| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | exports.isBezierCurve = exports.BezierCurve = void 0;
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| 4 | var vector_1 = require("./vector");
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| 5 | var lerp = function (a, b, t) {
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| 6 | return new vector_1.Vector(a.x + (b.x - a.x) * t, a.y + (b.y - a.y) * t);
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| 7 | };
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| 8 | var BezierCurve = /** @class */ (function () {
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| 9 | function BezierCurve(start, startControl, endControl, end) {
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| 10 | this.type = 1 /* BEZIER_CURVE */;
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| 11 | this.start = start;
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| 12 | this.startControl = startControl;
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| 13 | this.endControl = endControl;
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| 14 | this.end = end;
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| 15 | }
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| 16 | BezierCurve.prototype.subdivide = function (t, firstHalf) {
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| 17 | var ab = lerp(this.start, this.startControl, t);
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| 18 | var bc = lerp(this.startControl, this.endControl, t);
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| 19 | var cd = lerp(this.endControl, this.end, t);
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| 20 | var abbc = lerp(ab, bc, t);
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| 21 | var bccd = lerp(bc, cd, t);
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| 22 | var dest = lerp(abbc, bccd, t);
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| 23 | return firstHalf ? new BezierCurve(this.start, ab, abbc, dest) : new BezierCurve(dest, bccd, cd, this.end);
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| 24 | };
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| 25 | BezierCurve.prototype.add = function (deltaX, deltaY) {
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| 26 | return new BezierCurve(this.start.add(deltaX, deltaY), this.startControl.add(deltaX, deltaY), this.endControl.add(deltaX, deltaY), this.end.add(deltaX, deltaY));
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| 27 | };
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| 28 | BezierCurve.prototype.reverse = function () {
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| 29 | return new BezierCurve(this.end, this.endControl, this.startControl, this.start);
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| 30 | };
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| 31 | return BezierCurve;
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| 32 | }());
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| 33 | exports.BezierCurve = BezierCurve;
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| 34 | var isBezierCurve = function (path) { return path.type === 1 /* BEZIER_CURVE */; };
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| 35 | exports.isBezierCurve = isBezierCurve;
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| 36 | //# sourceMappingURL=bezier-curve.js.map |
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