Thing is, in many situations it's useful to see the back vertices too. I'll add this as a feature request. 

but as you can see in instances where you are editing terrain/rock I think it's best that all the back faces are actually flush. I really believe this is why I was getting bsp holes and HOM problems, I'm trying not to touch the back faces this time. 

yeah i did think that when watching daz's video. it is useful to see them sometimes but i imagine some kind of toggle would be handy 

would it be doable to add Blender-style Extrude and Loop Cut tools to a brush based map editor?

I was using Blender a lot recently and I thought, gosh, if I had this in a map editor... it would accelerate the workflow a lot. 

If somebody ever invents that fabled "take my model file and break it down into convex chunks automatically" routine I would live in Modo for Quake mapping. Would be spectacular... 

that would be even better, yeah. Extrude and loop cut might be doable though, although any shape that resulted in an invalid brush would have to be split off at the new edge loop automatically...

Alternatively, one could make q3map2 spit out Quake 1 BSP files, so we could map in a modeling suite and just assemble the map from static meshes... just need a compiler that bakes static meshes into the BSP. 

As I said, I have opened a feature request for this. 

I don't know what these features do. Can you show me? 

The trouble is both edge loops and extrudes are going to be problematic in TB since it optimizes the brush into planes after each operation. So you'll insert the loop and TB will optimize it away immediately afterwards. :P I think, anyway... 

Yeah I know, I was just theorising out loud as to why my terrain may have caused holes before. The way I have done the terrain still isn't perfect though. 

Loop cut adds an edge loop, which creates new polygons. It is very useful to create subdivisions in a mesh where you want them, to give you new geometry to sculpt. Like this:

http://www.youtube.com/watch?v=a4U-gvw2E4w

Note how the cut is semi-intelligent - you move it around the mesh and it shows you where it *would* make the cut if you were to apply it now.

You can easily place a lot of new verts / faces into your mesh with this tool and then extrude the new faces etc.

Extrude basically duplicates a face and allows you to "pull it out" of the mesh, adding geometry to that area of the mesh.

http://www.youtube.com/watch?v=RLSiHd9f1PA 

actually, extrude doesn't duplicate the extruded face - brainfart on my part. It creates new faces when the extruded face is pulled out. 

Ok I'll not this for a later release. 

It's got a certain poetic, romantic flavour. Most exquisite rhyming couplet... (sips tea) 

I'm getting same problem as FifthElephant, on a different box.

This file is missing, and says to try re-installing the program--even though it was never installed to begin with; it was extracted from a zip.

I'm on windows7 x64.

I installed the vcredist_x64.exe, but I still get this error message.

using nvidia geforce gts450, latest drivers.

there is TrenchBroom.log file, but it was not updated with any information for today, probably because the program doesn't even have a chance to open up, because i immediately get this windows prompt window error message of this missing dll file. 

So maybe you need to install a 32bit version of the redistributable? 

edgeloop = clip tool
and since brushes are convex volumnes defined by planes, you wont ever have ability to freely create new edges like in polygonal modelling

extrude = clone+drag for planar faces

for non-planar its not that simple
and actually this could be doable new editor feature: draw new brush based on a selected face and normal 

which could be a very feature useful to have.

eg. boxing out rooms and the using the clip tool to cut out the doors. Just do 3 quick splits and remove the unwanted brush. Do another split above the door for instant trim... Could allow for speedy mapping in combination with csg-hollow.

Implementation could be hitting shift+return instead of just return. Or something among those lines. 

Okay, tab works like magic. Lol.
Think I'm gonna use that a lot.

/noob 

I don't remember getting that error, mine has been working for a month. I do remember that I had to update my graphics card drivers to the latest version to solve the problem I had. (I was using a fresh out-the-box install of Windows 8) 

Isn't this what you mean: https://github.com/kduske/TrenchBroom/issues/418 

Yeah, FifthElephant, it was one of the first 25 posts of this thread. Google remembers.

SleepwalkR, yah, vcredist_x86.exe works now.

Spiney, now I know you didn't watch my trenchbroom video on clip. :)

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Extrude could be powerful, and therefore seems worth it for the programmer to make it. However, I disagree with edge loop.

EdgeLoop though seems like a feature for lazy people that couldn't just simply just press C and clip several times, therefore wouldn't be worth it to the programmer to make this.

Also, it's probably not often you'd use this feature anyways.

But since Clip already exists, then I suppose it would be somewhat easy for the programmer to take that and make an EdgeLooping function. 

Edgeloops don't split the brush - they add an edge loop. Don't call people lazy when you don't even understand what's being proposed. 

What exactly is it? Is there a video somewhere? 

This covers the Max version pretty well:

https://www.youtube.com/watch?v=3rJdMLmQRiE

It's a standard modeling tool. I'm not saying it's something that TB needs but I took issue with it being called the same thing as a clip. It isn't. :)