Continuation of <a href="/plots/113">plot#113</a> with different parametric functions.
<ul>
<li>Sakura Gelly Roll white on black. (clairefontaine 210g)</li>
<li>STA pigment liner 0.05mm on white. (canson bristol A4)</li>
</ul>
The black plot have an interesting precision which makes it smooth from a far look but the details of this plot are interesting as well. I&#39;m not yet sure what creates the vertical line glitch we see on both plots, is it the paper? is it my robot? It is part of the art now.

concentric parametric flowers

Another exploration of <a href="/plots/112">plots#112</a>, more delicate than <a href="/plots/115">plots#115</a>, with a centered noise of fibers. It uses two fountain pen inks for different color tones (Aurora Borealis and Writer&#39;s Blood from Diamine). I could try with even more lines in future but these are already almost 2 hours of plotting time! A4 on Bristol.

Exploration of fibers with a centered noise. two color tones.

Noisy fibers

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.