@osbjs/osbjs/dist/Beatmap/Curves/BezierCurveGroup.js

a minimalist osu! storyboarding framework

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.BezierCurveGroup = void 0;
const Curve_1 = require("./Curve");
class BezierCurveGroup extends Curve_1.Curve {
    constructor(curves) {
        super();
        this.curves = curves;
        this.startPosition = curves[0].startPosition;
        this.endPosition = curves[curves.length - 1].endPosition;
        this.length = this._initLength();
    }
    _initLength() {
        let length = 0;
        this.curves.forEach((c) => {
            length += c.length;
        });
        return length;
    }
    getPositionAtDistance(distance) {
        for (const curve of this.curves) {
            if (distance < curve.length)
                return curve.getPositionAtDistance(distance);
            distance -= curve.length;
        }
        return this.curves[this.curves.length - 1].endPosition;
    }
    getPositionAtDelta(delta) {
        let length = this.length;
        let d = delta;
        for (let curveIndex = 0; curveIndex < this.curves.length; ++curveIndex) {
            let curve = this.curves[curveIndex];
            let curveDelta = curve.length / length;
            if (d < curveDelta)
                return curve.getPositionAtDelta(d / curveDelta);
            d -= curveDelta;
        }
        return this.endPosition;
    }
}
exports.BezierCurveGroup = BezierCurveGroup;