Revisiting my classical &quot;Jumping man&quot; <a href="/plots/060">plots#060</a> with combination of Fibers exploration (<a href="/plots/112">plots#112</a>). It uses an image as a lookup for noise amplitude and reveals the shape of the Jumping man. Fountain pens. A4 on Bristol.

Noisy fibers

Sakura Gelly Roll on dark red A4 card.

Flower parametric stack

stacking multiple parametric functions with 3 stops. playing with moiré effects. STA pigment liner on A4 bristol.
<pre><code class="language-rust">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
};
</code></pre>

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