Exploration of perlin noise triangle planets. various fountain pen on A4 bristol.
These are taking almost one hour to plot, with 2 passes of 2 different spirals. Each spiral varies a bit with different offset and displacement noise which creates a desired effect of bolder areas, caveats and craters.
The displacement noise is a simple perlin noise, only one harmony is used but the noise is split into two 2 different perlin noises: the angle noise (like a vector field, different angle of displacement) and the amplitude noise (how much does the displacement move the point).
The triangle is made with a parametric function, reusing technique explored on <a href="/plots/114">plot#114</a>.
There is an important effort on finding a good balance between noise and distribution of lines (it&#39;s not linear, it&#39;s closer on edges).

Exploration of perlin noise triangle planets. various fountain pen on A4 bristol.

Triangle planet

This is a continuation of exploration started at <a href="/plots/112">plot#112</a>.
Had a great try of ink &quot;Amber&quot; by Diamine. Fountain pens on A4 bristol card.

Yellow fibers

Another parametric functions. Inspired from <a href="/plots/111">plot#111</a> idea: stacking multiple parametric functions. The parametric used is
<pre><code class="language-rust">let parametric = |t, p| {
 (
 (0.2 + 0.7 * p) * (2. * PI * t).sin()
 + 0.1 * (14. * PI * t).sin(),
 (0.2 + 0.8 * p) * (2. * PI * t).cos()
 + 0.2 * (20. * PI * t).cos(),
 )
};
</code></pre>
Sakura Gelly Roll on black A4, revealing artifacts of the paper.

stacking multiple parametric functions. Sakura Gelly Roll on black A4, revealing artifacts of the paper.