Fork of Smiley Face
This example shows a simple smiley face constructed from SVG shapes: a yellow circle for the head, two black circles for eyes, and an arc for the mouth, all centered on a 960x500 canvas. The visualization is built with React and D3 v6, using the `arc` generator from `d3-shape` to create the mouth path. SVG circles are positioned with explicit coordinates and transforms, while the mouth arc is defined by inner and outer radii with start and end angles. The code renders directly to SVG elements within a React component.