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package.dist.chunks.mermaid.esm.min.chunk-S67DUUA5.mjs.map Maven / Gradle / Ivy

{
  "version": 3,
  "sources": ["../../../src/utils/lineWithOffset.ts"],
  "sourcesContent": ["import type { EdgeData, Point } from '../types.js';\n\n// We need to draw the lines a bit shorter to avoid drawing\n// under any transparent markers.\n// The offsets are calculated from the markers' dimensions.\nconst markerOffsets = {\n  aggregation: 18,\n  extension: 18,\n  composition: 18,\n  dependency: 6,\n  lollipop: 13.5,\n  arrow_point: 4,\n} as const;\n\n/**\n * Calculate the deltas and angle between two points\n * @param point1 - First point\n * @param point2 - Second point\n * @returns The angle, deltaX and deltaY\n */\nfunction calculateDeltaAndAngle(\n  point1?: Point | [number, number],\n  point2?: Point | [number, number]\n): { angle: number; deltaX: number; deltaY: number } {\n  if (point1 === undefined || point2 === undefined) {\n    return { angle: 0, deltaX: 0, deltaY: 0 };\n  }\n  point1 = pointTransformer(point1);\n  point2 = pointTransformer(point2);\n  const [x1, y1] = [point1.x, point1.y];\n  const [x2, y2] = [point2.x, point2.y];\n  const deltaX = x2 - x1;\n  const deltaY = y2 - y1;\n  return { angle: Math.atan(deltaY / deltaX), deltaX, deltaY };\n}\n\nconst pointTransformer = (data: Point | [number, number]) => {\n  if (Array.isArray(data)) {\n    return { x: data[0], y: data[1] };\n  }\n  return data;\n};\n\nexport const getLineFunctionsWithOffset = (\n  edge: Pick\n) => {\n  return {\n    x: function (\n      this: void,\n      d: Point | [number, number],\n      i: number,\n      data: (Point | [number, number])[]\n    ) {\n      let offset = 0;\n      const DIRECTION =\n        pointTransformer(data[0]).x < pointTransformer(data[data.length - 1]).x ? 'left' : 'right';\n      if (i === 0 && Object.hasOwn(markerOffsets, edge.arrowTypeStart)) {\n        const { angle, deltaX } = calculateDeltaAndAngle(data[0], data[1]);\n        offset =\n          markerOffsets[edge.arrowTypeStart as keyof typeof markerOffsets] *\n          Math.cos(angle) *\n          (deltaX >= 0 ? 1 : -1);\n      } else if (i === data.length - 1 && Object.hasOwn(markerOffsets, edge.arrowTypeEnd)) {\n        const { angle, deltaX } = calculateDeltaAndAngle(\n          data[data.length - 1],\n          data[data.length - 2]\n        );\n        offset =\n          markerOffsets[edge.arrowTypeEnd as keyof typeof markerOffsets] *\n          Math.cos(angle) *\n          (deltaX >= 0 ? 1 : -1);\n      }\n\n      const differenceToEnd = Math.abs(\n        pointTransformer(d).x - pointTransformer(data[data.length - 1]).x\n      );\n      const differenceInYEnd = Math.abs(\n        pointTransformer(d).y - pointTransformer(data[data.length - 1]).y\n      );\n      const differenceToStart = Math.abs(pointTransformer(d).x - pointTransformer(data[0]).x);\n      const differenceInYStart = Math.abs(pointTransformer(d).y - pointTransformer(data[0]).y);\n      const startMarkerHeight = markerOffsets[edge.arrowTypeStart as keyof typeof markerOffsets];\n      const endMarkerHeight = markerOffsets[edge.arrowTypeEnd as keyof typeof markerOffsets];\n      const extraRoom = 1;\n\n      // Adjust the offset if the difference is smaller than the marker height\n      if (\n        differenceToEnd < endMarkerHeight &&\n        differenceToEnd > 0 &&\n        differenceInYEnd < endMarkerHeight\n      ) {\n        let adjustment = endMarkerHeight + extraRoom - differenceToEnd;\n        adjustment *= DIRECTION === 'right' ? -1 : 1;\n        // Adjust the offset by the amount needed to fit the marker\n        offset -= adjustment;\n      }\n\n      if (\n        differenceToStart < startMarkerHeight &&\n        differenceToStart > 0 &&\n        differenceInYStart < startMarkerHeight\n      ) {\n        let adjustment = startMarkerHeight + extraRoom - differenceToStart;\n        adjustment *= DIRECTION === 'right' ? -1 : 1;\n        offset += adjustment;\n      }\n\n      return pointTransformer(d).x + offset;\n    },\n    y: function (\n      this: void,\n      d: Point | [number, number],\n      i: number,\n      data: (Point | [number, number])[]\n    ) {\n      let offset = 0;\n      const DIRECTION =\n        pointTransformer(data[0]).y < pointTransformer(data[data.length - 1]).y ? 