{"version":"1.0","type":"rich","title":"Fork of D3 Implementation","description":"A grid of thin horizontal and vertical rectangles covers the screen, but two circular masks reveal only the central region: one mask shows the horizontal lines, the other shows the vertical lines, creating a crosshatch pattern inside an overlapping circle. The example uses D3 v7’s `select`, `range`, and `join` to generate 100 SVG `<rect>` elements per direction, with `mask` elements and black/white filled circles controlling visibility. The full-screen SVG renders in the browser with no external data.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/aefe0164f4af4736b5c7318199ec4da6?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}