you have no better time to make just a "line" of Boolean and make some Array Curve? ;)

Hi Danny,

Thanks a lot for the close-up, I knew there was some cool details there, but I didn't expect to see this kind of crazy booelans !!
I hope you'll render some huge shot anytime to capture all this details !

Fantastic work ... again !

I just tried the demo for hypershot. I also brought it from MOI into carrara by OBJ, and imported into a group. Then assigned simple colors but when I export from Carrara to import to Hyper all the pieces are flat black. Do you use quads/tris or nogon out of MOI? Any idea about this?

Hi Grendel,

>....when I export from Carrara to import to Hyper all the pieces are flat black.

Yeah, It happened to me at first, then I tried some different settings in Carrara and found that with the material output options 'None', 'Colours Only' and 'Textures' I think, set it to 'None', yes I know it's strange to apply colours then output it with no colours but for some reason I think it rewrites the object file for Hypershot to recognise the separate objects and then you should be able to see the objects in shades of blue and green.

Could you let us know if this is the case for you ?

Oh, yeah quads/tris


---------
~Danny~

Just to show that some great learning from your work.

Thanks Danny.

Brian

No Probs Brian, that's why we're all here, to learn.

Cheers

Hi Pilou,

>you have no better time to make just a "line" of Boolean and make some Array Curve? ;)

That's how I did that, Curve>sweep (circle)>Array>Boolean but if I tried to Boolean all the Array at once MoI would fail, then found that it could Boolean 3 or 4 of the arrayed sweeps at a time.
Is that what you mean ?

---------

Danny, Grendel

For your material issue, doesnt the SeparateOBJ editor fix that or are there limitations still?

Also Danny,
Sometimes my mind gets stuck. Would you share how you did the threads?

I'v been trying a sweep like this. Is it close?

Danny, that was it, go figure that you would need top specify none ;(P

Hi Burr,

>For your material issue, doesnt the SeparateOBJ editor fix that or are there limitations still?

That's the first thing I tried but the SeparateOBJ tool separates at sharp edges so a solid, say a cube, would end up as 6 separate objects, so you could imagine how many separate 'sheets' I would of ended up with in this model.
Unless I'm doing something wrong ?

>I'v been trying a sweep like this. Is it close?

Yeah, it is close but I find the profile will twist around it self so I used 2 rail helix curves, what I mean is you offset the second helix by the depth of the profile.

While on the subject of modeling threads Michael, in another cad program I use, within the sweep function there is a forced direction option so when you do something like a thread or spring with a non round profile using a single guide rail, you can force the sweep say in the axis direction (z direction) and this will control the twisting nature of the profile, is that something that can be implemented into MoI ?


---------

Burr

If this makes sense--to the question!

It all relates to the size/placement of the shape.
(AND--using the, say, flat setting in the sweep options)

Brian

>>Yeah, it is close but I find the profile will twist around it self so I used 2 rail helix curves, what I mean is you offset the second helix by the depth of the profile.

Could you dumb this down a bit for me? possibly a screen grab of the curves?

If you have time.

Thanks,
Burr

you got me trying this! It works but I may be overcomplicating something.

>>If this makes sense--to the question!

It all relates to the size/placement of the shape.
(AND--using the, say, flat setting in the sweep options)


Thanks B,
This is similar to mine and I'm having some issues with a boolean at the end. :o

Hi Danny,

> <...> you can force the sweep say in the axis direction (z direction)
> and this will control the twisting nature of the profile, is that
> something that can be implemented into MoI ?

Yes - if I understand you correctly you can get what you want with the Twist: Flat option.

The default Twist: Freeform does a kind of gradual rotation around the curve tangent, it is more suitable for a more arbitrary path swooping around all over the place.

Twist: Flat will only perform rotations of the profile around the world z axis, which keeps the profile more stabilized with respect to that direction.

Here's an example from the help file:

Given a profile and a path for the sweep:



The Twist: Freeform option will produce this:



while the Twist:Flat option will produce this:




Freeform is the default because it handles more arbitrary curves going in any direction - the flat option does not behave well on paths with curve tangents that go close to that same z axis direction, only rotating around z results in a degenerate situation when the curve tangent is also pointing in that same direction.

- Michael

Hi Michael,

I discovered what I was doing wrong, I just realised that the 'flat' option only works the way it should when the axis of the thread/spring is along the z axis, so if I do the same thing with the axis on the y direction you get funny twists, I guess if I want to orientate the sweep say along the y axis then I would have to set up the cplane to make the axis, z then reset the cplane later.

What about, when you pick the flat option, x y z tick boxes appear so you can pick what direction it will force the sweep, because we don't always model something like this in the z axis ?


---------

Burr

The SIZE is very important! (End of quote)
And, see a new thread I posted, Boolean can take time--maybe a full bottle of Coopers Stout!

What a drag!

Brian

Is this thought applicble?
(Back in my fitting and turning days, 1948!)

One gets the lathe (sweep) going before the lathe cutting tool gets to the object?

Brian

Hi Danny - re: Twist Flat option - yup having some more control over the "flat direction" is on my todo list to tune up with a batch of sweep stuff, I hope to get about a week working on improving sweep stuff later on in v2.

- Michael

< That's how I did that, Curve>sweep (circle)>Array>Boolean but if I tried to Boolean all the Array at once MoI would fail, then found that it could Boolean 3 or 4 of the arrayed sweeps at a time.
Is that what you mean ?

No :)
More than like that (here an "helix": Array Circular with vertical step, Array Dir)
Boolean>Array>Array etc...
So just one boolean inside the first component ;)
The only difficulty is find the first component ;)
After it's very speedy and no problem of boolean!