Zdog
Flat, round, designer-friendly pseudo-3D engine for canvas & SVG
...All circular shapes are rendered as proper circles with rounded edges. No polygonal jaggies. Zdog is friendly. Modeling is done with a straight-forward declarative API. Zdog was designed to bring the simplicity of vector illustration into 3D. Drawing circles and squares is easy and fun. Zdog just adds another dimension. It renders all shapes using 2D drawing API in <canvas> or <svg>. Spheres are actually dots. Toruses are actually circles . Capsules are actually thick lines. It’s a simple, but effective trick. The underlying 3D math comes from Rotating 3D Shapes by Peter Collingridge.