I load several models in my scene. I would like to:
Fit to view from dbId -> this can be done with viewer.fitToView(objectIds,model)
Select an element from dbid on a particular model. But viewer.select(dbids,selectionType) does not offer possibility to select the model.
How can we make a selection on a dbid, on specific model, when several models are loaded?
Thanks
Looking at the code of Forge Viewer v6, the select method is defined as
Viewer3D.prototype.select = function (dbids, model) { ... }
So the second parameter should actually be the model, not a selection type.
Related
We use custom objects to visualize ifc space data (mostly rooms). As a guidance, we used this very helpful blog. After drawing the objects, we would also like to select the custom objects from outside and isolate them in the viewer. As the tutorial suggests, we change the model builder's changeFragmentsDbId function to set DbIds that do not exist yet and therefor do not overlap with already existing DbIds. One approach is to use the negative space [-1, -2, -3...] for our custom objects DbIds like this:
const roomFragId = this.modelBuilder.addFragment(roomGeometryId, materialName, transform);
this.modelBuilder.changeFragmentsDbId(roomFragId, -roomFragId);
Another one is to find the maximum DbId (eg. 4905) and use numbers higher than this maximum DbId for our custom objects DbIds (eg. [4906, 4907, 4908...]):
const roomFragId = this.modelBuilder.addFragment(roomGeometryId, materialName, transform);
this.modelBuilder.changeFragmentsDbId(roomFragId, maxDbId + roomFragId);
However, when we try to isolate a custom drawn object (viewer.isolate(-1) or viewer.isolate(4906)), the viewer kind of refreshs itself, but no object gets isolated...
Thus, we would like to know how we can isolate custom objects?
The other way, when we select the object in the viewer works for the negative space approach => we get the DbId (eg. -1) in the aggregate selection event.
Thank you for any kind of help!
To isolate or select custom objects created by the SceneBuilder ext, you need to pass model object to Viewer3D#isolate / Viewer3D#select like the below. Otherwise, viewer will use viewer.model instead.
viewer.isolate( [4906, 4907, 4908...], this.modelBuilder.model )
viewer.select( [4906, 4907, 4908...], this.modelBuilder.model )
I have couple of questions about combine model on forge viewer (load list urn to 1 viewer):
when i combine model. i only can get data from 1 main model in that combine. for instance,
var instanceTree = GlobalViewer.model.getData().instanceTree;
var allDbIdsStr = Object.keys(instanceTree.nodeAccess.dbIdToIndex);
var list = allDbIdsStr.map(function (id) { return parseInt(id) });
list will return all dbid of main model, how can i access all data of all model when i combine?
what is the unique id for object in combine model. i do some function with dbid and i realize it can appear in others model too.
When i combine 3d model(revit) with 2d model(autocad). it has 2 case: if 3d model load first i can rotate like normal, if 2d model load first i cant rotate the model any more. how can i force it always can rotate?
Autocad unit seems different with model in viewer. it always scale down compare with the model. how can i fix that?
Appreciate any comments,
Regarding #1: viewer.model obviously only references one of the models (I believe it's the last one you loaded), but you can use viewer.getVisibleModels() or viewer.getHiddenModels() to get other loaded models as well.
Regarding #2: dbIDs are only unique within a single model; many of the viewer methods accept an additional parameter specifying the model on which to operate, for example, you could say viewer.select([123, 456], oneOfMyModels).
Regarding #3: that's a good question; loading a 2D model first puts the viewer into 2D viewing mode (where only zoom and pan is allowed); if you know you will be working with 3D models, I'd recommend always loading those first
Regarding #4: yes, each loaded model can have different units; when loading a model using the loadDocumentNode method you can specify additional options (for example, a placement transform for the loaded geometries), and one of them is an object called applyScaling, for example, like so:
viewer.loadDocumentNode(doc, viewable, {
applyScaling: { to: 'mm' }
});
I'm loading multiple IFC's with their SVF derivatives into the Forge viewer. This works fine, but I cannot seem to get the Viewer3D's getIsolatedNodes or getHiddenNodesto work.
