frontend/osu/js/curves/LinearBezier.js

define(["underscore", "curves/EqualDistanceMultiCurve", "curves/Bezier2"],
    function (_, EqualDistanceMultiCurve, Bezier2) {
        // Adapted from LinearBezier.java from github://itdelatrisu/opsu
        function LinearBeizer(hit, line) {
            EqualDistanceMultiCurve.call(this, hit);

            var beziers = [];

            var controlPoints = hit.keyframes.length + 1;
            var points = [];
            var lastPoi = null;
            for (var i = -1; i < hit.keyframes.length; i++) { // NOTE: This was +1 earlier?
                var tpoi;
                if (i !== -1) {
                    tpoi = hit.keyframes[i];
                } else {
                    tpoi = {
                        x: hit.x,
                        y: hit.y
                    };
                }
                if (line) {
                    if (lastPoi !== null) {
                        points.push(tpoi);
                        beziers.push(new Bezier2(points));
                        points.splice(0);
                    }
                } else if (lastPoi !== null && tpoi.x == lastPoi.x && tpoi.y == lastPoi.y) {
                    if (points.length >= 2) {
                        beziers.push(new Bezier2(points));
                    }
                    points.splice(0);
                }
                points.push(tpoi);
                lastPoi = tpoi;
            }
            if (line || points.length < 2) {
                // ignored
            } else {
                beziers.push(new Bezier2(points));
                points.splice(0); // neccessary?
            }
            this.init(beziers);
        }
        _.extend(LinearBeizer.prototype, EqualDistanceMultiCurve.prototype);
        return LinearBeizer;
    });