{
  "version": 3,
  "sources": ["../../../../src/lib/primitives/geometry/Circle2d.ts"],
  "sourcesContent": ["import { Box } from '../Box'\nimport { intersectLineSegmentCircle } from '../intersect'\nimport { PI2, getPointOnCircle } from '../utils'\nimport { Vec, VecLike } from '../Vec'\nimport { getVerticesCountForArcLength } from './geometry-constants'\nimport { Geometry2d, Geometry2dOptions } from './Geometry2d'\n\n/** @public */\nexport class Circle2d extends Geometry2d {\n\tprivate _center: Vec\n\tprivate _radius: number\n\tprivate _x: number\n\tprivate _y: number\n\n\tconstructor(\n\t\tpublic config: Omit<Geometry2dOptions, 'isClosed'> & {\n\t\t\tx?: number\n\t\t\ty?: number\n\t\t\tradius: number\n\t\t\tisFilled: boolean\n\t\t}\n\t) {\n\t\tsuper({ isClosed: true, ...config })\n\t\tconst { x = 0, y = 0, radius } = config\n\t\tthis._x = x\n\t\tthis._y = y\n\t\tthis._center = new Vec(radius + x, radius + y)\n\t\tthis._radius = radius\n\t}\n\n\tgetBounds() {\n\t\treturn new Box(this._x, this._y, this._radius * 2, this._radius * 2)\n\t}\n\n\tgetVertices(): Vec[] {\n\t\tconst { _center, _radius: radius } = this\n\t\tconst perimeter = PI2 * radius\n\t\tconst vertices: Vec[] = []\n\t\tfor (let i = 0, n = getVerticesCountForArcLength(perimeter); i < n; i++) {\n\t\t\tconst angle = (i / n) * PI2\n\t\t\tvertices.push(getPointOnCircle(_center, radius, angle))\n\t\t}\n\t\treturn vertices\n\t}\n\n\tnearestPoint(point: VecLike): Vec {\n\t\t// Inlined: Vec.Sub(point, _center).uni().mul(radius).add(_center)\n\t\t// Computes direction from center to point, normalizes, scales by radius, offsets by center.\n\t\tconst { _center, _radius: radius } = this\n\t\tconst dx = point.x - _center.x\n\t\tconst dy = point.y - _center.y\n\t\tconst len = Math.sqrt(dx * dx + dy * dy)\n\t\tif (len === 0) return new Vec(_center.x + radius, _center.y)\n\t\tconst scale = radius / len\n\t\treturn new Vec(_center.x + dx * scale, _center.y + dy * scale)\n\t}\n\n\toverride distanceToPoint(point: VecLike, hitInside = false): number {\n\t\t// Inlined: Math.abs(Vec.Dist(point, _center) - radius)\n\t\t// Computes distance from point to center, then subtracts radius for edge distance.\n\t\t// Returns negative when inside a filled circle to indicate containment.\n\t\tconst { _center, _radius: radius } = this\n\t\tconst dx = point.x - _center.x\n\t\tconst dy = point.y - _center.y\n\t\tconst dist = Math.sqrt(dx * dx + dy * dy)\n\t\tconst distToEdge = dist - radius\n\t\tif (distToEdge < 0 && (this.isFilled || hitInside)) {\n\t\t\treturn distToEdge\n\t\t}\n\t\treturn Math.abs(distToEdge)\n\t}\n\n\toverride hitTestPoint(point: VecLike, margin = 0, hitInside = false): boolean {\n\t\t// Equivalent to: dist = Vec.Dist(point, _center); return dist within [radius - margin, radius + margin]\n\t\t// Uses squared distances throughout to avoid any sqrt calls.\n\t\tconst { _center, _radius: radius } = this\n\t\tconst dx = point.x - _center.x\n\t\tconst dy = point.y - _center.y\n\t\tconst dist2 = dx * dx + dy * dy\n\t\tif ((this.isFilled || hitInside) && dist2 <= radius * radius) {\n\t\t\treturn true\n\t\t}\n\t\tconst outerR = radius + margin\n\t\tif (dist2 > outerR * outerR) return false\n\t\tconst innerR = radius - margin\n\t\tif (innerR <= 0) return true\n\t\treturn dist2 >= innerR * innerR\n\t}\n\n\thitTestLineSegment(A: VecLike, B: VecLike, distance = 0): boolean {\n\t\tconst { _center, _radius: radius } = this\n\t\treturn intersectLineSegmentCircle(A, B, _center, radius + distance) !== null\n\t}\n\n\tgetSvgPathData(): string {\n\t\tconst { _center, _radius: radius } = this\n\t\treturn `M${_center.x + radius},${_center.y} a${radius},${radius} 0 1,0 ${radius * 2},0a${radius},${radius} 0 1,0 -${radius * 2},0`\n\t}\n}\n"],
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