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by realthunder
Thu Apr 25, 2019 7:29 am
Forum: Developers corner
Topic: Development in Expression and Spreadsheet
Replies: 4
Views: 335

Re: Development in Expression and Spreadsheet

How much is the benefit? or the other way around, would it still be feasible to use the improvements without the patch or would it be unbearingly slow? The reason I ask is for future maintenance: there will come the point when one needs to rerun bison, to fix some bug or make a improvement or whate...
by realthunder
Wed Apr 24, 2019 11:32 pm
Forum: Help on using FreeCAD
Topic: How to declare some user defined "Propagated Properties"
Replies: 6
Views: 110

Re: How to declare some user defined "Propagated Properties"

There is a special type of object in FC called 'Extension', which can be dynamically created and attached into any object you see in the tree view. My 'Link' implementation is in fact a type of 'Extension'. We can create a type of Extension to achieve what you want, specifically, an extension derive...
by realthunder
Mon Apr 22, 2019 8:58 am
Forum: Assembly
Topic: Assembly3 preview
Replies: 1240
Views: 98613

Re: Assembly3 preview

EDIT3: Ok, I re-imported the step file using the assembly3 release (ReduceObjects=true) instead of FreeCAD 0.17, and that appears to have shrunk down the main memory usage to 1.7GB and disk representation to 20MB. It did a much better job importing the STEP file, I see duplicate instances appear to...
by realthunder
Fri Apr 19, 2019 11:32 pm
Forum: Developers corner
Topic: Development in Expression and Spreadsheet
Replies: 4
Views: 335

Re: Development in Expression and Spreadsheet

Hello, I like the more advanced functionality, and that it looks like python is awesome! The patched bison, is this mandatory or does it work with the default one? Because that sounds like big trouble for maintenance in my ears. The patch is only for performance reason. It enables c++ move syntax. ...
by realthunder
Thu Apr 18, 2019 11:44 pm
Forum: Assembly
Topic: Assembly3 preview
Replies: 1240
Views: 98613

Re: Assembly3 preview

P.S. Initially you said this might not be a suitable use case for drafting purposes. But i don't' see all that much difference, compared to an assembly. An assembly can have a million parts, suppressing their document objects and resulting to visual representation, promoting only the document objec...
by realthunder
Thu Apr 18, 2019 12:40 am
Forum: Assembly
Topic: Assembly3 preview
Replies: 1240
Views: 98613

Re: Assembly3 preview

Could such an array consist of different (links to) objects, each therefore being one element in an array. Could a Link feature suppress and promote linked (parent) feature document object?[/list] When links to a group, each child object is treated similar as an array element. But no, it cannot be ...
by realthunder
Thu Apr 18, 2019 12:27 am
Forum: Assembly
Topic: Assembly3 preview
Replies: 1240
Views: 98613

Re: Assembly3 preview

Can you elaborate more how strict protocol enforcement would allow software like NX, CREO, CATIA larger assemblies even over the latest version of Solidworks (2019)? An example may help. I can pass this onto teaching assistance since what they say does not seem right or more like hand waving. Thank...
by realthunder
Wed Apr 17, 2019 2:11 am
Forum: Assembly
Topic: Assembly3 preview
Replies: 1240
Views: 98613

Re: Assembly3 preview

Please check out the links in my previous post. Particularly links from around 2012. Yes, I've read some of them. I have also previously watched SW 2019's new feature demos on youtube and amazed by their new assembly improvement, which leads me to say that nowadays, those mid-rage CAD can already h...
by realthunder
Wed Apr 17, 2019 1:54 am
Forum: Assembly
Topic: Assembly3 preview
Replies: 1240
Views: 98613

Re: Assembly3 preview

Hi realthunder. I brought this up before and it has always been in the back of my mind ever since. Some class teaching assistants claim that CAD products like NX, CATIA and CREO can handle very large assemblies of say 100,000 parts while Solidworks (maybe not Solidworks 2019) and others cannot. Usu...
by realthunder
Wed Apr 17, 2019 1:25 am
Forum: Assembly
Topic: Assembly3 preview
Replies: 1240
Views: 98613

Re: Assembly3 preview

@realthunder Read this more as a thinking out loud type of question. App::Link is therefore a lightweight representation of the linked feature. Being capable of extracting some properties from the linked feature document object. A discussion has been started here: https://forum.freecadweb.org/viewt...

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