Smiley Face
This example demonstrates how to construct a smiley face using SVG primitives and React, rendering a yellow face with eyes, glasses, a smile, and a nose. The face is built with circles, rectangular elements, and arc-based paths. The code leverages the D3 arc generator (d3.arc) to compute the paths for the smile, glasses, and nose, while React components manage the SVG structure and positioning. It uses React 17 and D3 v7, with all dimensions and offsets defined as variables to control the layout.