# greweb.me / Plots / 122 "Growing parametric splitted"

Sourcecode
122/main.rs
Tags
parametric

stacking multiple parametric functions with 3 stops. playing with moiré effects. STA pigment liner on A4 bristol.

``````let size = 90.;
let f1 = (8., 8.);
let f2 = (5., 40.);
let amp1 = 1.0;
let amp2 = 0.05;
let samples = 100000;
let spins = 200.0;
let splits = 4.0;

let parametric = |p: f64| {
let p1 = (splits * p).floor();
let p2 = splits * p - p1;
let t = (p1 + 0.8 * p2) / splits;
let scale = 1.0 - t;
let mut p = (
scale
* amp1
* ((spins * 2. * PI * t).cos()
+ amp2
* mix(
(spins * f1.0 * PI * t).cos(),
(spins * f2.0 * PI * t).cos(),
t,
)),
scale
* amp1
* ((spins * 2. * PI * t).sin()
+ amp2
* mix(
(spins * f1.1 * PI * t).sin(),
(spins * f2.1 * PI * t).sin(),
t,
)),
);
let noise_angle = 2.
* PI
* perlin.get([
0.02 * p.0,
0.02 * p.1,
100.0 + opts.seed,
]);
let noise_amp = 0.1
* perlin.get([
0.01 * p.0,
0.01 * p.1,
opts.seed,
]);
p.0 += noise_amp * noise_angle.cos();
p.1 += noise_amp * noise_angle.sin();
p
};
``````
As a generative plotter artist, I use code to generate art (creative coding) and physically create it with pen plotters, which is itself a generative process – each physical plot is a unique variant. I love dualities, like digital vs analog physical, abstract vs figurative, orthogonal vs polar, photo vs noise,...