This example transforms the classic Smiley Face Part II into a pig face using React and D3 v5. It shows a circular face with two eyes, a large pink elliptical snout, and two small nostril ellipses, all rendered as SVG elements. The code adjusts the mouth size and position using a D3 arc generator, while nose and face colors are customized with pink tones. The visualization uses React to manage the component structure and D3’s `arc` API to draw the mouth curve, with SVG shapes for the eyes, snout, and nostrils.