Brush sinking - Revision history

Wormbo: fixed link

2008-12-06T23:47:07Z

fixed link

Wormbo: added DM-Gothic as UT example

2008-12-06T23:45:47Z

added DM-Gothic as UT example

Wormbo: added info about similar subtractive technique

2008-11-30T14:34:29Z

added info about similar subtractive technique

Wormbo: New page: A floor ornament in Avaris created with brush sinking. Brush sinking is a technique with BSP geometry that can be used to create a separate ...

2008-11-30T14:10:19Z

New page: A floor ornament in Avaris created with brush sinking. Brush sinking is a technique with BSP geometry that can be used to create a separate ...

New page

[[Image:brushsinking-example-avaris.jpg|thumb|A floor ornament in Avaris created with brush sinking.]]
Brush sinking is a technique with BSP geometry that can be used to create a separate section on a larger BSP surface. It is commonly used to create trim if [[static meshes]] aren't available or if the trim should not change the actual shape of the surface.

Examples of this technique can be found in all [[Unreal Engine]] generations:
* [[UT]]'s DM-Grinder uses it for some trim.
* [[UT2004]]'s CTF-Avaris has some nice nice floor ornaments created with brush sinking.
* [[UT3]]'s VCTF-Suspense uses it to apply a different texture to the middle section of the large [[brush]] forming the road.

==How to do it==
Brush sinking works on surfaces created by added or subtracted ''solid'' brushes.
#Create a new brush with the desired shape, e.g. with the [[2D Shape Editor]] or with one of the [[brush builders]]. The brush must not be a sheet, but actually have some thickness. The actual width doesn't matter, just make sure it fits into the geometry you want to sink the brush into.
#Position the [[builder brush]] ''inside'' the wall, floor, ceiling, etc., so the side with the desired shape touches the surface you want to sink the brush into. Keeping the larger brush and your detail brush snapped to the grid should greatly help in this step.
#[[Image:UT3-UnrealEd-Toolbox-Add.png]] Add the brush.
The result should look similar to the following simple example:
[[Image:brushsinking-example-simple.jpg|center|Simple brush sinking example.]]
Note that [[brush order]] plays an important role. The "sunken" brush must be ordered ''after'' the larger brush, otherwise the brush sinking will have no effect. If you perform the "Order -> To Last" command on the larger brush, you also have to perform it on the "sunken" brush.

[[Category:Mapping tutorials]]

@@ Line 4: / Line 4: @@
 Examples of this technique can be found in all [[Unreal Engine]] generations:
 * [[UT]]'s DM-Gothic uses it extensively for the carpets, DM-Grinder uses it for some trim.
-* [UT2004]]'s CTF-Avaris has some nice nice floor ornaments created with brush sinking.
+* [[UT2004]]'s CTF-Avaris has some nice nice floor ornaments created with brush sinking.
 * [[UT3]]'s VCTF-Suspense uses it to apply a different texture to the middle section of the large [[brush]] forming the road.

@@ Line 15: / Line 15: @@
 [[Image:brushsinking-example-simple.jpg|center|Simple brush sinking example.]]
 Note that [[brush order]] plays an important role. The "sunken" brush must be ordered ''after'' the larger brush, otherwise the brush sinking will have no effect. If you perform the "Order -> To Last" command on the larger brush, you also have to perform it on the "sunken" brush.
 [[Category:Mapping tutorials]]