html2canvas-pro
Version:
Screenshots with JavaScript. Next generation!
35 lines • 1.5 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isBezierCurve = exports.BezierCurve = void 0;
const vector_1 = require("./vector");
const lerp = (a, b, t) => {
return new vector_1.Vector(a.x + (b.x - a.x) * t, a.y + (b.y - a.y) * t);
};
class BezierCurve {
constructor(start, startControl, endControl, end) {
this.type = 1 /* PathType.BEZIER_CURVE */;
this.start = start;
this.startControl = startControl;
this.endControl = endControl;
this.end = end;
}
subdivide(t, firstHalf) {
const ab = lerp(this.start, this.startControl, t);
const bc = lerp(this.startControl, this.endControl, t);
const cd = lerp(this.endControl, this.end, t);
const abbc = lerp(ab, bc, t);
const bccd = lerp(bc, cd, t);
const dest = lerp(abbc, bccd, t);
return firstHalf ? new BezierCurve(this.start, ab, abbc, dest) : new BezierCurve(dest, bccd, cd, this.end);
}
add(deltaX, deltaY) {
return new BezierCurve(this.start.add(deltaX, deltaY), this.startControl.add(deltaX, deltaY), this.endControl.add(deltaX, deltaY), this.end.add(deltaX, deltaY));
}
reverse() {
return new BezierCurve(this.end, this.endControl, this.startControl, this.start);
}
}
exports.BezierCurve = BezierCurve;
const isBezierCurve = (path) => path.type === 1 /* PathType.BEZIER_CURVE */;
exports.isBezierCurve = isBezierCurve;
//# sourceMappingURL=bezier-curve.js.map