cesium 图层构建的那些事 （十八）
我门封装倾斜摄影图层
首先看定义
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export interface PTile3dLayer{
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}
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export interface PMaxtrix {
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position?:{
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x:number, //模型中心X轴坐标（经度，单位：十进制度）
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y:number, //模型中心Y轴坐标（纬度，单位：十进制度）
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z:number//模型中心Z轴坐标（高程，单位：米）
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},
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rotate?:{
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x:number,//X轴（经度）方向旋转角度（单位：度）
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y:number,//Y轴（纬度）方向旋转角度（单位：度）
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z:number//Z轴（高程）方向旋转角度（单位：度）
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},
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scale? :{
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x:number,//X轴
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y:number,//Y轴
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z:number//Z轴
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}
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}
主类
```javascript
import { Layer } from "../Layer";
import { PMaxtrix } from "./PTile3dLayer";
export class Tile3dLayer extends Layer {
private _tileVisibleCallback: any = null;
private _customShader: any = null;
constructor(option: any) {
super(option.name);
new Cesium.Cesium3DTileset(option).readyPromise.then((tileset: any) => {
this.cesiumObj = tileset;
this.callLoadEndCesiumObj();
});
}
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protected _addToMap(map: any) {
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map.scene.primitives.add(this.cesiumObj);
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}
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public autoToGround() {
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}
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protected _removeByMap(destroy: boolean = true) {
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if (this.cesiumObj) {
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this.map.scene.primitives.remove(this.cesiumObj);
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this.cesiumObj = null;
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}
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}
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private _bindVisibleEvent() {
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this._tileVisibleCallback && this._tileVisibleCallback()
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this._tileVisibleCallback = this.cesiumObj.tileVisible.addEventListener(
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this._updateTile,
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this
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)
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}
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private _updateTile(tile: any) {
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let content = tile.content
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for (let i = 0; i < content.featuresLength; i++) {
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let feature = content.getFeature(i)
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let model = feature.content._model
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if (this._customShader && model && model._sourcePrograms && model._rendererResources) {
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Object.keys(model._sourcePrograms).forEach(key => {
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let program = model._sourcePrograms[key]
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model._rendererResources.sourceShaders[program.fragmentShader] = this._customShader
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})
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model._shouldRegenerateShaders = true
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}
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}
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}
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setPosition(x: number, y: number, z: number) {
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const position = Cesium.Cartesian3.fromDegrees(x, y, z);
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const modelMatrix = Cesium.Transforms.eastNorthUpToFixedFrame(position);
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this.cesiumObj._root.transform = modelMatrix;
更多参考 https://xiaozhuanlan.com/topic/8329645170
