//操作 倾斜影像数据的js 类库
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function remove3dtileByPath(path) {
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if (base3dtilesPrimitives != []) {
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for (var i = 0; i < base3dtilesPrimitives.length; i++) {
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path2 = serverIP + path;
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if (base3dtilesPrimitives[i]._url == path2) {
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viewer.scene.primitives.remove(base3dtilesPrimitives[i]);
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//从数组中移除当前路径
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base3dtilesPrimitives.splice(i, 1);
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}
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}
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}
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}
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//卸载所有的3dtiles实景三维数据底图
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function remove3dtilesmap() {
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if (base3dtilesPrimitives != []) {
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for (var i = 0; i < base3dtilesPrimitives.length; i++) {
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viewer.scene.primitives.remove(base3dtilesPrimitives[i]);
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}
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base3dtilesPrimitives = [];
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}
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}
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//判断是否存在
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function is3dtileExsit(id,path) {
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if (base3dtilesPrimitives != []) {
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for (var i = 0; i < base3dtilesPrimitives.length; i++) {
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if (base3dtilesPrimitives[i]._id == id && base3dtilesPrimitives[i]._url == path) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* 添加 3dties
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* @returns options
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*/
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function add3dtiles(options) {
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var id = options.id;
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var path = options.url;
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if (is3dtileExsit(id,path)) {
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return;
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}
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var modelMatrix = Cesium.Matrix4.fromArray([
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1.0, 0.0, 0.0, 0.0,
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0.0, 1.0, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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0.0, 0.0, 0.0, 1.0
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]);
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//配置数据
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var tilesetOption = {
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id: options.id,
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url: options.url,
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maximumScreenSpaceError: 16,
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maximumNumberOfLoadedTiles: 2000,
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maximumMemoryUsage: 8192,
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skipLevels: 1,
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modelMatrix: modelMatrix//引入转移矩阵
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};
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var tileset = new Cesium.Cesium3DTileset(tilesetOption);
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tileset._id = options.id;
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tileset._tilesType = options.tilesType;
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tileset.loadJson = function (url) {
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var resource = Resource.createIfNeeded(tilesetUrl);
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return resource;
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}
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tileset.readyPromise.then(function () {
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var a = tileset.boundingSphere.center.clone();
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a.x += Number(options.x);
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a.y += Number(options.y);
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a.z += Number(options.z);
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var cartographic = Cesium.Cartographic.fromCartesian(a);
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var lng = Cesium.Math.toDegrees(cartographic.longitude);//经度值
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var lat = Cesium.Math.toDegrees(cartographic.latitude);//纬度值
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const cartographic2 = Cesium.Cartographic.fromCartesian(
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tileset.boundingSphere.center
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);
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const surface = Cesium.Cartesian3.fromRadians(
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cartographic2.longitude,
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cartographic2.latitude,
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0
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);
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const offset = Cesium.Cartesian3.fromRadians(
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cartographic.longitude,
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cartographic.latitude,
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options.z
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);
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const translation = Cesium.Cartesian3.subtract(
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offset,
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surface,
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new Cesium.Cartesian3()
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);
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var m = Cesium.Matrix4.fromTranslation(translation);
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tileset._root.transform[12] += m[12];
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tileset._root.transform[13] += m[13];
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tileset._root.transform[14] += m[14];
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})
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// console.log(tileset._root);
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//加载3dtiles数据
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base3dtilesPrimitives.push(viewer.scene.primitives.add(tileset));
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return tileset;
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}
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/**
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* 更新位置
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* @param {*} model
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* @param {*} options
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*/
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function update3dtilesMaxtrixByXYZ(model, options) {
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var mx = Cesium.Matrix4.fromArray([
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1.0, 0.0, 0.0, 0.0,
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0.0, 1.0, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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options.x, options.y, options.z, 1.0
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]);
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model._modelMatrix = mx;
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}
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//随机颜色
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function randomRgbaColor() { //随机生成RGBA颜色
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var r = Math.floor(Math.random() * 256); //随机生成256以内r值
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var g = Math.floor(Math.random() * 256); //随机生成256以内g值
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var b = Math.floor(Math.random() * 256); //随机生成256以内b值
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var alpha = Math.random(); //随机生成1以内a值
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return "rgba(" + r + "," + g + "," + b + "," + 1 + ")"; //返回rgba(r,g,b,a)格式颜色
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}
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function update(url, lng, lat, height, head, pitch, roll, scaleparam) {
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var modelMatrix = Cesium.Matrix4.fromArray([
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1.0, 0.0, 0.0, 0.0,
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0.0, 1.0, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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0.0, 0.0, 0.0, 1.0
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]);
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var tilesetOption = {
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url: url,
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maximumScreenSpaceError: 16,
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maximumNumberOfLoadedTiles: 2000,
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maximumMemoryUsage: 8192,
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skipLevels: 1,
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modelMatrix: modelMatrix//引入转移矩阵
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};
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var tileset = new Cesium.Cesium3DTileset(tilesetOption);
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let mx = Cesium.Matrix3.fromRotationX(Cesium.Math.toRadians(head));
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let my = Cesium.Matrix3.fromRotationY(Cesium.Math.toRadians(pitch));
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let mz = Cesium.Matrix3.fromRotationZ(Cesium.Math.toRadians(roll));
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let rotationX = Cesium.Matrix4.fromRotationTranslation(mx);
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let rotationY = Cesium.Matrix4.fromRotationTranslation(my);
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let rotationZ = Cesium.Matrix4.fromRotationTranslation(mz);
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//平移
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let position = Cesium.Cartesian3.fromDegrees(lng, lat, height);
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let m = Cesium.Transforms.eastNorthUpToFixedFrame(position);
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let scale = Cesium.Matrix4.fromUniformScale(scaleparam);
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// //缩放
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Cesium.Matrix4.multiply(m, scale, m);
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//旋转、平移矩阵相乘
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Cesium.Matrix4.multiply(m, rotationX, m);
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Cesium.Matrix4.multiply(m, rotationY, m);
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Cesium.Matrix4.multiply(m, rotationZ, m);
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tileset.readyPromise.then(function () {
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}).then(function () {
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if (tileset._root.transform == undefined) {
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console.log("瓦片未变换");
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}
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tileset._root.transform = m;
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});
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base3dtilesPrimitives.push(viewer.scene.primitives.add(tileset));
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}
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