{"version":"1.0","type":"rich","title":"SVG + D3","description":"A full-screen SVG pattern of 100 horizontal and vertical bars alternates in opacity according to two circular masks, revealing a central disc and its inverse. Using D3 v7, the code appends `rect` elements via `selectAll().data().join()`, sizing them by window dimensions. The masks are defined in SVG by combining a background `rect` with a `circle`, where white reveals and black conceals.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/dfda57d6c30b4b5fa96c73016fd5f85c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}