Creating Auto-randomized Signs/Neon/Such! (getting random)
🕑 Added 2021-11-16 08:46:29 +0000 UTCSo- I've touched on a few of these techniques in the past, but this goes more in depth, and a few techniques are significantly more straightforward (and *powerful*!?) My previous method is frankly a tad embarrassing in retrospect (as will be all future previous methods!)
Below's the cheat-sheet for how to set up a "randomized selection from a grid of something". In the Math nodes (currently set to "snap"), you just type in "1/X" (where "X" is however many rows/columns you have on that axis), and it results in the decimal you need- it makes a lot more sense in the video.
Some may be wondering why I used 1D white noise instead of the 4D (which includes an additional "W" slider)- and it's just because as far as I know 1D is pretty darn lightweight computationally, and 4D is many times heavier while giving the same result.

Also- I just put it together as a quick-n-dirty demonstration, but if anyone wants the storefront from the ending of the video to use in anything, here's the blend file! It's got the scrolling sign and a couple other randomizing things in there. 

Comments
Sascha Rossier
freaking genius .... dope3000!
Rajarajan Manoharan
This tutorial got better and better the more I watched it.
TheOddGuy ._.
moss
I was gonna say something but then I remembered this is Ian's tutorial so I let it go lol
the butt cube just sat there, no comment at all. dead.
It's the greatest thing I have ever scene how easily we can randomize stuff with these, it gives us many possibilities, what if we can generate randow store with randow shape also with a shape keys as you did the cars.
Ry Ken
wow
kinda looks like Amharic letters
Brent Holzheimer
This was awesome!, this totally changes how I do textures in Substance Designer. For instance, If I make a concrete texture and have it scaled right you can get so much more use out of textures. Thank you Ian!
Urban Exile
One other suggestion for truly random emission colors across the entire spectrum -- plug your random [0,1] value into the Hue input of a "Combine HSV" node, set Saturation and Value to "1", and the node output is a fully saturated/fully bright random color.
Carson Reader
Instead of the color ramp to select the random colors, you could probably also plug three separate random nodes into a combine RGB node and then plug that into the color! Only if you want it to be literally any color though
Arsh Waseem
definitely would love the hair tutorial because blender hair makes me pull out my irl hair
worked perfectly! To anyone else doing this, heads up that it only works in Cycles, so material preview will look borked
Ian Hubert
Ooo- there's "Per Island" (in the "Geometry" node), which gives a different ID to each disparate "mesh chunk" in the object. If you multiply that by the object ID, that might give you what you're looking for?
I'm using this technique to randomize uv offset on a texture atlas for small "filler" buildings (mostly different sized cubes), and it works great, but Blender balks when you have thousands of individual elements, and obviously this approach breaks when you group them to improve performance. I've been poking around, but cant find another ID in the nodes. Is there another unique ID for faces? Or am I going down the wrong path? Can I "Bake" the resulting UV positions? Can I borrow 20 bucks?
ian is this beautiful butt-cube available for download?
Hey, how would you do stuck or dead pixels? I’ve seen those on that type of signs all the time.
Frank Frohnhoefer
Ridiculous good tutorial. Signs-Science at it s best!
Nicholas Cummins
I’d love to see how you make larger terrain shots. Just the backgrounds or when your high up. Quick and dirty landscapes
Pablo Nicolas
Awesome as always! Thank you! Another neat way of creating many random values from just one Random input is to multiply it by different numbers and clamping the result to 0/1 using fraction. It's easy to visualize how it works using 10, 100, 1000, etc. as a multipiers. You shift the result left, and ignore the nondecimal part. But it works flawlessly with smaller increments like 10, 20, 30 etc. https://ibb.co/9sHZf7M I made it into a node group that spits 10 random outputs just in case :-) All your tuts are a treat! Thanks again!
ash katchum
Have you gone over your photo rig yet? I would love to see a video on that. Love your patreon Sessions!
Shawn Hawkinson
Ian! Speaking of store fronts… when are you going to make a “Gombo” stand? 🤣
Ian, I’m sure this is the wrong place do this, but is there a good contact for you for work? Tried the myriad of social inboxes so far…
The cube has an ass, obviously because it's superior to the default cube.
This is amazing learning so much. Working on my first short fil for my university final project and these tutorials have been a godsend. Thank you Ian.
Pete Burges
This is terrific. I got excited recently about an addon I saw on BlenderMarket which looked like it did this, but it didn't, so I am really glad you made this thing! PS why did the cube have an arse? This is the audience asking a question...
Armando Marchetti
great stuff as always, Ian! I've learned so much since I joined your Patreon!
Tolga Katas
thank you, this was good!
Lonnon Foster
Ian Hubert, doing something random? Seems so out of character.
Gabrial Wolf
A Christmas sweater in November ?
Dannysh Rosli
hey IAN ! You should come to the city Melaka in Malaysia. You can ride on that thing for real ! ILL BE YOUR GUIDE ! !!
Paul McBryde
This is cool and nuts (coolnuts) I've always wanted to create a scene where I can explore and be surprised because I haven't had to hand make each and every sign etc. Thanks dude!!
tutorials cant get any better
Jostein Lie Svalheim
Ian: "Don't answer questions the audience haven't asked yet"
Zeke Faust
Love getting a sneak listen of the Soren track in the beginning!!
Mahdi Poursamad
Nobody going to talk about the default cube with a dumpy of an arse?
Jostein Lie Svalheim
In Europe, your vids often drop in the morning, so you and me get to have morning coffee together, Ian.
you absolute goddess
Dawson Henderson
wow, that thumbnail is looks amazing, love the neon!