psa: be careful with clipping very round cylinders

Sergis

L666: ])oo]v[

aa

Jul 22, 2009

1,874

1,257

• Oct 6, 2014

• #1

it could double your compile times and youll never know why

heres a demonstration thatll explain errything

lets take a 32 sided cylinder

and clip it in a way that doesnt really match up with its vertices

looks fine...

...but if we zoom in...

...we see vertices going out of alignment

hello nonorthogonal visleaves hello tiny ass cuts hello long ass compile times

just cleaned up some of those in 3some and vvis time went from 2 hours to 1. on an i7 too.

caveat mappor!

 

X

xzzy

aa

Jan 30, 2010

815

531

• Oct 6, 2014

• #2

This is why you do round things with props or displacements.

Brush based games have never done curves well.

 

Izotope

Sourcerer

aa

• 
• 
• 

May 13, 2013

698

764

• Oct 6, 2014

• #3

I'm getting these flaws by just creating cylinders, I don't need to touch them :derp:

CTRL+B on selected vertices fixes it though.

 

Fruity Snacks

Creator of blackholes & memes. Destroyer of forums

aa

• 
• 

Sep 5, 2010

6,394

5,571

• Oct 6, 2014

• #4

This is caused by a rounding error when source saves .vmf. It would've helped if you didn't cut off the corners of the cylinder.

You'll want to not do that.

 

Sergis

L666: ])oo]v[

aa

Jul 22, 2009

1,874

1,257

• Oct 6, 2014

• #5

ctrl b is a good tip i didnt think of that

used to vertexdrag them one by one

 

nightwatch

aa

Sep 7, 2012

638

500

• Oct 6, 2014

• #6

Fr0Z3n said:

This is caused by a rounding error when source saves .vmf. It would've helped if you didn't cut off the corners of the cylinder.

You'll want to not do that.

Click to expand...

Silly frozen, cylinders don't have corners!

 

Muddy

Muddy

aa

• 
• 
• 

Sep 5, 2014

2,575

4,592

• Oct 6, 2014

• #7

I hate working with cylinders. More often than not I just make a square (cube) and cut the corners off. Easier to work with.

 

Pocket

Half a Lambert is better than one.

aa

• 

Nov 14, 2009

4,696

2,580

• Oct 6, 2014

• #8

Better question: Why in the universe would you ever be making cylinders and not func_detailing them?

 

• 
  6

A Boojum Snark

Toraipoddodezain Mazahabado

aa

• 

Nov 2, 2007

4,775

7,670

• Oct 8, 2014

• #9

stevethepocket said:

Better question: Why in the universe would you ever be making cylinders and not func_detailing them?

Click to expand...

When making a round structure that has an inside and should actually be visblocking. After which you place a square hint brush such that the cylinder is inscribed within it to prevent the angular portals from extending too far.

(same with the rare case when you have a solid cylinder you want to block vis and by making it a detail with a world square inside would cause a slight difference in size that allows vis-lines to see things on either side you do not desire)

edit: like this!

 

Last edited: Oct 8, 2014

wareya

L420: High Member

Jun 17, 2012

493

191

• Oct 8, 2014

• #10

did I not post in this thread already
I vividly remember doing so