Hard surface problem - cylinder

megalmn2000

Hi all,

I have a problem with my hard-surface cylinder.
I've made a rectangle hole on the cylinder so I can put another shape inside.
The problem is : the form above the rectangle is too sharp, not smooth enough.
To support the rectangle shape, I just put some support edges around.

Thanks for support!

mdeforge

I think there's an example on this page or the page before it showing how to do something like that: http://www.polycount.com/forum/showthread.php?t=56014&page=19 I'm at work right now, not all the images are loading. Anyway, you should probably scroll through the thread anyway. Really good stuff.

Sean VanGorder

This is basically the classic "add more geometry case" case. Just start with a cylinder with a high number of sides and cut the rectangle into it. It will eliminate the need for support edges and will keep the roundness as well.

Mark Dygert

Close, I think you where thinking of page 20
http://www.polycount.com/forum/showthread.php?t=56014&page=20

Yep ultimately it will help to add more sides to your cylinder before operating on it.

megalmn2000

Thanks for the support everyone!
My bug isn't fix yet but the links are really great!

Mark Dygert

I think you can solve the problem by making the cylinder as equally dense as the rest of the mesh before punching a hole in it. You won't want to add those edges now because they won't effect the shape and round it out, they'll just be extra edges along one of the sides in a lower poly cylinder.

If you start with a cylinder that has more sides, one that will match the area highlighted and subdivide all the sides equally you can minimize the undesired shading.


The problem currently is that you're cutting in edges that change the density and shape of the cylinder. You can solve the density problem by working on a cylinder that has more sides to start with, which will also help it hold shape as you add to it.

So instead of punching a hole that lands between the edges of your cylinder you start off with a much more dense cylinder so that the hole lands on the edges. Think of it like a grid if that helps, you want to land your cuts on the grid of the cylinder.

megalmn2000

Thanks Mark Dygert!

EarthQuake

updated the other thread title, lol