@tldraw/editor/dist-esm/lib/primitives/geometry/Polyline2d.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../../src/lib/primitives/geometry/Polyline2d.ts"],
  "sourcesContent": ["import { Vec, VecLike } from '../Vec'\nimport { Edge2d } from './Edge2d'\nimport { Geometry2d, Geometry2dOptions } from './Geometry2d'\n\n/** @public */\nexport class Polyline2d extends Geometry2d {\n\tprivate _points: Vec[]\n\tprivate _segments?: Edge2d[]\n\n\tconstructor(config: Omit<Geometry2dOptions, 'isFilled' | 'isClosed'> & { points: Vec[] }) {\n\t\tsuper({ isClosed: false, isFilled: false, ...config })\n\t\tconst { points } = config\n\t\tthis._points = points\n\n\t\tif (points.length < 2) {\n\t\t\tthrow new Error('Polyline2d: points must be an array of at least 2 points')\n\t\t}\n\t}\n\n\t// eslint-disable-next-line no-restricted-syntax\n\tprotected get segments() {\n\t\tif (!this._segments) {\n\t\t\tthis._segments = []\n\t\t\tconst { vertices } = this\n\t\t\tfor (let i = 0, n = vertices.length - 1; i < n; i++) {\n\t\t\t\tconst start = vertices[i]\n\t\t\t\tconst end = vertices[i + 1]\n\t\t\t\tthis._segments.push(new Edge2d({ start, end }))\n\t\t\t}\n\n\t\t\tif (this.isClosed) {\n\t\t\t\tthis._segments.push(new Edge2d({ start: vertices[vertices.length - 1], end: vertices[0] }))\n\t\t\t}\n\t\t}\n\n\t\treturn this._segments\n\t}\n\n\toverride getLength() {\n\t\treturn this.segments.reduce((acc, segment) => acc + segment.length, 0)\n\t}\n\n\tgetVertices() {\n\t\treturn this._points\n\t}\n\n\tnearestPoint(A: VecLike): Vec {\n\t\tconst { segments } = this\n\t\tlet nearest = this._points[0]\n\t\tlet dist = Infinity\n\t\tlet p: Vec // current point on segment\n\t\tlet d: number // distance from A to p\n\t\tfor (let i = 0; i < segments.length; i++) {\n\t\t\tp = segments[i].nearestPoint(A)\n\t\t\td = Vec.Dist2(p, A)\n\t\t\tif (d < dist) {\n\t\t\t\tnearest = p\n\t\t\t\tdist = d\n\t\t\t}\n\t\t}\n\t\tif (!nearest) throw Error('nearest point not found')\n\t\treturn nearest\n\t}\n\n\thitTestLineSegment(A: VecLike, B: VecLike, distance = 0): boolean {\n\t\tconst { segments } = this\n\t\tfor (let i = 0, n = segments.length; i < n; i++) {\n\t\t\tif (segments[i].hitTestLineSegment(A, B, distance)) {\n\t\t\t\treturn true\n\t\t\t}\n\t\t}\n\t\treturn false\n\t}\n\n\tgetSvgPathData(): string {\n\t\tconst { vertices } = this\n\t\tif (vertices.length < 2) return ''\n\t\treturn vertices.reduce((acc, vertex, i) => {\n\t\t\tif (i === 0) return `M ${vertex.x} ${vertex.y}`\n\t\t\treturn `${acc} L ${vertex.x} ${vertex.y}`\n\t\t}, '')\n\t}\n}\n"],
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