This example is a generative art piece that reproduces a Sol LeWitt-style drawing, featuring a circular grid of horizontal and vertical lines. The visualization uses SVG elements created programmatically with vanilla JavaScript, without any external libraries. A circular mask, defined via the SVG `mask` element, is applied to the horizontal lines so that they only appear inside the circle, while the vertical lines span the full canvas. The code calculates the viewport dimensions from `window.innerWidth` and `window.innerHeight` to generate 100 of each line type, creating a minimalist geometric pattern.