Inside a circular lens, Sol LeWitt's intersecting horizontal and vertical line grids are recreated using D3 v7 selections and data joins. The example uses two SVG masks, each with a white circle on a black rectangle, to reveal the striated patterns over a full-screen canvas. By generating 100 rects per axis from `d3.range`, the code alternates mask fill colors to create a crosshatched, optical illusion of depth and layering.