d3_react
This example shows a classic smiley face rendered as a static SVG graphic, using React to define the component structure and D3’s `arc` generator to create the mouth path. The face consists of a yellow circle with a black stroke, two eye circles positioned symmetrically, and a mouth arc drawn from the `arc()` helper with specified inner and outer radii and angular ranges. React handles the JSX elements for the SVG, while D3 computes the complex path geometry. All dimensions and offsets are hardcoded, and the graphic is centered within a 960×500 viewport.