I'm using the GuiViewer3D class like this:
// initializing:
const viewer = new Autodesk.Viewing.Private.GuiViewer3D(viewerDiv);
...
// load model1
viewer.start(model1Url ....
...
// load model2
viewer.loadModel(model2Url, ...
...
// after having loaded the models:
console.log(viewer.getIsolatedNodes());
The last line here only prints node ids if model1 has isolated nodes. If isolating nodes from model2, the last line prints an empty array. Is there a way to make this work with multiple models?
You can get access to the viewer's visibility manager via viewer.impl.visibilityManager, and call its methods for a specific model ID, for example:
viewer.impl.visibilityManager.getIsolatedNodes(modelID);
viewer.impl.visibilityManager.getHiddenNodes(modelID);
viewer.impl.visibilityManager.getAggregateHiddenNodes(); // across all models
I have two pairs of controller and view. The first view contains a list of items, while the in second shows some details of a specific item. What I want to achieve is that a click on one list item, the function onSelect should call second controller of detail view and update its content with the selected list item.
So far I have following code:
//first list controller
onSelect : function () {
var secondController = sap.ui.controller("controller.Detail");
secondController.updateFunction("some text");
}
Then in second controller:
//second detail-controller
updateFunction: function (someText) {
var view = sap.ui.xmlview("view.Detail");
view.byId("someTextField").setText(someText);
}
The problem is that this is not working. It seems that sap.ui.xmlview is not returning the same view which is displayed.
When I execute following code:
var model = view.getModel(model);
console.log(model);
within 2 functions of detail controller, but first is called by outside controller and second is called by onInit or function called by detail view event, the id is different.
How can I achieve such a cross-controller function calling with updating content of different view? Or is my approach not proper?
I would recommend to use either the EventBus or Routing for inter view communication.
Routing is nice as it uses the hash part (#) of the url to communicate for example an event like the selection of an item (f.e. https://example.com/myUi5App/index.html#/item/123). The user can use the browser history and bookmarks to navigate through your app.
A view can register to the router to be notified when a specific url pattern is matched. The walkthrough in the SAPUI5 Developer Guide does nicely explain routing step by step and in detail here and here.
EventBus is a global object that can publish arbitrary events. Anyone interested can register to the EventBus. There is an EventBus on the Component which you should use if you have a component and a global EventBus.
Both techniques help decoupling your views. It does not matter if there are one, many or none views listening to the selection change. And it does not matter for the listeners who fired the event.
If both views have been called once you can achieve this via the view (from my opionion, this is quite hacky and should be solved otherway)
this.getView().byId("yourViewId").oController.yourMethod();
means in your case
onSelect : function () {
var secondController = this.getView().byId("view_id").oController;
secondController.updateFunction("some text");
}
maybe this helps you, he is passing the controller reference which would be a better option: Calling Controller Function from inside a press handler in sapui5
I have found solution.
sap.ui.getCore().byId("__xmlview1");
According to documentation var view = sap.ui.xmlview("view.Detail"); always creates a new view.
However I am still struggling about specifying id of xmlview. Since "___xmlview1" is dynamicly given name and the number 1 means serial number of views within application. So if I create another view before creation of "view.Detail", the id will point to the new one.
I am creating xmlview like this:
<mvc:XMLView viewName="view.Detail"></mvc:XMLView>
I'm currently trying to find a "definitive" solution (meaning : finding a solution that seems efficient a complying with OOP precepts) to a recurring problem I've been experiencing for some time : the problem of shared data in different parts of my code.
Take note that I'm not using any MVC framework anywhere here. I'm just refering to my data class as a Model and to the display class as a View (because its the proper names and have nothing to do with the MVC pattern, people made views & models way before the MVC pattern was "created").
Here's my problem :
Whenever I make an application that uses some quite expanded data (for example a game), I try to separate logic (movements, collisions, etc...) and display in two classes. But then, I stumble upon the problem : how to "bind" the data stored in my logic class with the corresponding display objects in my view class, without duplicating data, references, or other things between the different classes ?
