Question about hard surfaces techniques on cylindrical models

delarobe · Dec 2015

edit 1: embed pictures

hello polycount

i have been trying for the last 2 days to perfect my modelling on cylindrical surfaces, but i have hit a wall

my high poly is always with some kind of artifact, regardless of the technique i tried, and i tried all the ones that i knew of, here is a list of those i tried and screenshots of the problem

low poly:

Image: https://i.gyazo.com/f9a04e991b2c607aebd754a267d56439.png

high poly with bevel on edges:

Image: https://i.gyazo.com/606e1c9904cffa8a6011ceaa830e8808.png

as you can see, there is pinching in the corners

high poly with supporting loops:

Image: https://i.gyazo.com/5ba4c258f672666995fffb6e21edd5e6.png

there is also some sort of artifact in the corners, i could fix that with a supporting loop like this:

Image: https://i.gyazo.com/fe460371cfd86de72b168767375c5c98.png

but it causes a seam in the model, and it loses its cylindrical surface:

Image: https://i.gyazo.com/8765b1d9251736b0b77c91e60c03b5d0.png

there is also the rounded edge that can only be fixed through the same troubling edge loop:

Image: https://i.gyazo.com/f2e73b7c4b62fff298afb64b21a4550f.png

Image: https://i.gyazo.com/20b4f54c065dd192a5ff88f5b51b6de0.png

high poly with creased edges:

Image: https://i.gyazo.com/4ebd74528d961c05c585a0a1e7ab336c.png

this one messes up the normals, it may look ok from afar, but as you get closer the problems becomes clear, as well as pinching in the corners

i tried these 3 techniques and didnt get any good result, i need the highpoly to be near perfect to bake the information to the lowpoly, so im stuck at the project for now

i dont really like asking for help, because if feel like it wastes other people time, but i have no choice here, as i have been having trouble with cylindrical surfacesw for a few months

thaks for your time

skyline5gtr · Dec 2015

You should embed the pictures , its a pain in the A opening each link and comparing them

delarobe · Dec 2015

how can i do that? im not used to posting anything in the internet

i know what it is, i just dont know how to do it

Enzyke · Dec 2015

There's a button that looks like a sheet of paper in the toolbar above the space where you type your reply, reading "Attach image/file". Click the arrow and you'll be able to paste images from websites in your post.

melli06 · Dec 2015

One solution which might not be perfect, would be to use edge slide and try and spread the the edges out where you don't want a hard edge, you could also separate the mesh and use cap the end of the separation. Good luck! Love to hear if this works out!

mystichobo · Dec 2015

Adding more geo to the sides of your cylinder will fix pretty much all of your problems.

delarobe · Dec 2015

@melli06: it still messes with the roundedness (?) of the cyllinder, and so it messes up the bake to low poly, i have tried that on other models

@mystichobo: adding geo where exactly? i did add geo when trying with supporting loops, but that causes unwanted problems

mystichobo · Dec 2015

@delarobe:
More sides on your cylinder,

Image: https://dl.dropboxusercontent.com/s/pmbiutl20x3ia0k/2015-12-21_20-30-22.png?dl=0

Image: https://dl.dropboxusercontent.com/s/wi3agqipw9vb6le/2015-12-21_20-30-42.png?dl=0

delarobe · Dec 2015

@mystichobo

that worked, as well as deleting some supporting loops, it reduced the pinching to very subtle levels, its not perfect but i can work with it now, thanks!

Image: https://i.gyazo.com/a9f38eb12f5610fe9ce5c59d5ccad4f5.png

Image: https://i.gyazo.com/9afa755b4afd6e258fbec5b8d6624905.png

Cube Republic · Dec 2015

That looks like Blender. Have you tried edge creases?

delarobe · Dec 2015

@Cube Republic yea, its the last image, it was the worst one

Cube Republic · Dec 2015

Did you model that as an array using an empty to offset?

delarobe · Dec 2015

@Cube Republic no

Cube Republic · Dec 2015

delarobe said:

@Cube Republic no

You might find it easier that way.

Question about hard surfaces techniques on cylindrical models

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