Moving on down our Toolbox, our next group of buttons are CSG Operations.
Now I already gave a really thorough example of the CSG Operations when we talked about
the brush menu, so if you'd like to jump back to that video, you can.
In short, though, these allow you to add geometry, by creating an additive brush, carve geometry
by creating a subtractive brush, to intersect the red builder brush, or de-intersect it.
So, at a glance, if we click on the Add Button, we're going to create additive geometry,
which, if I de-maximize the view port, and we take a look at this from the top view,
so there's my red builder brush. Let's go ahead and get that out of the
way. Now we can see that we have an additive brush
here, which is allowing us to have this solid geometry.
Now, I'm going to take our red builder brush, let's move back over and I'll
slide it up slightly, and now I'm going to click the Subtract Button - this creates
a Subtractive Brush, which we can also see here in the top and in the side view port,
and the result of which is that it carves away that solid geometry.
We can also Intersect or De-Intersect the red builder brush.
If I move it over here to the opposite side of our additive brush, so you can see here
in the side view how they're kind of sticking through each other.
If I click Intersect, you'll notice that we only get the result where those two brushes
are crossing into each other. If we switch back over to Cube and click De-Intersect,
we get the result of where they were touching, but not quite crossing, into each other.
So that is a really quick look at the various CSG Operations.
When you're building levels inside of Unreal Editor, you'll probably find that you're
using really primarily the Add Operation and occasionally the Subtract to carve out holes
in your additive geometry, and these are the two that you're going to find yourself
relying on most heavily. So thatĄŻll wrap things up for this video.