Visage Souriant avec React et D3
This example depicts a stylized smiling face built entirely with SVG elements. Using React components for structure and D3’s `arc()` generator for the mouth curve, it renders a gradient-filled elliptical head, two white eyes with crimson-ringed irises, and a rounded smile. The face is centered via SVG transforms, with fixed dimensions (960×500) and hand-coded constants for radii and offsets. D3 v7 supplies the arc path, while React 16.7 manages the declarative SVG tree. The visualization demonstrates how geometric primitives and math-based path generation combine into a playful, static composition.