水面
水面的保存和压平相同，都是使用 togeojson()的方式直接转换为 json 格式数据上传保存,水面需要额外调用水面接口，需要引用插件 Water.js
HTML
<script type="text/javascript" src="Build/Plugins/Water/Water.js"></script>水面绘制
JavaScript
var waterDataSource;
//存储水面的面要素会保存到该对象中
var promise = viewer.dataSources.add(new LSGlobe.GeoJsonDataSource("waterDataSource"));
promise.then(function(dataSource) {
waterDataSource = dataSource;
}).otherwise(function(error) {
});
//水面的绘制
var waterHandler = new LSGlobe.ScreenSpaceEventHandler(viewer.scene.canvas);
waterHandler.setInputAction(function(movement) {
//获取的坐标上添加标绘点，具体的坐标获取参照坐标转换
var Pos = scene.pickGlobe(movement.position);
},LSGlobe.ScreenSpaceEventType.LEFT_CLICK);
//根据上面获取到的点集合经过处理后达到新的数据
var oValuePoint = ChangePolygonPosition(event.positions);//同压平的坐标处理方法
var pos = oValuePoint;//同上面oValuePoint
//创建
var wateritem = new LSGlobe.Water(viewer.scene);
wateritem.name = "水面";//水面名称
wateritem.id = id;//水面的id
wateritem.waveWidth = 5;//波纹宽度
wateritem.flowDirection = 90;//水流方向
wateritem.flowSpeed =10;//水流速度
wateritem._waterColor = LSGlobe.Color.fromCssColorString("#FFFF00");//水面颜色
wateritem.des = "";//水面描述
wateritem.alpha = 100;//
wateritem.waterPolygon = new LSGlobe.PolygonGeometry({
polygonHierarchy: new LSGlobe.PolygonHierarchy(LSGlobe.Cartesian3.fromDegreesArrayHeights(oValuePoint)),
perPositionHeight: true
});
//属性
var oWaterEntityProp = {};
oWaterEntityProp.waveWidth = wateritem.waveWidth;
oWaterEntityProp.flowDirection = wateritem.flowDirection;
oWaterEntityProp.flowSpeed = wateritem.flowSpeed;
oWaterEntityProp._waterColor = "#006ab4";
oWaterEntityProp.alpha = 100;
oWaterEntityProp.des = wateritem.des;
oWaterEntityProp.name = wateritem.name;
//该面是辅助设置水面的面,最后水面的高度和范围是该面显示的高度和范围（该面用于保存,存储于waterDataSource.entities）
var waterEntity = waterDataSource.entities.add({
name: '水面',//水面名称
id: id,
polygon: {
hierarchy: {
positions:LSGlobe.Cartesian3.fromDegreesArrayHeights(oValuePoint)
},
material: new LSGlobe.Color(0.5, 1.0, 1.0, 0.01),
fill: true,
//显示填充
outline: false,
outlineColor: LSGlobe.Color.YELLOW,
perPositionHeight: true
}
});
waterEntity.properties = oWaterEntityProp;
viewer.scene.waterCollection._water.push(wateritem);水面编辑
JavaScript
//获取水面对象
function fnGetOwaterById(id) {
var oSingleWater;
var aWater = scene.waterCollection._water;
for (var i = 0; i < aWater.length; i++) {
if (id == aWater[i].id) {
aWater[i].index = i;
oSingleWater = aWater[i];
break;
}
}
return oSingleWater;
}
//笛卡尔积转经纬度
function fnCartesian2Degreen(oCartesian){
var ellipsoid=viewer.scene.globe.ellipsoid;
var cartesian3=new LSGlobe.Cartesian3(oCartesian.x,oCartesian.y,oCartesian.z);
var cartograhphic=ellipsoid.cartesianToCartographic(cartesian3);
var lat=LSGlobe.Math.toDegrees(cartograhphic.latitude);
var lng=LSGlobe.Math.toDegrees(cartograhphic.longitude);
var alt=cartograhphic.height;
return {lng:lng,lat:lat,alt:alt}
}
//经纬度转笛卡尔积坐标
function fnDegreen2Cartesian(oDegreen) {
return LSGlobe.Cartesian3.fromDegrees(oDegreen.lng?oDegreen.lng:oDegreen.x, oDegreen.lat?oDegreen.lat:oDegreen.y, oDegreen.alt?oDegreen.alt:oDegreen.z, viewer.scene.globe.ellipsoid);
}
var oWater = fnGetOwaterById(id);//水面对象
var oWaterEntity = waterDataSource.entities.getById(id);//水面数据存储对象
//水面名称修改
oWater.name = "水面新名称";
oWaterEntity.name = = "水面新名称";
//水面描述修改
oWater.des = "水面新描述";
oWaterEntity.properties.addProperty("des", "水面新描述");
