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Why no CSG Subtracting?


teutonicknight

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If you ever try to use CSG subtract, you'll see it makes an ABSOLUTE BALLSUP of cutting up the object!!!

While it does make a hole, all the brushes making up the hole overlap horribly, which in-game causes a lot of graphical anomalies which are just plain unprofessional.

Also it takes so much time to rectify the problem afterwards, you're better of just building the thing properly from scratch.

 

Note: It is possible to create a single window in a patch curve - if you need a hole in a curved surface.

 

Monsoontide.

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From my experience, anything that isn't square and at a 90 degree angle will cause problems! Just try making a hollow tube with CSG subtract! Ugh!

(Yes you can make one with a curve, but for certain situations it just isn't practical.)

 

Radiant tends to hate anything that isn't a big square block. Sigh!

That doesn't mean you can't be very creative in solving such problwms and finding work arounds.

 

Monsoontide

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Note that csg substract does not cut your brushes in the most optimal way. If you are creating a window in a brush, you will get a structure like this :

____________

|___________|

| |..............| |

| |..............| |

|_|________|_|

|___________|

 

while the optimal window would be

 

____________

|\ _________/ |

| |...............| |

| |...............| |

| |________ | |

|/_________ \|

 

not that good asci, but I think you'll get what I mean.

the second window has less T-junctions => better performance

 

PS : the points in the asci can be ignored, it was just to make it look right :)

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