Normals and Porcelain

[Normy]

Hiya all

I got A.M. some years ago and from time to time go and rejigg old models when I get a moment. So my knowledge seems to be a bit static/non progressive.

It's ok I have fun, there is someting that I was wondering about though.

I tried Porcelain and it seemed to create a large ridge or crack in the faces of my models all in the same place running down the faces across the left side of the models nose.

Once I realised it was Porcelain doing this I simply removing it from each model, that did the trick (so when I use Porcelain again I'll study it's properties first) no real problem there, what I also noticed during my worried hours was that not all the control points have a 'Normal' indicator on them. Is this...normal?

I made all the heads in the same way, made one half then copied flip accross to make the other side of the head.

 

Many thanks for any feedback.

 

Normy

[KenH]

You'll need to select the patches with inward facing normals and flip them by pressing the F key.

[Normy]

You'll need to select the patches with inward facing normals and flip them by pressing the F key.

 

 

Hi Kent

ok thanks for that I'll try it later, I just couldn't see any normals coming off some patches at all! Could be my eyesight.

 

 

Cheers.

 

Normy

[Normy]

You'll need to select the patches with inward facing normals and flip them by pressing the F key.

 

 

Hi Kent

ok thanks for that I'll try it later, I just couldn't see any normals coming off some patches at all! Could be my eyesight.

 

 

Cheers.

 

Normy

 

 

I cant believe I wrote kent! Sorry Ken.

 

It IS my eyesight!

 

Normy

[Julian]

ok thanks for that I'll try it later, I just couldn't see any normals coming off some patches at all! Could be my eyesight.

In shaded mode, if the normal is turned inward it looks like a tiny yellow dot.

[phatso]

Also, if the patch is very convex, it will cover an inward-pointing normal - sometimes even if the normal is pointing outward. To be sure you're seeing all the normals, put it in wireframe. Then, to avoid confusion, group-select the surfaces toward you and hide the rest.

 

Makes me sound like I know what I'm doing, doesn't it? I learned this YESTERDAY.

[phatso]

So now I go and actually try out porcelean, and boy, that one is magic! (insert "whee!" emoticon)

 

...seems to me porcelain gives you a good way to find flipped normals, even if you don't intend to keep it.

[Normy]

Yeah!!! Thanks all, I got those suckers in my sights now, I've been flipping all night!

 

Seriously, cheers for the info folks.

 

Normy