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| <template>
<div class="main">
<div id="cesiumContainer"></div>
<div class="btn">
<van-button :type="type == 1 ? 'primary' : 'default'" @click="changeType(1, $event)" style="float: left">按钮1</van-button>
<van-button :type="type == 2 ? 'primary' : 'default'" @click="changeType(2, $event)" style="float: right">按钮2</van-button>
</div>
</div>
</template>
<script>
let viewer = null
let nodesPosition = null
let labels = null
let nodesInstances = []
let GInstances = []
let LoadInstances = []
let linesInstances = []
let websocketMap = null
import { Button } from 'vant';
export default {
name: "",
data () {
return {
type: 1
}
},
methods:{
initCesium(){
Cesium.Camera.DEFAULT_VIEW_RECTANGLE = Cesium.Rectangle.fromDegrees(
75.0, // 东
0.0, // 南
140.0, // 西
60.0 // 北
)
viewer = new Cesium.Viewer("cesiumContainer",
{
animation: false,
timeline: false,
fullscreenButton: false,
geocoder: false,
baseLayerPicker: false,
homeButton: false,
sceneModePicker: false,
navigationHelpButton: false,
selectionIndicator: false,
shouldAnimate : true,
infoBox: false,
// imageryProvider: imageryProvider,
baseLayerPicker: false,
orderIndependentTranslucency: false,
contextOptions: {
webgl: {
alpha: true,
}
},
sceneMode: 2
}
)
viewer._cesiumWidget._creditContainer.style.display = "none" // 去除版权信息
viewer.imageryLayers.get(0).show = false;//不显示底图
viewer.scene.globe.baseColor = Cesium.Color.fromCssColorString("rgba(65, 175, 227, 1)")
viewer.scene.globe.depthTestAgainstTerrain = false
viewer.camera.setView({
// Cesium的坐标是以地心为原点，一向指向南美洲，一向指向亚洲，一向指向北极州
// fromDegrees()方法，将经纬度和高程转换为世界坐标
destination:Cesium.Cartesian3.fromDegrees(92.64, 33.93, 3000000.0),
orientation:{
// 指向
heading:Cesium.Math.toRadians(180,0),
// 视角
pitch:Cesium.Math.toRadians(-90),
roll:0.0
}
})
},
getPosition(){
this.axios.get(`http://xxx.xxx.xxx.xxx:xxxx/getMap.json`, {
}).then((res) => {
console.log(res)
nodesPosition = res.data
this.createNodes()
this.createLines()
this.addPrimitives()
}).catch((err) => {
console.log(err)
})
},
createNodes(){
nodesPosition.bus.forEach( point => {
nodesInstances.push( new Cesium.GeometryInstance( {
geometry : new Cesium.CircleGeometry( {
center : Cesium.Cartesian3.fromDegrees( point.lng, point.lat, 1000 ),
radius : 30000.0,
vertexFormat : Cesium.PerInstanceColorAppearance.VERTEX_FORMAT
}),
id: point.name,
attributes : {
color : Cesium.ColorGeometryInstanceAttribute.fromColor( Cesium.Color.fromHsl(0.58, 1, 0.5, 0.5))
},
}))
labels.add({
position: new Cesium.Cartesian3.fromDegrees(point.lng, point.lat, 200000),
text: point.name.slice(3),
font: '20px Helvetica',
horizontalOrigin : Cesium.HorizontalOrigin.CENTER,
verticalOrigin : Cesium.VerticalOrigin.CENTER,
})
})
nodesPosition.gen.forEach( point => {
GInstances.push( new Cesium.GeometryInstance( {
geometry : new Cesium.CircleGeometry( {
center : Cesium.Cartesian3.fromDegrees( point.lng, point.lat ),
radius : 20000.0,
}),
}))
})
nodesPosition.load.forEach( point => {
LoadInstances.push( new Cesium.GeometryInstance( {
geometry : new Cesium.CircleGeometry( {
center : Cesium.Cartesian3.fromDegrees( point.lng, point.lat ),
radius : 20000.0,
})
}))
})
},
createLines(){
let lines = nodesPosition.busLine.concat(nodesPosition.GenLine.concat(nodesPosition.LoadLine))
lines.forEach( (line) => {
linesInstances.push( new Cesium.GeometryInstance( {
geometry : new Cesium.PolylineGeometry({
positions : Cesium.Cartesian3.fromDegreesArray([
line.Flng, line.Flat,
line.Tlng, line.Tlat
]),
width: 1
}),
id: line.Line_name,
attributes : {
color : Cesium.ColorGeometryInstanceAttribute.fromColor( Cesium.Color.WHITE)
},
}))
})
},
addPrimitives(){
viewer.scene.primitives.add( new Cesium.Primitive( {
geometryInstances : nodesInstances, //合并
//某些外观允许每个几何图形实例分别指定某个属性，例如：
appearance : new Cesium.PerInstanceColorAppearance()
}))
viewer.scene.primitives.add( new Cesium.Primitive( {
geometryInstances : linesInstances,
appearance : new Cesium.PolylineColorAppearance({
translucent: false, //是否透明
})
}))
viewer.scene.primitives.add( new Cesium.Primitive( {
geometryInstances : GInstances,
appearance :new Cesium.MaterialAppearance({
material: new Cesium.Material({
fabric: {
type: "Image",
uniforms: {
image: require('@/assets/images/G.png')
}
}
}),
materialSupport : Cesium.MaterialAppearance.MaterialSupport.TEXTURED
})
}))
viewer.scene.primitives.add( new Cesium.Primitive( {
geometryInstances : LoadInstances,
appearance :new Cesium.MaterialAppearance({
material: new Cesium.Material({
fabric: {
type: "Image",
uniforms: {
image: require('@/assets/images/load.png')
}
}
}),
materialSupport : Cesium.MaterialAppearance.MaterialSupport.TEXTURED
})
}))
},
updateNodes(){
let p = viewer.scene.primitives.get(1)
console.log(p)
// 连接 websocket
websocketMap = new WebSocket('ws://xxx.xxx.xxx.xx:xxxx/Transient')
websocketMap.onopen = function (event){
console.log("websocketMap建立链接")
websocketMap.send('1')
}
websocketMap.onmessage = function(event){
let data = JSON.parse(event.data)
// console.log(data)
for(let i = 0;i < data.bus.length; i++){
let attributes = p.getGeometryInstanceAttributes(`bus${data.bus[i].id}`)
attributes.color = Cesium.ColorGeometryInstanceAttribute.toValue(Cesium.Color.fromHsl(data.bus[i].value*0.25, 1, 0.5, 0.8))
}
}
},
changeType(type, event){
console.log('发送数据', type, event.target)
let b = event.target
this.type = type
websocketMap.send(type)
}
},
created(){
},
mounted() {
this.initCesium()
labels = viewer.scene.primitives.add(new Cesium.LabelCollection())
this.getPosition()
setTimeout(() => {
this.updateNodes()
}, 1000)
}
}
</script>
<style scoped>
.main{
width: 100%;
height: 100%;
}
#cesiumContainer{
width: 100%;
height: 100%;
}
.btn{
width: 400px;
height: 80px;
position: absolute;
top: 100px;
left: 50%;
margin-left: -200px
}
</style>
|
