{"version":"1.0","type":"rich","title":"MaskTest","description":"This example demonstrates how SVG masks can create intersecting geometric patterns. Two sets of thin, full-length rectangles—horizontal and vertical—are drawn across the entire viewport using d3.range and d3.selectAll. Each set applies a different circular mask: one reveals a white circle against a black background, while the other inverts the mask, hiding the circle. The result is a crosshatched grid with a central circular region where the two masked layers visibly interact. The code uses D3 v6 selections and the SVG `<mask>` element.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/ce57b037aa0e4e9cba7412066144e684?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}