39151.3671875, 19575.68359375, 9787.841796875, 4893.9208984375, 2446.96044921875, 1223.48022460937, 611.740112304687, 305.870056152344, 152.935028076172, 76.4675140380859, 38.233757019043, 19.1168785095215, 9.55843925476074, 4.77921962738037, 2.38960981369019, 1.19480490684509, 0.597402453422546]
|
||
resolutions: [156543.033928041, 78271.5169640203, 39135.7584820102,
|
||
19567.8792410051, 9783.93962050254, 4891.96981025127, 2445.98490512563,
|
||
1222.99245256282, 611.496226281409, 305.748113140704, 152.874056570352,
|
||
76.4370282851761, 38.218514142588, 19.109257071294, 9.55462853564701,
|
||
4.77731426782351, 2.38865713391175, 1.19432856695588, 0.597164283477938]
|
||
|
||
}, options);
|
||
SuperMap.CanvasLayer.prototype.initialize.apply(me, [me.name, me.url, null, options]);
|
||
me.units = "meter";
|
||
},
|
||
|
||
/**
|
||
* APIMethod: destroy
|
||
* 解构CloudLayer类，释放资源。
|
||
*/
|
||
destroy: function () {
|
||
var me = this;
|
||
SuperMap.CanvasLayer.prototype.destroy.apply(me, arguments);
|
||
me.mapName = null;
|
||
me.name = null;
|
||
me.url = null;
|
||
},
|
||
|
||
/**
|
||
* APIMethod: clone
|
||
* 创建当前图层的副本。
|
||
*
|
||
* Parameters:
|
||
* obj - {Object}
|
||
*
|
||
* Returns:
|
||
* {<SuperMap.Layer.CloudLayer>}新的图层。
|
||
*/
|
||
clone: function (obj) {
|
||
var me = this;
|
||
if (obj == null) {
|
||
obj = new SuperMap.Layer.CloudLayer(
|
||
me.name, me.url, me.layerName, me.getOptions());
|
||
}
|
||
|
||
obj = SuperMap.CanvasLayer.prototype.clone.apply(me, [obj]);
|
||
|
||
return obj;
|
||
},
|
||
|
||
/**
|
||
* Method: getTileUrl
|
||
* 获取瓦片的URL。
|
||
*
|
||
* Parameters:
|
||
* xyz - {Object} 一组键值对，表示瓦片X, Y, Z方向上的索引。
|
||
*
|
||
* Returns
|
||
* {String} 瓦片的 URL。
|
||
*/
|
||
getTileUrl: function (xyz) {
|
||
var me = this,
|
||
url = me.url;
|
||
return SuperMap.String.format(url, {
|
||
layerType: me.layerType,
|
||
x: xyz.x,
|
||
y: xyz.y,
|
||
scale: me.scales[xyz.z]
|
||
});
|
||
},
|
||
|
||
CLASS_NAME: "SuperMap.Layer.CloudLayer"
|
||
});
|