{"version":"1.0","type":"rich","title":"Canvas, Lots of Transitions","description":"A grid of 19,200 small rectangles fills the canvas, each transitioning from steelblue to lightgreen while moving from the top-left corner to the bottom-right. The animation uses d3.v4 transitions with staggered delays based on each cell’s grid position. Rendering is handled by Canvas 2D API calls within a `requestAnimationFrame` loop, while a detached custom D3 selection manages the rectangle attributes without creating DOM elements.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-31088324b5fafe72b3059e8700c19b8b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}