@tldraw/editor
Version:
A tiny little drawing app (editor).
53 lines (52 loc) • 1.57 kB
JavaScript
import { Vec } from "../Vec.mjs";
import { linesIntersect } from "../intersect.mjs";
import { Geometry2d } from "./Geometry2d.mjs";
class Edge2d extends Geometry2d {
start;
end;
d;
u;
ul;
constructor(config) {
super({ ...config, isClosed: false, isFilled: false });
const { start, end } = config;
this.start = start;
this.end = end;
this.d = start.clone().sub(end);
this.u = this.d.clone().uni();
this.ul = this.u.len();
}
getLength() {
return this.d.len();
}
midPoint() {
return this.start.lrp(this.end, 0.5);
}
getVertices() {
return [this.start, this.end];
}
nearestPoint(point) {
const { start, end, d, u, ul: l } = this;
if (d.len() === 0) return start;
if (l === 0) return start;
const k = Vec.Sub(point, start).dpr(u) / l;
const cx = start.x + u.x * k;
if (cx < Math.min(start.x, end.x)) return start.x < end.x ? start : end;
if (cx > Math.max(start.x, end.x)) return start.x > end.x ? start : end;
const cy = start.y + u.y * k;
if (cy < Math.min(start.y, end.y)) return start.y < end.y ? start : end;
if (cy > Math.max(start.y, end.y)) return start.y > end.y ? start : end;
return new Vec(cx, cy);
}
hitTestLineSegment(A, B, distance = 0) {
return linesIntersect(A, B, this.start, this.end) || this.distanceToLineSegment(A, B) <= distance;
}
getSvgPathData(first = true) {
const { start, end } = this;
return `${first ? `M${start.toFixed()}` : ``} L${end.toFixed()}`;
}
}
export {
Edge2d
};
//# sourceMappingURL=Edge2d.mjs.map