This example renders a smiley face as an SVG graphic using React and D3.js v7. The yellow circle head, black outlined, contains two eye circles and a nose path formed with D3’s symbol triangle, while the mouth is drawn via D3’s arc generator with specified inner and outer radii and angular spans. The component computes all positions and dimensions from central coordinates, using D3’s arc and symbol APIs to construct paths, with React managing the SVG output.