need 3d cad!

azlan · Posted: Mon Mar 22, 2004 2:06 am Post subject: need 3d cad!

Hi all!

I have been searching for some time to find a 3d cad program that will run under gentoo.

I have been using Qcad for some time but it is very limiting (aside from the bugs, edited lines that reappear no matter what you do).

I am a shipwright by trade and yes I know about hullform. But that program doesnt do 3 dimesional mechanical drawings.

I have used both Pro/Engineer, and CATIA, but can afford niether for my personal use. (unless somebody loans me $10G)

I would try Varicad but the demo only comes in rpm form. the other program that I have found is an app called GraphiteOne

http://www.graphiteone-cad.com/en/

But there are a couple of issues involved with.

One: it uses OpenCascade, I hear that it needs Mesa and there might be a conflict with my nvidia opengl ( I don't want to lose opengl)

Two: it , again only comes in rpm form, however there is a community supported edition.

If anyone has some pointers or tips that would help me I would be glad to try to get it working, I have made ebuilds, and I have some basic, shell/python skills. (beginner)

I am not to familiar with RPM however.

Pleas no use windows posts please. I wouldn't be posting here if I wanted that kind of info)
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ewan.paton · Posted: Mon Mar 22, 2004 3:39 am Post subject:

arent there programs which extract rpms to tarballs or you could just emerge rpm and install it that way.

as for cad i remeber a while back ptc doing a student/personal edition for £120 and wildfire is suposed to have a linux version.

if you want open source solutions i did see a few but the user interfaces were iffy and i would be doubtful about the fea maths as its pretty specialised algorithms that need to be developed for users who can usually well afford the cost of professional software.

incidentally have you tried to construct a fea analsys of a compostite boat, assuming its not a chopped strand mat it seem like an interesting excersise especialy if you use foam sandwitch or do perform optimizations.
i got back into cad recently as i am toying with the idea of building an asymetric multihull{1} since a gyrocopter is going to be more paperwork than building. obviously proa's are a bit unusual and i have only seen 2 comercial designs and i wouldnt shell out the cash just cause most users arent smart enough to convert the design to actual size and take it to a comercial printer for lofting. this means ill probably spend a fair bit of time getting a design right to my area/requirments but hey i was going to build a dingy anyway i might use this as a scale model

edit here was a site i checked a few months ago http://www.freebyte.com/cad/fea.htm#fea

{1} west coast of scotland is suposed to have some of the best sailing around if a little cold
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azlan · Posted: Mon Mar 22, 2004 3:09 pm Post subject:

Actually in my experience, the fea analysis, doesn't give you much for real world usage. Kurt Huges once told me that he figures 75% on top of what should work. (that could be an exagerated figure, but gives you an example of what people expect to happen)

Composites are "what you make them" using different combinations of resins and fibre's, different, molding and v-bag techniques. From the bonding strength of the resin to the fibre to the matrix that holds it all together. (matrix accounts for far more than, bonding power).

But I digress, right now, I need something to model compound curves, and simple 3d mechanichal drawings----anyone??? :roll:

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stahlsau · Posted: Mon Mar 22, 2004 4:58 pm Post subject:

well, as said above, Pro-Engineer-Wildfire should be available for linux. sad but true, its really expensive...

ewan.paton · Posted: Mon Mar 22, 2004 5:40 pm Post subject:

its not like it was a major effort for them to port it, even i can remeber the days when pro e was unix only, i also remeber my proffesor telling me how linux was a toy os and would never be used by proper companies{1}. i think it was incredably shortsighted for them to charge our uni to effectivly train the users who would be purchasing their software, i mean lets be honest companies who need 3d cad sholud be able to afford it, unless the want to become autocad and take the lowend market they should have a cheap personal edition to enlarge their userbase.

{1} entering smug bastard mode
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k:arel · Posted: Tue Mar 23, 2004 4:13 pm Post subject:

i'm at the moment trying to run lignumCAD (http://lignumcad.sourceforge.net) but it also needs OpenCascade (600MB!!!) and Mesa etc.

What are your experiences with the other CAD programs? Is there a really good alternative to AutoCAD?
I thought lignumCAD would do good, when i saw the screenshots...

