Fixing Blend problem  1-20  21-35

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 From:  Andrei Samardac
6063.1 
May be will be useful for someone who meet this problem)


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Portfolio: www.samardac.tumblr.com
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 From:  Michael Gibson
6063.2 In reply to 6063.1 
Hi Andrei, is it possible for you to post the 3DM file of this so I can test with it over here?

I've been working on Blend for a while now to make it possible to select more than one edge on each side of the blend instead of only doing one single edge on each side at a time.

It should help with things like what you're showing here, since having more of the blend constructed in one single operation can avoid problems related to building them only one little piece at a time.

This would be a good test case for me to see if it's working to solve this particular problem or not yet.

But it needs some conditions to work well also, like in order to make a good large blend the edges need to be smooth to one another and the surfaces should not be too different in shape right at juncture points between different edge segments. That's why I'm not 100% sure if it will solve this particular case or not.

- Michael
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 From:  Frenchy Pilou (PILOU)
6063.3 
It was the same sort of trick than with the Bottle recessed of Majikmike! ;)

In French ;)





Arc following was used for cut the surface then Blend it again

EDITED: 25 Jul 2013 by PILOU

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 From:  Frenchy Pilou (PILOU)
6063.4 
I have trimed a sphere for test the Blend Function
But even result visually seems very good, I am not sure that is 100 % safe ?
I ask the question! Does this a real sphere ? Seems yes but want to be sure! :)

EDITED: 26 Jul 2013 by PILOU

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 From:  Andrei Samardac
6063.5 
Hay Michael,
This is link to this project. As I noticed latter there was little geometry imperfection, very little, you can see it by big magnification. I don know how it appears because this model was made not by me.
Any way even with this geometry imperfection it allows me to make solid. So I think this project allow you to taste your new tool in critical situation)
https://docs.google.com/file/d/0B1uI4ljG15POZmdVTENFZmx4WkE/edit?usp=sharing

Also I give you another model that I worked on. Here was a lot of blends with problematic connections. I gave here original model and model with delited blends. Also You can discover and delete some more blends for your work.
https://docs.google.com/file/d/0B1uI4ljG15POSEFKOTRkSTN5Q0k/edit?usp=sharing


Pillou, yes I think I was inspired from this trick in this tutorial)
I mostly work as 3D Artist, so for me all that looks like sphere is sphere :)))
If you are cad designer where 100% precision needed I don't know if it real sphere))) You can test it in rhino analysis tool, may be it will help)
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 From:  Michael Gibson
6063.6 In reply to 6063.5 
Hi Andrei, thanks for posting the files for me to test with, it helped me to track down a bug in the new Blend stuff that I'm working on.

The update to Blend looks like it should help with this situation - basically instead of only being able to select a single edge on either side of the blend you'll now be able to select a sequence of edges on either side and as long as the edges and surfaces under them are tangent to one another you'll be able to get one single blend surface result like the attached version.

I think it should help for situations where you would previously have to build a bunch of separate blend pieces.

- Michael
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 From:  Michael Gibson
6063.7 In reply to 6063.6 
Also the updated blend will match a sequence of smooth edges by distance traveled along each chain, it should make things like the attached example work better, that's a new blend between 3 edges on each side in one go.

- Michael

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 From:  Andrei Samardac
6063.8 In reply to 6063.7 
What I can say Michael, It looks really great))!

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 From:  Mauro (M-DYNAMICS)
6063.9 
Michael:We have waited so long this blend upgrade.. :)

Take a look at this example:i think new improvement will not able to blend A-B-C-D- edges in one time
this because four surfaces are separate to each other,right? If not,we could be able to solve Futagoza's puzzle ! :)




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 From:  Michael Gibson
6063.10 In reply to 6063.9 
Hi Mauro, Blend will still remain a two-sided surface construction, what you are showing there is a 4-sided construction so no that is not covered by what I was describing.

In the future I would like to try and update Network to have continuity controls to cover the case that you are showing there.

- Michael
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 From:  Andrei Samardac
6063.11 In reply to 6063.10 
Network with continuity controls sounds great)

M-Dynamics, Nsided doesn't work here?

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 From:  Frenchy Pilou (PILOU)
6063.12 In reply to 6063.7 
Does 3 a maximum?
And that works also with 3 on a side and 2 on the other side ?

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 From:  DannyT (DANTAS)
6063.13 In reply to 6063.7 
Hi Michael,

You have been busy, looking forward to the multi-edge blend the outcome looks great and I know you've probably got other things up your sleeve.....waiting patiently :)

Cheers
~Danny~
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 From:  Mauro (M-DYNAMICS)
6063.14 In reply to 6063.9 
I posted a "limit-case" ;)
If we need just to fill a hole,like in this case,we can use -NSIDED-, or select ABCD edges and choose NETWORK, or select AB like sections and CD like rails and do the SWEEP
all three solutions will make a patch...... without a continuity,this means that if you do a close-up you can see the seam
Different situation if we want to have a continuity of curvature (G2) between the new surface and,at least,BCD surfaces
This is an high-end feature that maybe only ultra-expensive modelers can handle,often called also CLASS-A surfaces (a typical case where this feature is required is car-modeling for manifacturing)
Actually, in MOI,we have just BLEND that allow a continuity choice,now improved with multi-chained edges
if in future we will also have a continuity choice in NETWORK we will able to make cars much more better

Thanks again Michael ! :)
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 From:  Andrei Samardac
6063.15 In reply to 6063.14 
As I know Nsided works with continuity and have to work here or i'm wrong?
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 From:  Mauro (M-DYNAMICS)
6063.16 In reply to 6063.15 
Which kind of continuity?
G-0=position
G-1=tangency
G-2=curvature
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 From:  Andrei Samardac
6063.17 In reply to 6063.16 
G1

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 From:  Mauro (M-DYNAMICS)
6063.18 
I just don't know which kind of curvature can handle -NSIDED- tool

Avoiding misunderstandings i cleary speaked about G-2 why? Because it's only option that gives a perfect junction between two surfaces
This means(one more time)that you can't see seams or artifacts in junction area...it's perfectly smooth(continuity of curvature)
If you want better know about, here is a link of SOLIDS++ kernel that MOI use:

http://www.integrityware.com/solids.html

and here some examples of continuity options from them:

http://www.integrityware.com/AdvancedSurfacing/Blending.pdf

I posted that "limit-situation" based upon example of Futagoza (Stefan)
That time,Michael well noticed seams at first close-up and speaked about not perfect junction
I know..NSIDED can handle my " limit-example" but also give a not perfectly smoothed surface
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 From:  Andrei Samardac
6063.19 In reply to 6063.18 
It defenetly use some kind of tangency I assume that it is G1 but Michael knows better.
And in not very complex situation like yours I think it can produce good result.


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EDITED: 27 Jul 2013 by ANDREI SAMARDAC

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 From:  Mauro (M-DYNAMICS)
6063.20 
Sure it produce good results !! :)
It always depend what you want...in advanced modeling usually G1 is not enough
i have read here from an user in the past:Apple wants just G2 filleting in their stuff...(take a look at the edges of I-Phone )
..or imagine to model a car with lot of patches that need to join together without seams ;)
Let Michael to say something,if he's not too busy :)
hope this time no misunderstadings :)
M
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