Function CardinalOpen

docs/app/js/sanddance-app.js:126022–126025

(context, tension)

parcelHelpers.export(exports, "CardinalOpen", ()=>CardinalOpen);
var _cardinalJs = require("./cardinal.js");
function CardinalOpen(context, tension) {
    this._context = context;
    this._k = (1 - tension) / 6;
}
CardinalOpen.prototype = {
    areaStart: function() {
        this._line = 0;