'down' : 'up';\n      if (i === 0 && Object.hasOwn(markerOffsets, edge.arrowTypeStart)) {\n        const { angle, deltaY } = calculateDeltaAndAngle(data[0], data[1]);\n        offset =\n          markerOffsets[edge.arrowTypeStart as keyof typeof markerOffsets] *\n          Math.abs(Math.sin(angle)) *\n          (deltaY >= 0 ? 1 : -1);\n      } else if (i === data.length - 1 && Object.hasOwn(markerOffsets, edge.arrowTypeEnd)) {\n        const { angle, deltaY } = calculateDeltaAndAngle(\n          data[data.length - 1],\n          data[data.length - 2]\n        );\n        offset =\n          markerOffsets[edge.arrowTypeEnd as keyof typeof markerOffsets] *\n          Math.abs(Math.sin(angle)) *\n          (deltaY >= 0 ? 1 : -1);\n      }\n\n      const differenceToEnd = Math.abs(\n        pointTransformer(d).y - pointTransformer(data[data.length - 1]).y\n      );\n      const differenceInXEnd = Math.abs(\n        pointTransformer(d).x - pointTransformer(data[data.length - 1]).x\n      );\n      const differenceToStart = Math.abs(pointTransformer(d).y - pointTransformer(data[0]).y);\n      const differenceInXStart = Math.abs(pointTransformer(d).x - pointTransformer(data[0]).x);\n      const startMarkerHeight = markerOffsets[edge.arrowTypeStart as keyof typeof markerOffsets];\n      const endMarkerHeight = markerOffsets[edge.arrowTypeEnd as keyof typeof markerOffsets];\n      const extraRoom = 1;\n\n      // Adjust the offset if the difference is smaller than the marker height\n      if (\n        differenceToEnd < endMarkerHeight &&\n        differenceToEnd > 0 &&\n        differenceInXEnd < endMarkerHeight\n      ) {\n        let adjustment = endMarkerHeight + extraRoom - differenceToEnd;\n        adjustment *= DIRECTION === 'up' ? -1 : 1;\n        // Adjust the offset by the amount needed to fit the marker\n        offset -= adjustment;\n      }\n\n      if (\n        differenceToStart < startMarkerHeight &&\n        differenceToStart > 0 &&\n        differenceInXStart < startMarkerHeight\n      ) {\n        let adjustment = startMarkerHeight + extraRoom - differenceToStart;\n        adjustment *= DIRECTION === 'up' ? -1 : 1;\n        offset += adjustment;\n      }\n      return pointTransformer(d).y + offset;\n    },\n  };\n};\n\nif (import.meta.vitest) {\n  const { it, expect, describe } = import.meta.vitest;\n  describe('calculateDeltaAndAngle', () => {\n    it('should calculate the angle and deltas between two points', () => {\n      expect(calculateDeltaAndAngle([0, 0], [0, 1])).toStrictEqual({\n        angle: 1.5707963267948966,\n        deltaX: 0,\n        deltaY: 1,\n      });\n      expect(calculateDeltaAndAngle([1, 0], [0, -1])).toStrictEqual({\n        angle: 0.7853981633974483,\n        deltaX: -1,\n        deltaY: -1,\n      });\n      expect(calculateDeltaAndAngle({ x: 1, y: 0 }, [0, -1])).toStrictEqual({\n        angle: 0.7853981633974483,\n        deltaX: -1,\n        deltaY: -1,\n      });\n      expect(calculateDeltaAndAngle({ x: 1, y: 0 }, { x: 1, y: 0 })).toStrictEqual({\n        angle: NaN,\n        deltaX: 0,\n        deltaY: 0,\n      });\n    });\n\n    it('should calculate the angle and deltas if one point in undefined', () => {\n      expect(calculateDeltaAndAngle(undefined, [0, 1])).toStrictEqual({\n        angle: 0,\n        deltaX: 0,\n        deltaY: 0,\n      });\n      expect(calculateDeltaAndAngle([0, 1], undefined)).toStrictEqual({\n        angle: 0,\n        deltaX: 0,\n        deltaY: 0,\n      });\n    });\n  });\n}\n"],
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  "names": ["markerOffsets", "calculateDeltaAndAngle", "point1", "point2", "pointTransformer", "x1", "y1", "x2", "y2", "deltaX", "deltaY", "__name", "data", "getLineFunctionsWithOffset", "edge", "d", "i", "offset", "DIRECTION", "angle", "differenceToEnd", "differenceInYEnd", "differenceToStart", "differenceInYStart", "startMarkerHeight", "endMarkerHeight", "extraRoom", "adjustment", "differenceInXEnd", "differenceInXStart"]
}