我设法将多个模型加载到同一查看器中,现在我正在尝试提取每个模型元素的属性和值;但是,当我使用getPropertyDb()
和executeUserFunction()
时,我只能恢复初始模型的属性。
我从此存储库中的代码开始,并使用本文了解如何加载多个模型。
第一个模型是从服务器重定向后加载的。
function onDocumentLoadSuccess(doc) {
const geometries = doc.getRoot().search({ type: 'geometry' });
if (geometries.length === 0) {
console.error('Document contains no viewables.');
return;
}
const initViewable = geometries[0];
const svfUrl = doc.getViewablePath(initViewable);
const mat = new THREE.Matrix4();
const modelOptions = {
placementTransform: mat,
globalOffset: { x: 0, y: 0, z: 0 },
sharedPropertyDbPath: doc.getPropertyDbPath()
};
const viewerDiv = document.getElementById('MyViewerDiv');
const config = {
extensions: myExtensions
};
viewer = new Autodesk.Viewing.Private.GuiViewer3D(viewerDiv, config);
viewer.start(svfUrl, modelOptions, onLoadModelSuccess, onLoadModelError);
}
加载了每个模型的几何形状后,扩展程序会做一些事情。
function MyExtension(viewer, options) {
Autodesk.Viewing.Extension.call(this, viewer, options);
}
MyExtension.prototype = Object.create(Autodesk.Viewing.Extension.prototype);
MyExtension.prototype.constructor = MyExtension;
MyExtension.prototype.onGeometryLoadEvent = function(event) {
const myPromise = this.viewer.model
.getPropertyDb()
.executeUserFunction(userFunction);
myPromise
.then(function(retValue) {
if (!retValue) {
console.log('Model doesn't contain valid elemens.');
}
// do stuff...
})
.catch(err => console.log(err));
};
MyExtension.prototype.load = function() {
this.onGeometryLoadBinded = this.onGeometryLoadEvent.bind(this);
this.viewer.addEventListener(
Autodesk.Viewing.GEOMETRY_LOADED_EVENT,
this.onGeometryLoadBinded
);
return true;
};
MyExtension.prototype.unload = function() {
this.viewer.removeEventListener(
Autodesk.Viewing.GEOMETRY_LOADED_EVENT,
this.onGeometryLoadBinded
);
this.onGeometryLoadBinded = null;
return true;
};
Autodesk.Viewing.theExtensionManager.registerExtension(
'MyExtension',
MyExtension
);
function userFunction(pdb) {
// get properties of the elements
}
新型号也使用扩展名加载在同一查看器中。
MyOtherExtension.prototype.onDocumentLoadSuccess = function(doc) {
// get the svfUrl of the initial geometry and set the loading options
this.viewer.loadModel(
svfUrl,
loaderOptions,
this.onLoadModelSuccessBinded,
this.onLoadModelErrorBinded
);
};
如何更新属性数据库,以获取当前加载到查看器的所有模型的属性和值?
尝试通过模型对象访问特定数据库:
viewer.impl.modelQueue().getModels()[index].getPropertyDb()