Phacelle - Cheap Directional Noise

While working on a novel erosion algorithm last fall (which I'll release at a later time), I developed a directional noise function in the process, which combines various traits of other ones. Since I haven't come across one quite like this, I'll share my findings here. I call it Phacelle Noise, a portmanteau of phase and cell. Update: After discussing with two of the authors of Phasor Noise, I've…