Thursday, November 17, 2011

Texturing with Fractal Maps

I am excited to be visiting House of Moves tomorrow! Anyways, on to the Chromakinetics update:



As you can see, the film’s set dressing is almost done. Once I choose an HDRI to work with, I will add some details (Graffiti, telephone poles, pipes, grating, and maybe a…pile of trash or a cat or something?)

However, that’s not what this post is about. No. This post is about something very special to me.

CUSTOM SHADER NETWORKS.

or,

How I Learned to Stop Single Image Mapping and Love Procedurally Generated Blending.



Here is a render from this morning. As you can see, the canal’s concrete looks brand-spanking new. I had to come up with a solution to “grunge” it up a bit. After doing some research, I decided that the best way to do that would be through stuffing the corners with moss and adding streaks of grime along the sides of the walls.

The first thing I did was visit CG Textures and I found a good, mossy canal texture. The only problem is that it turned out looking like this:



The texture repeats itself over and over and over again. It looks jarring, as the human eye can pick up unnatural patterns pretty easily. No bueno.



So to fix this I gathered a bunch of other mossy canal textures and built a layered texture out of them. Then, I attached fractal maps to their transparency so that their appearance would be driven procedurally. Check out my shader network:



Note: All the nodes feed into the layeredTexture node. I just arranged this way to save space.

Note #2: This is a very, very simple shader network. Some shaders done professionally are hundreds (and sometimes thousands) of nodes long.



Phew! I am happy this method worked! As you can see, I added some subtle streaks of grime to the sides as well. Another layer or two of detail and these walls are ready for some graffiti.

Two more shots of the how the city looks so far below:



Wednesday, November 9, 2011

Chromakinetics

This is an animated short I am working on about a graffiti artist who can telekinetically control and throw globs of paint. It will have a techno-urban feel to it inspired by, (to name a few) Sticker Bomb and Jet Set Radio.

Here’s the main character. He’s wearing a face mask (with oni decal) and goggles.

Character Concept Art
I modeled him in Maya (about 2.5 hours). Some liberties were taken with his stylized look.

Model
I think I will make his mask more “pop cartoon” because its detail is a bit uncanny at the moment.

Chromanaut Character Render

His animation will be powered via motion capture (Vicon Blade and Motionbuilder). The paint itself will be animated using fluid dynamics, fields, and sticky maps.

My goal is to get the effects animation looking similar to the beautifully animated waterbending from Avatar, except with more viscosity (because paint is, you know, thicker).

Environment

The animation takes place in a drained flood control channel in the middle of an overdeveloped city. I spent one afternoon extruding buildings and trying to breathe life into the world.

I really love doing this stuff. Yes, I almost became an architect once.


The set is basically a big, graffiti filled t-junction with ends that curve off to the sides.


A big inspiration for the look of the city is illustrator Matt Laskowski. I absolutely admire Matt’s work!



Anyways, I will be texturing the entire city using tri-planar projection mapping this weekend. Wish me luck!