Lets take a basic example :
I have a MyLogicClass, holding a Vector of "EntityData" objects (each with position, sizes, various states, everything to handle the logic of my items)
And I have a MyViewClass, creating and displaying Sprites for each EntityData that are in the MyLogicClass, and make them move after them being updated in the game loop.
The first thing that would come to my mind would be to store inside each data element its corresponding view, thus allowing me to loop throught my Vector to update the items logic then update the views accordingly. But that forces me to hold a MyLogicClass reference inside the MyViewClass, to be sure that I can target the entities data, forcing me to couple the two classes (things that I would prefer not to do).
On the other hand, there's the solution of each Entity having an ID, both in my data model (MyLogicClass's EntityData objects having an ID parameter) and in my View class (Sprites holding a reference to its original entity data ID). But when I want to target a specific entity that forces me to loop for it in my data model, then loop for it again to find the related Sprite in my View. This solution allows me to have loose coupling between my data and my view, but looping through hundreds of elements twice every frame (can happen !) really sounds not performance optimized for me.
I may be giving the whole problem a lot more importance that it should deserve, but I've been stumbling upon that more than one time, and I'd love to have some other views than mine about that.
Do you guys have any advice / solution for such an issue ?
Are there some other data formats / hierarchy that I may not be aware of for such case ?
What I've done is 'link' them together using events and event listeners. I have my "model parts" throw specific events that the "display parts" catch and render/update.
I've found this does let me structure some of my tests by writing testing code that would listener for certain events and error checks it that way. My code is still separated and testable on it's own: I can test my "model" by triggering and making sure the right events with the right values are being thrown. Like-wise, I can write some testing code to throw preset events that can be caught by the "display" to see if it has any issues.
Then once it is all working, I just reuse those same event listeners and link to 'each other'.
Later my "controller" (user input) would manipulate the "model" parts, which would cause events to be thrown to the "display" thus be rendered/updated.
I don't know if this is "correct" or not in terms of following the mvc pattern nor do I really have any formal knowledge on these sorts of things. I'd be interested in someone else's more knowledgeable opinion as well.
I think maybe you have over thought the problem. I do this sometimes.
Your view class has to have some type of link to the model obviously and an event is a great way to do it. Something bare bones here to give you an idea.
// Model class
package
{
class MyModel extends EventDispatcher
{
// you can make them public but that would
// be against some oop practices. so private it is
private var m_position:Vector2D;
MyModel(){}
// one way of doing getters/getters
// example: theModel.SetPosition(something);
public function GetPosition():Vector2D { return m_position; }
public function SetPosition(value:Vector2D):void
{
m_position = value;
ModelChanged();
}
// the other way
// sample: theModel.position = something;
public function get position():Vector2D {return m_position; }
public function set position(value:Vector2D):void
{
m_position = value;
ModelChanged();
}
private function ModelChanged():void
{
dispatchEvent(new Event(Event.CHANGE));
}
}
}
// now for our view.
package
{
class MyView extends Sprite // or whatever
{
private var model:MyModel;
MyView(model:MyModel)
{
this.model = model;
model.addEventListener(Event.CHANGE, handleModelChanged);
// fire off an event to set the initial position.
handleModelChanged(NULL);
}
private function handleModelChanged(evt:Event):void
{
x = model.position.x;
y = model.position.y;
// etc etc etc.
}
}
}
Anyhow you don't need the setters if your going to have the logic in the model file also obviously if nothing outside of the model needs to change it no reason for setters. But you do need the getters.
This decouples the model from the view and you can write any view any way you want and all you have to provide is a handler for when the model has changed. Just expose whatever data your views will need with getters.
You now only have to loop through the models and if one changes it will fire off an event and the views that are listening in will update.
hope I didn't miss anything and that explains what you were wanting.
Edit: I forgot to add, you don't have to have "ModelChanged()" all over the place if your using something like an update function. Just update and when your finished fire off the event.