"In summer of 2020 I bought a plotter, a robot drawing machine that holds a pen. It is only capable of drawing lines, and nothing else.
Because of this I had been focusing on vector based SVG outputs. This is a file format particularly suited for the plotter, which builds images as a collection of lines and shapes, instead of pixels, like a JPEG does.
However, I felt the urge to play and experiment with 3D SDFs and raymarching again. An SDF is a mathematical function that describes shapes, in a way that is particularly suited to raymarching. Raymarching is a technique used for raytracing, which is a technique to simulate light bouncing off these 3D shapes, resulting in a picture. Unfortunately, these techniques are mostly aimed at pixel-based rendering, so I had to get clever.
In these first two pieces I use a raster-based scribbling approach to generate scribbles of varying size, creating varying levels of brightness." - Piter Pasma