LinuxQuestions.org
View the Most Wanted LQ Wiki articles.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices

Reply
 
Search this Thread
Old 11-26-2007, 05:14 PM   #1
ctroyer
LQ Newbie
 
Registered: Nov 2007
Posts: 10
Blog Entries: 13

Rep: Reputation: 0
CAD 3d modelling - not art/animation


I am curious about what the community thinks about the current state of the art in opensource CAD software. At work, I have used SolidWorks, ProE and Alibre. I also use Alibre Design Express at home(Windoze), but like most, I would like to finally sever this last remaining tie to the dark side. I have no complaints about the capabilities or quality of any of the preceding software products, but can't stomach continuing to pay taxes to Microsoft. I use BRL-CAD, I installed it on my Slackware12 boxes, and am clawing my way up the learning curve, but really don't need to do any lethality analysis, so it's a bit much. What I am dreaming of is a parameter based sketcher, similar to the SolidWorks/ProE/Alibre interface, that can then extrude the sketch (parametrically) to build up solids. There are two divergent paths at this point for real world engineering work. One is to generate 2D prints from the 3d model, and the other is to provide for constraint based assembly of the modelled solids. The icing on the cake would be to use kinematics to model physical interactions of the modelled solids - (really dreaming now) for both rigid and deformable bodies. To be commercially viable, a CAD/CAM package also ought to include a configurable CNC code posting feature.
It seems to me that all the pieces of the puzzle are available out there in the opensource world. The rigorous solid modelling capabilities of BRL-CAD, the rendering and meshing utilities in OpenCascade, various opensource FEA libraries....
Seems to me that what remains is for some enterprising (or masochistic) individuals to start putting all the pieces together in a GIMP style effort to provide the 'killer app' for the Linux - opensource world.
 
Old 11-26-2007, 06:58 PM   #2
pljvaldez
Guru
 
Registered: Dec 2005
Location: Somewhere on the String
Distribution: Debian Squeeze (x86)
Posts: 6,092

Rep: Reputation: 269Reputation: 269Reputation: 269
I have the same problem, though since work provides the tax to Microsoft I'm not too hung up on it. But it would be nice to use linux all the time instead of using XP for Solidworks.

So far, my opinion is that open source 3-D CAD isn't quite there. If the company would shell out the $$$, I'd probably use Pro/E. I've heard good things about VariCAD, but never used it. Never tried gCAD3D either...
 
Old 07-13-2008, 03:47 PM   #3
brlcad
LQ Newbie
 
Registered: Jul 2008
Posts: 5

Rep: Reputation: 1
Quote:
Originally Posted by ctroyer View Post
I am curious about what the community thinks about the current state of the art in opensource CAD software.
...snip...
It seems to me that all the pieces of the puzzle are available out there in the opensource world. The rigorous solid modeling capabilities of BRL-CAD, the rendering and meshing utilities in OpenCascade, various opensource FEA libraries....
Seems to me that what remains is for some enterprising (or masochistic) individuals to start putting all the pieces together in a GIMP style effort to provide the 'killer app' for the Linux - opensource world.
That is exactly what is going on at the BRL-CAD project.

Unfortunately all of the pieces are not really available on the open source side. There is an astounding amount of effort (and background knowledge) that has to go into making an open source CAD system. That has been part of what has kept open source pretty much out of the picture as being a viable alternative to some of the big names in commercial CAD.

Even without getting into the assumptions that are made when someone says "CAD" (as that alone varies *heavily* from person to person, see http://brlcad.org/Industry_Diagram.png for example), there is a lot of manpower required. BRL-CAD has nearly 500 person-years of effort invested in it yet it's still missing a lot of features required to encompass even a fraction of the overall CAD industry. That amount of effort is more than the Blender modeler (which has exceptional visibility/activity) and more than any other open source CAD project, but then BRL-CAD's usability and sheer size is a tough hurdle for new developers.

Improving usability is BRL-CAD's current #1 project priority with development efforts progressing on a new GUI prototypes and more comprehensive/robust support for BREP geometry. Participating in the Google Summer of Code has done wonders for increasing development efforts but more is always better.

If folks want to help make things better, the best suggestion would be to simply get involved. Make patches, write documentation, help make things better. ;-)

Cheers!
Sean
 
  


Reply

Tags
autocad, cad


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What is the best 3d modelling and animation program for linux(preferably free) cowboy45 Linux - Software 4 01-09-2012 01:37 AM
I wuld like to use linux but im a cad operator so things like auto cad needs to work Juvencio Linux - General 7 06-15-2007 10:58 AM
3D Modelling with linux Furlinastis Linux - Software 5 09-15-2005 06:13 PM
Complicated 3D modelling software futurist Programming 7 03-14-2004 05:23 AM
traditional art vs modern art acid_kewpie General 14 10-27-2003 01:12 AM


All times are GMT -5. The time now is 09:49 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration