This example shows a smiley face rendered as an SVG graphic using React and D3. A yellow circle with a black stroke forms the head, while two smaller black circles serve as eyes and a curved path creates the mouth. The code uses React components to structure the SVG elements and the `arc` generator from D3 to compute the mouth’s path based on specified inner and outer radii and start/end angles. All shapes are positioned relative to a central coordinate system using SVG transforms.