Another approach to assembly solver (A2plus)

[easyw-fc]

Getting same performance as SolveSpace will be hard. Pure Python working together with FreeCAD's basic api will be fast, but not as fast as SolveSpace.

SolveSpace has been kept as python add-on also in A3 because of its license, GPL and not LGPL as FC would require to be directly included.
So probably you could get similar performances.

Enough. I concentrate on the solver..

Thx

[kbwbe]

Hello Maurice,

next version ready. PointIdentity-Constraint newly added. ZIP attached.
For me, in first tests, it works with fc0.17

pointIdent.png (87.28 KiB) Viewed 14063 times

[easyw-fc]

Hello Maurice,

next version ready. PointIdentity-Constraint newly added. ZIP attached.
For me, in first tests, it works with fc0.17

+1 nice addition

[kbwbe]

New Version attached.

solver improvements:
- new constraint point on plane

also done:
- some bugfixes in workbench

totally working constraints as there are now:
- point identity
- point on plane
- circlar edge constraint
- plane constraint
- axial constraint

following soon:
- point on line

after that:
- warning if solver cannot find solution
- undo of last solving

New constraint point on plane is working for me in a2plus-workbench..
Testers welcome !

pointOnPlane.png (103.38 KiB) Viewed 14028 times

kbwbe

[Jee-Bee]

Nice to see some work done in this!

[jbe]

1 Can we use "sub assemby" ?

2 Do you think than we can do simulation with your new assembly ?

3 Could you add a new tool : when all your assembly is done, export the file for a 3D printer ( make an OR logic between all the part...)

Congratulation for your work.

[kbwbe]

1 Can we use "sub assemby" ?

No problem if your are still using fc0.16. The workbench was designed for that. For fc0.17 i still have not tested. Will do that after rough finishing the WB.
Make good backup of your files. Test it and please give feedback. There will be perhaps some errors shown in the log.

2 Do you think than we can do simulation with your new assembly ?

When ready, it should be possible. Perhaps a little bit slow, since everything is programmed by pure python

3 Could you add a new tool : when all your assembly is done, export the file for a 3D printer ( make an OR logic between all the part...)

You can try the "SAS" Button (SimpleAssemblyShape), which creates a single compound of the whole assenbly. You will find it then in the object tree. But do not really know wether a compound does work for 3D printing. It is not realy a solid i think. Simply do a test.

kbwbe

[jbe]

Where install a2plus, on Ubuntu 16.04 ?

Thanks

[kbwbe]

As promised, here is a new version, ZIP attached...

New Constraint:
- pointOnLine

In some quicktests, it's working
.
.

pointOnLine-1.png (95.04 KiB) Viewed 13920 times

.
.
kbwbe

[kbwbe]

Where install a2plus, on Ubuntu 16.04 ?

Thanks

Unzip ZIP-archive. rename, if necessary the unzipped folder to "a2plus"

copy complete folder to:

/home/YOURUSERNAME/.FreeCAD/Mod/
(replace YOURUSERNAME with your account )

After restarting FreeCAD, "a2p" should appear within available workbenches

Which FreeCAD Version do you use ?

PS: THIS IS AN VERY EARLY TESTVERSION, DON'T DO IMPORTANT WORK WITH IT !

kbwbe