Hi SW03,

It probably isn't that simple, I'm just approaching this like applying objects like a texture. ;)
And as I said it all gets squeezed anyways, as it flows to the poles. But trying this with circular
patterns seems to look relatively undistorted at the equator.

As for the math involved, like Barbie once said "Math is hard!!" :)

Michaels' script link in post #28 can sometimes help extract curve lengths for more unusual shapes.

I'm looking forward to the next Beta where some of these distortions can maybe handled differently.

Yeah for a sphere the 2 to 1 ratio works because a sphere is made up of a 180 degree vertical arc which then revolves around a 360 degree arc. So that 360 to 180 degree arc ratio is where the 2 to 1 would come from.

> I'm looking forward to the next Beta where some of
> these distortions can maybe handled differently.

The next beta will have a new "Projective" option which projects the object along the base surface's surface normal onto the other object. It will be helpful for avoiding distortion for cases where you want to apply an object to a more localized area of the other object, but since it uses ray-shooting type projection it won't be applicable to a pattern like you've been showing previously that wraps around an entire sphere.

I don't know how it would be possible to avoid distortion for a fully wrapped pattern because it's not physically possible to take a 2D object like a piece of paper and apply it to a doubly-curved object like a sphere and not have any bunching in the paper...

Remember - MoI can't do things that are physically impossible... ;)

- Michael

Come on now Michael, all we ask as users is that you break all known laws of the physical universe
and we NEED it yesterday for free!!! ;)

""""""""""Remember - MoI can't do things that are physically impossible... ;)"""""""""""""""

Ahhhhh. Spoke too soon again, didnt ya!!! :o

Burr - There is neither anything wrong with that object, nor was it impossible...

"Do not try and bend the spoon. That's impossible. Instead... only try to realize the truth."
"What truth?"
"There is no spoon."
"There is no spoon?"
"Then you'll see, that it is not the spoon that bends, it is only yourself."

(Matrix quote)

@ Burr, that looks like my bed every morning, not impossible ;)

@Mike, are you 4ft tall with a shaved head ;)

Cheers

Hi Burr, I should probably have said "Mathematically impossible" instead... ;)

- Michael

@Danperk
I have made a little video of your concept about the tore ;)
Because some people don't very well undestand this fabulous function Flow!

Sorry it's in French, but as it's visual, you recognize easily your method I believe :)
http://moiscript.weebly.com/enrobage-dun-tore-v3.html
Thx for the exploration!

Superb Tutorial.
I learned a lot.

@bem Your ToroïdalKnots script rocks! Bravo !
Added ;)
http://moiscript.weebly.com/toroiumldal-knots.html

Looks good Pilou!

I'm Canadian, so I understand French, well some French. ;)

I'll try to do a video example of how to use the Curvelength script when I get some time.
It helps to get the correct size for the plane you map pattern to..

About FLOW:

Is the function FLOW can to deform one round extruded logo (by exemple) on a half-sphere?

I have tried to make this, but I never succeed to get a good result.

Somebody has a solution?

It seems that "flow" runs well with a numbers of patterns to a surface or line, but to deform one group as we would, is not easy.

How work "flow"? What are its limits, & the errors to don't do?

Thanks

Make your half sphere from an Arc + Function Rail Revolve
that must be more easy ! ;)

Before the Michael answer :)
For speedy result without headache don't hésitate to rotate anything from a previous result done
Surface, Letters, Sphere , make some flips ...
Only compt the result ;)
Here I have inversed the letters ;)

Hi Bard,

> Is the function FLOW can to deform one round extruded
> logo (by exemple) on a half-sphere?
>
> I have tried to make this, but I never succeed to get a good result.

If you've used a boolean operation to cut the sphere, it will be a trimmed surface with the full original sphere surface as the underlying surface beneath the trim curves.

Currently Flow uses the full underlying surface so that is probably what was messing you up.

If you construct a half sphere using some other method than trimming (like by doing a revolve of a 90 degree arc like Pilou mentions), then you should see the result that you were probably expecting. You can also use the ShrinkTrimmedSrf command on the booleaned sphere to shrink the underlying surfaces down to the trimming boundaries.

See this previous post for some additional explanation:
http://moi3d.com/forum/index.php?webtag=MOI&msg=4442.6


In the next v3 beta Flow will automatically use only the visible area of the surface instead of the full underlying surface.


> It seems that "flow" runs well with a numbers of patterns to a
> surface or line, but to deform one group as we would, is not easy.

Sorry, I'm not understanding this part - what is it about a group that is not working for you? You can do flow with a group of objects, just select all the objects that you want to deform before running the command.

- Michael

Hello Michael,

Ah yes, sorry "objet" to define a "group", was not the right word.
Here that I call a "group" is something that doesn't exist in MoI (Lol).

We wait this function that consists to merge or link together several not contiguous (adjacent or adjoining) objets, in only one element, entity, component, unit, by boolean union or one group of objets, by association (the function "combine, unite"). By example the point on the "i" should to be one thing & not 2 things.

We should to take a "group" and align it with one another objet. This thing is impossible to do in MoI, isn't it?

So, a group (several interdependent objets joined in one = Union, or Unit), like a logo = 1 thing, one element composed or combined with several objets (not a pattern, a motif = repetition of the same group of objets), is very hard to deform on a half-sphere (or other form). It's that I would to say.

How can we control, where this "group" goes to the surface of destination? I ask this question because, of course, I don't understand well how runs the new "FLOW" function.

To call of "group" it's a deformation by the work on Illustrator & many others softwares.

I took the example of a logo, but with a simple only one TORUS on a sphere, half-sphere or portion of sphere it's the same thing. How can we get a perfect circle well bended? That is the question.

If we put a square base surface under this TORUS, it arrives very strange things (bug). If we put a circle under this TORUS that runs, but to get a good bending out of shape, it's problematic. What solution? How to control well, the position of destination? ...

Thanks you, I go to read all about "FLOW".

For make more easy answers post some images of the different problems or not expected results!
Even files 3DM in case of complex problem!
That help a lot Michael ;)

To illustrate my problem, the mapping of the TORUS never arrives to the full height of the sphere or half-sphere or I don't arrive to have a circular deformation of the Torus on the sphere.

Blablabla...

You can try the "rigid" check mark.

Hi Bard,
Also, orient your objects so they are "flat" in the top view, instead of flat in the front view (vertical)

then try it without the rigid check mark.