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Tetrahedron Rock Formations - A Tutorial for Counter-Strike 1.6

How to make realistic terrain using tetrahedron-shaped brushes

Hokay so I was bored the other day and so I decided to make this little diddy on how to create realistic-looking rocks in Hammer using a method called the Tetrahedron Method. So in this tutorial we will try to learn two things: 1. How to make a tetrahedron brush and fit them together 2. How to manipulate them into your rock formations Let's get this show on the road! For the purposes of understanding this tutorial, try to orient your Hammer grid the same way that I have it in the pictures! Also my grid size is set to 16 units! I will notify if/when changes to that occur. First and foremost, make a brush that is square (i.e. 64 x 64, 128 x 128, etc). We will be using 64x64 in this tutorial. -------------------------------------------------------------------------------------- Simple enough right? Next you're gonna want to select any 2 corner vertices (top and bottom) -------------------------------------------------------------------------------------- Highlight and drag them over to the set of vertices next to them and hit YES when it prompts you to merge. -------------------------------------------------------------------------------------- Now you highlight any TWO (2) of the remaining bottom vertices, like you see in the picture: -------------------------------------------------------------------------------------- Take those 2 vertices and nudge them UP and MERGE them with the vertices directly above them. -------------------------------------------------------------------------------------- Select the bottom vertex highlighted in this picture: -------------------------------------------------------------------------------------- Take that vertex and move it (in our case) OVER 3 grid blocks and DOWN 1 grid block so it looks like this: -------------------------------------------------------------------------------------- Congrats! You now have a tetrahedron, the simplest polygon you can make in Hammer! -------------------------------------------------------------------------------------- Now you must copy the T (I don't feel like spelling the whole thing out so tetrahedron will now be T :P ) and turn it 180 degrees like so: -------------------------------------------------------------------------------------- Fit them together -------------------------------------------------------------------------------------- Copy your fitted Ts and paste them as many times as you see fit (and it doesn't have to be in a square like mine are). -------------------------------------------------------------------------------------- One thing I find helpful is highlight a chunk of Ts and group them so you don't have to constantly keep highlighting them individually. -------------------------------------------------------------------------------------- The vertices highlighted in the picture below are the vertices that you will be manipulating.DO NOT MOVE THE VERTEX THAT WE MOVED TO THE MIDDLE OF THE TETRAHEDRON! This will almost surely give you errors everytime. -------------------------------------------------------------------------------------- When you raise one of the highlighted vertices (4 different vertices in all [1 corner vertex from each T]), it will look like this: -------------------------------------------------------------------------------------- Here is where your own creativity comes into play. Simply move the vertices around VERTICALLY and create your own rocky terrain! Mine is very crude so be sure to lower your grid units to fine tune! -------------------------------------------------------------------------------------- Give that baby some appropriate textures! Be sure to tick the "world" check box in your texture application box before aligning your textures (so they are seamless) -------------------------------------------------------------------------------------- And there you have it! Yummy rocks in Hammer! This method leaves room for improvement but for now, just focus on getting the general concept down before optimizing. (many of the brushes here can be combined using ADVANCED VERTEX MANIPULATION, but we'll leave that for another time) Happy Vertexing! Example .rmf (includes the rock formation in the Preview Picture as well as the rocks created in the actual tutorial) [Example RMF](http://www.sendspace.com/file/n0hwwz "Example RMF") The rocks that are encased in the big box are OPTIMIZED. The "free floating" brushes are NOT OPTIMIZED
  • Akshit Saklani avatar
    Akshit Saklani Joined 9y ago
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    7y
    The link of the example file in the tutorial doesn't work anymore. Here's another link if someone needs an RMF file.
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    Mantra
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  • Thanks for sharing this...
    -=_p`[B]_=- Den$ity
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    timmycakes Joined 13y ago
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    9y
    > **Posted by NaitsirK** > Hehe, nice tutorial mate, this gives me an idea to post my own on how to make realistic mountains and hills, but with my own technique, because using tetraheadrons makes a jungle in VHE, many people get lost in all the verticies, and the compile time is much longer. > > But for making realistic rocks, this works like a charm. > > Nice of u to share this with us :) yeah im sure there are cleaner ways to do it, but like I said at the very end, there ARE ways to optimize and clean up the mess. if you look at the RMF i provided, you can see an example of that. glad u can find use for it though!
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    9y
    Hehe, nice tutorial mate, this gives me an idea to post my own on how to make realistic mountains and hills, but with my own technique, because using tetraheadrons makes a jungle in VHE, many people get lost in all the verticies, and the compile time is much longer. But for making realistic rocks, this works like a charm. Nice of u to share this with us :)
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    Mantra
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    timmycakes Joined 13y ago
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    9y
    oh i can include an .rmf sure! good idea actually
    Bananite
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    9y
    Hey mate thanks for sharing this technique of making uneven surfaces.

    I lost myself at selecting individual vertices. Can you possibly make a video tutorial or an example rmf for this tutorial.
    Thanks.

    Edit:
    I finally found that selecting all the T's(hee hee) and going into vertex manipulation mode and dragging a square over the group of vertices you want to select and pressing enter will group them all together.
    Still, thanks for the great tut.
    • Thanks x 1
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    Mantra
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