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HI Booleano
这是制作足球的正确方法。（This is the correct method for making football.）
https://www.bilibili.com/video/BV1Yp421U762/?spm_id_from=333.999.0.0&vd_source=913e265b028433d7f4030496da189d83

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Hi Michael
This example is not mine, but I think it was done with the Flow function, but how?

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Esto es muy complicado, no se tu nombre, 这是制作足球的正确方法

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Seems you have not the good start plane surface!
you must have 2 sorts of geometric figures!

12 pentagons & 20 hexagons


So maybe for the flow take only the 12 pentagons! ;)
You will obtain directly the missing hexagons! ;)

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Hi Booleano

> This example is not mine, but I think it was done with the Flow function, but how?

The completed soccer ball here was not done with Flow, because doing Flow from a plane onto a sphere will have compression in the deformed objects at the "pole" areas of the sphere.

But you can construct a polyhedron from a flat pattern by using Transform > Rotate > "Rotate axis" along with some construction circles to snap onto.

The technique is shown in these previous discussion threads:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2140.46
http://moi3d.com/forum/index.php?webtag=MOI&msg=911.11

- Michael

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HI Pilou

I'll try it as you say, let's see how it goes.
Thanks.

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Hi Michael

It's not the same, but it can be interesting.
Thanks.

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Hi Pilou

Sorry, this system doesn't work either.

Thanks.

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I don't tried it... i will see that!

Another thing: ask Show Points for see the radial "top poles"

Maybe you can trim them and remplace them by another same size meridian poles ! ;)

So maybe more suitable for the Flow! ;)

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Rotate the seam
Draw a square for trim the Poles N S
Boolean Merge or Trim for have 4 poles + middle surface
Kill North - South Poles
Copy rotate Left Right Poles
Join all = a solid sphere!
You must have a sphere with North South poles for use the Flow with more facility! ;)

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Not yet perfect but....



PS Another idea..
if resulting forms are deformed just draw the start forms with the "opposite" forms! ;)

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Hoi Pilou

Thank you

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My 2 cents.

MoI is not the easiest way to create this volume from scratch.
I think the easiest way is to use a software with a constraint resolver.
MoI don't have such feature.

You create pentagons and hexagons using same edge length.
Next, you add constraints to force your edges (or points) to be joined.

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Hi Pilou & Booleano - it isn't possible to apply a flat 2D plane onto a sphere without stretching or compression.

It's just a fundamental fact of geometry.

That's why Flow is not going to be the right tool for doing that.

Again, the technique that can be used for modeling a polyhedral shape is to draw polygons that have shared edges and then use Transform > Rotate > "Rotate axis" to pivot the polygons upward around the shared edge.

This is described and demonstrated in these previous posts:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2140.46
http://moi3d.com/forum/index.php?webtag=MOI&msg=911.11

- Michael

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Hi Phiro,

re:
> I think the easiest way is to use a software with a constraint resolver.

A constraint solver isn't needed - you can just draw 2 vertically oriented circles that then intersect at the needed point for rotate axis to snap on to.

More details here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2140.46
http://moi3d.com/forum/index.php?webtag=MOI&msg=911.11

- Michael

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Yep but as adventure game that is perfect from time to time! :)
I don't desesperate to find a solution! :)

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Another strategy...

Make a sphere from Subdivision! :)



It's winning for Flow if exists a geometric division by 6 surfaces of the soccer ball!

PS Trivial question...
Why the subdivision surface still stay in 6 separate faces and not redone a normal sphere when join or union?

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Hi Pilou,

re:
> Why the subdivision surface still stay in 6 separate faces and not redone a normal sphere when join or union?

The subdivision surface sphere is not quite exactly spherical.

Since it is not an exact match for a sphere there isn't any mechanism to try and convert it into an exact sphere.

If you want an exact sphere, you can make one with the Draw solid > Sphere command, instead of using SubD conversion.

- Michael

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Hi Booleano,

Could you tell what u want to do? What do u mean by "resolve this file" ?

- Psygorn

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Hi Phiro,

but I think MOI is the easiest way to create this volume! :-)

-Psygorn

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