I would like to build a CNC manufacturability analysis app using Autodesk Forge.
Setting the computational geometry algorithms aside, what kind of geometrical data can I extract from CAD files using this platform? also, is there an existing app I am unaware of?
Thanks
Depending on the input file format you can convert to different other formats:
Supported Translations
Though it's not obvious from the above list, all input formats support conversion to OBJ format, which can also be done at subcomponent level - so you don't have to export the whole model to OBJ.
Here is a sample that lets you access your files from A360 and convert them into whatever format is currently supported for them:
Model Derivative API sample
Source code: https://github.com/Autodesk-Forge/model.derivative-nodejs-sample
Related
I have implemented multiple models viewer using Autodesk forge. We are trying to achieve a functionality where users could select entities from different models from multi-model viewer and export a single obj file out of it.
but it seems, Translate a Source File API allows just a single model URN to be passed.
I'm looking for a way where I could create a single Obj from more than one model URN.
I think there is not built-in way to do that actually.
If you are working with NodeJS you can use glTF file format and follow this method :
Convert your different models with Forge-Convert-Utils
Merge with glTF-Transform following this answer : Multiple gltf loading and merging on server side
glTF is well supported now on many platforms and pretty efficient but if you really need OBJ you can use assimpJS (which is the JS port of assimp) to convert your files.
I following this tutorial
for import and work with viewpoint from Naviswork to Forge Viewer.
Do you know any solution or API on Naviswork to export this viewpoint data and saved it on my Database. Thank you in advance !
It sounds like a Navisworks API question, instead of Forge. Navisworks API does not provide a direct method to export to saved viewpoints like UI does. I happened to answer a similar question in the past. just copied here for your reference:
There is not a direct API, but with SavedViewpoint API, you could dump the data from the objects, and write to the XML yourself.
http://adndevblog.typepad.com/aec/2012/06/navisworks-net-api-2013-new-feature-saved-viewpoint.html
It might be possible not all properties in the standard xml have corresponding object with API, such as terminal_velocity, however it would not impact your workflow, as most properties (especially camera related) are available with API.
About data of redline, activate each saved viewpoint one by one (by DocumentSavedViewpoints.CurrentSavedViewpoint) , call Document.ActiveView.GetRedLines(). It can return all info of the annotations: line, eclipse, text etc in Json format.
About data of clip planes, you could use Document.ActiveView.GetClippingPlanes(). Similarly, in Json format.
Hope it helps.
The sqlite database file properties.db is usually the biggest file in the output from https://extract.autodesk.io/.
What is it used for in Forge Viewer, and if it's not used, why is it available in the ZIP file?
The reason this example is copying both is that the purpose of the sample is to demo how to extract the 'bubble' from the Autodesk server. The Design File' properties are extracted in 2 formats: aka json (json.gz) and sqlLite (sdb/db).
The Autodesk Viewer only uses the json format, but other systems may prefer using sqlLite. The json approach makes it easier when you code executes in client browsers.
It is fairly easier to modify the sample to exclude the sqlLite database if you are not interested to get this file. I can point you which code you need to modify if that's something you want to do.
That file contains the components properties as a sqlite database, which are also contained in objects_xxx.json.gz. The viewer only uses the json format.
That article shows how you can easily run the extraction code your your side, it doesn't extract the .db file:
Forge SVF Extractor in Node.js
i have uploaded one 3D model into different formats (obj, stl, dwg) in A360 after checking into viewable of "https://myhub.autodesk360.com and https://dm.autodesk.io" the explode feature not working.
But in Dwg format explode feature working after half slider.
The explode feature should only work for files with a hierarchical structure, like assemblies & parts, or host and elements, etc. Usually .obj are simple shapes and this is not available.
I want to render 3D graphics files of autodesk (.dwg and .dwf) using three.js but three.js requires 3D data to be in json format. So, I need to convert these files to three.js readable json format. I tried searching on the internet but couldn't find any solution. Can anyone tell me a good converter for these files?
Thanks in advance.
In fact Autodesk already have a converter & wegbl viewer. Go to http://developer.autodesk.com and get a key for View & Data API. There is a server side REST API that allow you to upload a CAD file and convert to a JSON stream. You can hook to it and get the output. Or, even easier, just use the JavaScript client side API to embed the viewer on your website/app
Update
The API was renamed to Model Derivative + Viewer, the first translates the source file (e.g. DWG, RVT and many others) to a web-friendly format that can be viewed on the second, which is based on Three.js (and can be customized).