//水面位置修改
var originWaterCenter = fnCartesian2Degreen(oWater._waterCenterPos);//原水面的中心的经纬度坐标
oWater._waterCenterPos=SGlobe.Cartesian3.fromDegrees(120, 30, 10, viewer.scene.globe.ellipsoid);//新的水面中心坐标
//计算出originWaterCenter和新中心坐标(120,30,10)的经纬度高度差值
var fDiffLng=120-originWaterCenter.lng;
var fDiffLat=30-originWaterCenter.lat;
var fDiffAlt=10-originWaterCenter.alt;
//获取原水面所有点坐标
var aWaterPointArray = ChangePolygonPosition(oWaterEntity.polygon.hierarchy.getValue().positions);
//经度差值不为0
for (var i = 0; i < aWaterPointArray.length; i = i + 3) {
aWaterPointArray[i] += fDiffLng; //height 改变后的高度值
}
//纬度差值不为0
for (var i = 1; i < aWaterPointArray.length; i = i + 3) {
aWaterPointArray[i] += fDiffLat; //height 改变后的高度值
}
//高度差值不为0
for (var i = 2; i < aWaterPointArray.length; i = i + 3) {
aWaterPointArray[i] += fDiffAlt; //height 改变后的高度值
}
//重新存储坐标点
oWaterEntity.polygon.hierarchy = {positions:LSGlobe.Cartesian3.fromDegreesArrayHeights(aWaterPointArray)};
//波纹宽度
oWater.waveWidth = 5;
oWaterEntity.properties.addProperty("waveWidth", 5);
//水流速度
oWater.flowSpeed = 5;
oWaterEntity.properties.addProperty("flowSpeed", 5);
//水立方向
oWater.flowDirection = 90;
oWaterEntity.properties.addProperty("flowDirection", 90);
//水面的颜色
oWater._waterColor = LSGlobe.Color.fromCssColorString("#FF0000").withAlpha(1);
oWaterEntity.properties.addProperty("_waterColor", "#FF0000");水面显示隐藏
JavaScript
oWater.isVisible = true;//true:显示，false：隐藏水面飞行
JavaScript
var entity = waterDataSource.entities.getById(waterid);
var entityPosition = getRealPosition(entity);//同单体化
viewer.camera.flyTo({
destination: LSGlobe.Cartesian3.fromDegrees(entityPosition.lng, entityPosition.lat, entityPosition.alt),
duration: 3
})水面删除
JavaScript
waterDataSource.entities.removeById(id);
var oWater = fnGetOwaterById(treeNode.id);
if (oWater) oWater.destroy();水面存储
水面存储是以 json 格式保存的,直接赋值给 oSubSceneData.water,然后随场景保存接口一并提交保存
JavaScript
oSubSceneData.water = waterDataSource.toGeoJson()水面重载
水面获取接口，参数 jsonType 为 5
//localhost:8000/wish3dearth/api/scene/v1.0.0/getSceneJsonInfo
JavaScript
var oGeoJson = result.data;
//result.data前面获取的水面数据json
var promise = LSGlobe.GeoJsonDataSource.load(oGeoJson, {});
promise.then(function(dataSource) {
//将数据再次加载到初始化存储水面的对象中
waterDataSource = dataSource;
//添加到球中
viewer.dataSources.add(dataSource);
var entities = waterDataSource.entities._entities._array;
for (var i = 0; i < entities.length; i++) {
var entity = entities[i];
var WaterId = entity.id;
var WaterName = entity.name;
if (entity.polygon) {
entity.polygon.outline = false;
var wateritem = new LSGlobe.Water(viewer.scene);
wateritem.waterPolygon = new LSGlobe.PolygonGeometry({
polygonHierarchy: new LSGlobe.PolygonHierarchy(entity.polygon.hierarchy._value.positions),
perPositionHeight: true
});
var oProperties = entity.properties.getValue();
wateritem.id = WaterId;
wateritem.waveWidth = oProperties.waveWidth;
wateritem.flowDirection = oProperties.flowDirection;
wateritem.flowSpeed = oProperties.flowSpeed;
wateritem._waterColor = LSGlobe.Color.fromCssColorString(oProperties._waterColor).withAlpha(oProperties.alpha / 100);
wateritem.name = WaterName;
wateritem.des = oProperties.des;
wateritem.alpha = oProperties.alpha;
wateritem.isVisible = entity.show;
viewer.scene.waterCollection._water.push(wateritem);
}
}
}).otherwise(function(error) {
console.log(error);
});