Curves and Arcs in Path Data wrote path data by hand; d3-shape's generators turn data into a d string for a <path> (or, given a canvas context, draw there, as in Canvas Rendering).
Curves and Arcs in Path Data wrote path data by hand; d3-shape's generators turn data into a d string for a <path> (or, given a canvas context, draw there, as in Canvas Rendering).