PlaneCurveFormulas.wl is a package for Wolfram language / Mathematica.
Parametric formulas of about 40 special plane curves. e.g.
Ellipse[e][t]
returns a parametric formula for a ellipse with eccentricity e and dummy parameter t.
It is basically a collection of parametric equations for named plane curves, so that you can type a curve by name instead of remembering its formulas.
PlaneCurveFormulas.wl is the code.
PlaneCurveFormulas_examples.nb is the documentation.
All exported symbols are fully documented. e.g. Type ?name for documentation.
Home page url: http://xahlee.info/M/plane_curve_formulas.html
This package is sponsored by Wolfram Research.