{"version":"1.0","type":"rich","title":"Full MaskTest 1","description":"This example demonstrates a mask-based visual effect that combines two sets of overlapping SVG rectangles, creating a crosshatch pattern of thin horizontal and vertical lines. The full viewport is covered by 100 horizontal and 100 vertical strips, each partially revealed through circular mask regions defined using D3’s `symbol` API. Two masks are layered: the first shows a white circle against a black background, while the second inverts the circle’s role, allowing the rectangles to appear only outside the central circular area. The rendering uses D3 version 6.6.1 with SVG output.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4be1c6b207a2415da92ca556afb6a3f4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}