On this list you can find also other CAD programs, but i see you've already tried a lot of them and some links also are dead...
http://linuxshop.ru/linuxbegin/win-lin-soft-en/table.shtml

(link also posted earlier today in this thread: https://forums.gentoo.org/viewtopic.php?p=979365#979365)
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azlan · Posted: Thu Mar 25, 2004 10:57 pm Post subject:

I have used Qcad extensively.

Qcad is a very easy to learn and use 2d mechanical drawing tool.

Qcad is still buggy! Sometimes lines you have modified will return, but of course never on simple drawings usually, you have to have about 20 or more hours into a set of drawing before something like that happens.

A good example of a wierd Qcad thing is if you start Qcad make four parrellel horizontal lines, then make four vertical lines that are equal and intersect the horizontal lines. Now try to trim them so that you have two equal bars with two lines crossing inside them and ends.

Just try it, youll pull your hair out, though there is a way, it isn't very easy.

I have given up now and am installing debian on a second hard drive so that I can give Varicad a try. (at $400 if it works it is a steal, although, I still won't be able to use it on gentoo)
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ewan.paton · Posted: Fri Mar 26, 2004 4:43 am Post subject:

have you thought about emailing them asking for a more generic linux release, of you are spending $400 the least they could do is compile it for your os and preferably your processor. i had a go at installing the mandrake 10 rpm but the splash screen crashes on load, hears the code if anyone knows whats going on

azlan · Posted: Sat Mar 27, 2004 5:45 am Post subject:

I am now using a second hard drive - dual boot with Debian installed just so I can use Varicad, it seems to be going well, though it is not Catia (and I don't have $10G anyway).

I do wish they would build a version for, AMD_64 :wink:

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JeroenV · Posted: Wed Mar 31, 2004 8:15 pm Post subject:

I too have been looking for ages. As far as I'm concerned feature based design type CAD (a la SolidEdge, Pro/E, etc.) is the only thing acceptable to me.
(I've even considered developing my own system because I was so dissatisfied with the current offer, but it seems to great a task at this time :cry:

)

Thanks for the graphiteone hint, I'm going to try that!

As to FEM, I tried Code Astère, didn't get it to work properly... (however, I'm currently using Patran/Nastran professionally, it puts things in a whole different light: I was quite disappointed to see that a "state-of-the-art" standard system like that has a stone-age UI so user unfriendly*)

* before I used SolidEdge with Cosmos DesignSTAR, that went really smoothly.

I'll let you know when I find something useful. :wink:

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seventhguardian · Posted: Sat Oct 23, 2004 5:16 pm Post subject:

hi!

any of you got any luck installing graphiteone?? i'm trying to install it but i've got MANY failed dependencies.... and i don't know for sure what to emerge..

this is what i get with OpenCascade rpm:

seventhguardian · Posted: Sat Oct 30, 2004 11:26 pm Post subject:

Hi!!

Forgot rpm's "--nodeps" arg...

Anyway, i used rpm2targz and installed from that.. It still doesn't work, but i'm into it

I already tried it in a mandrake system and it sure is better that any of the gpl'd cads i saw. But i'm having trouble on using it under gentoo.....

Any of you would like to help?

Paran0id · n00b Joined: 11 Jun 2002 Posts: 35 Location: Sweden

Well, I just gave Varicad a try and it seems to be working pretty well.
I used the SUSE 9.2 rpm package, and did as follows:

1) Converted the rpm to a tarball using rpm2tgz.
2) Extracted the tarball.
3) Removed KDE specific stuff (I don't use KDE on my system).
4) Manually moved the extracted varicad directorys.
5) Emerged "kdelibs" (3.3.2-r2).
6) Started varicad.
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hgebel · n00b Joined: 03 Feb 2005 Posts: 2

I've got GraphiteOne running, I installed lib-compat and turned the graphiteone-* rpms into tar.gz with rpm2targz. then I extracted the tar.gz files from / and linked the opengl files to /usr/lib with 'ln -s /usr/lib/opengl/xorg-x11/lib/libGL.* /usr/lib/'.

hgebel · n00b Joined: 03 Feb 2005 Posts: 2

Hypnos · Posted: Thu Feb 03, 2005 6:38 pm Post subject:

Might BRL-CAD work for you? Recently open-sourced, and there is an ebuild out there.
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riprjak · Posted: Sat May 07, 2005 2:05 am Post subject: