tldraw/dist-esm/lib/shapes/arrow/arrowheads.mjs.map

A tiny little drawing editor.

{
  "version": 3,
  "sources": ["../../../../src/lib/shapes/arrow/arrowheads.ts"],
  "sourcesContent": ["import { HALF_PI, PI, Vec, VecLike, intersectCircleCircle } from '@tldraw/editor'\nimport { TLArrowInfo } from './arrow-types'\n\ninterface TLArrowPointsInfo {\n\tpoint: VecLike\n\tint: VecLike\n}\n\nfunction getArrowPoints(\n\tinfo: TLArrowInfo,\n\tside: 'start' | 'end',\n\tstrokeWidth: number\n): TLArrowPointsInfo {\n\tconst PT = side === 'end' ? info.end.point : info.start.point\n\tconst PB = side === 'end' ? info.start.point : info.end.point\n\n\tconst compareLength = info.isStraight ? Vec.Dist(PB, PT) : Math.abs(info.bodyArc.length) // todo: arc length for curved arrows\n\n\tconst length = Math.max(Math.min(compareLength / 5, strokeWidth * 3), strokeWidth)\n\n\tlet P0: VecLike\n\n\tif (info.isStraight) {\n\t\tP0 = Vec.Nudge(PT, PB, length)\n\t} else {\n\t\tconst ints = intersectCircleCircle(PT, length, info.handleArc.center, info.handleArc.radius)\n\t\tP0 =\n\t\t\tside === 'end'\n\t\t\t\t? info.handleArc.sweepFlag\n\t\t\t\t\t? ints[0]\n\t\t\t\t\t: ints[1]\n\t\t\t\t: info.handleArc.sweepFlag\n\t\t\t\t\t? ints[1]\n\t\t\t\t\t: ints[0]\n\t}\n\n\tif (Vec.IsNaN(P0)) {\n\t\tP0 = info.start.point\n\t}\n\n\treturn {\n\t\tpoint: PT,\n\t\tint: P0,\n\t}\n}\n\nfunction getArrowhead({ point, int }: TLArrowPointsInfo) {\n\tconst PL = Vec.RotWith(int, point, PI / 6)\n\tconst PR = Vec.RotWith(int, point, -PI / 6)\n\n\treturn `M ${PL.x} ${PL.y} L ${point.x} ${point.y} L ${PR.x} ${PR.y}`\n}\n\nfunction getTriangleHead({ point, int }: TLArrowPointsInfo) {\n\tconst PL = Vec.RotWith(int, point, PI / 6)\n\tconst PR = Vec.RotWith(int, point, -PI / 6)\n\n\treturn `M ${PL.x} ${PL.y} L ${PR.x} ${PR.y} L ${point.x} ${point.y} Z`\n}\n\nfunction getInvertedTriangleHead({ point, int }: TLArrowPointsInfo) {\n\tconst d = Vec.Sub(int, point).div(2)\n\tconst PL = Vec.Add(point, Vec.Rot(d, HALF_PI))\n\tconst PR = Vec.Sub(point, Vec.Rot(d, HALF_PI))\n\n\treturn `M ${PL.x} ${PL.y} L ${int.x} ${int.y} L ${PR.x} ${PR.y} Z`\n}\n\nfunction getDotHead({ point, int }: TLArrowPointsInfo) {\n\tconst A = Vec.Lrp(point, int, 0.45)\n\tconst r = Vec.Dist(A, point)\n\n\treturn `M ${A.x - r},${A.y}\n  a ${r},${r} 0 1,0 ${r * 2},0\n  a ${r},${r} 0 1,0 -${r * 2},0 `\n}\n\nfunction getDiamondHead({ point, int }: TLArrowPointsInfo) {\n\tconst PB = Vec.Lrp(point, int, 0.75)\n\tconst PL = Vec.RotWith(PB, point, PI / 4)\n\tconst PR = Vec.RotWith(PB, point, -PI / 4)\n\n\tconst PQ = Vec.Lrp(PL, PR, 0.5)\n\tPQ.add(Vec.Sub(PQ, point))\n\n\treturn `M ${PQ.x} ${PQ.y} L ${PR.x} ${PR.y} ${point.x} ${point.y} L ${PL.x} ${PL.y} Z`\n}\n\nfunction getSquareHead({ int, point }: TLArrowPointsInfo) {\n\tconst PB = Vec.Lrp(point, int, 0.85)\n\tconst d = Vec.Sub(PB, point).div(2)\n\tconst PL1 = Vec.Add(point, Vec.Rot(d, HALF_PI))\n\tconst PR1 = Vec.Sub(point, Vec.Rot(d, HALF_PI))\n\tconst PL2 = Vec.Add(PB, Vec.Rot(d, HALF_PI))\n\tconst PR2 = Vec.Sub(PB, Vec.Rot(d, HALF_PI))\n\n\treturn `M ${PL1.x} ${PL1.y} L ${PL2.x} ${PL2.y} L ${PR2.x} ${PR2.y} L ${PR1.x} ${PR1.y} Z`\n}\n\nfunction getBarHead({ int, point }: TLArrowPointsInfo) {\n\tconst d = Vec.Sub(int, point).div(2)\n\n\tconst PL = Vec.Add(point, Vec.Rot(d, HALF_PI))\n\tconst PR = Vec.Sub(point, Vec.Rot(d, HALF_PI))\n\n\treturn `M ${PL.x} ${PL.y} L ${PR.x} ${PR.y}`\n}\n\n/** @public */\nexport function getArrowheadPathForType(\n\tinfo: TLArrowInfo,\n\tside: 'start' | 'end',\n\tstrokeWidth: number\n): string | undefined {\n\tconst type = side === 'end' ? info.end.arrowhead : info.start.arrowhead\n\tif (type === 'none') return\n\n\tconst points = getArrowPoints(info, side, strokeWidth)\n\tif (!points) return\n\n\tswitch (type) {\n\t\tcase 'bar':\n\t\t\treturn getBarHead(points)\n\t\tcase 'square':\n\t\t\treturn getSquareHead(points)\n\t\tcase 'diamond':\n\t\t\treturn getDiamondHead(points)\n\t\tcase 'dot':\n\t\t\treturn getDotHead(points)\n\t\tcase 'inverted':\n\t\t\treturn getInvertedTriangleHead(points)\n\t\tcase 'arrow':\n\t\t\treturn getArrowhead(points)\n\t\tcase 'triangle':\n\t\t\treturn getTriangleHead(points)\n\t}\n\n\treturn ''\n}\n"],
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  "names": []
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