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    Class math

    a collection of mathematical utility functions used by the chart classes

    Index

    Constructors

    constructor

    Methods

    clipLine clipLineX clipPolygon convexHull intersectionLineLine lineIntersectsLine pointInPolygon pointInRect pointOnLine rectInRect

    Constructors

    Methods

    • clips a line to the specified bounding rectangle

      Parameters

      • p1x: number
      • p1y: number
      • p2x: number
      • p2y: number
      • rect: Bounds

      Returns false | [x: number, y: number, x2: number, y2: number, shift: number]

    • clips a line to the specified x range

      Parameters

      • p1x: number
      • p1y: number
      • p2x: number
      • p2y: number
      • rx1: number
      • rx2: number

      Returns [number, number, number, number]

    • Parameters

      • points: [number, number][]
      • rect: Bounds

      Returns false | [number, number][]

    • calculates the convex hull of a set of points (using the gift wrapping algorithm)

      Type Parameters

      • HullPoint extends { x: number; y: number }

      Parameters

      Returns HullPoint[]

    • calculates the intersection point of two lines

      Parameters

      • x1: number
      • y1: number
      • x2: number
      • y2: number
      • x3: number
      • y3: number
      • x4: number
      • y4: number

      Returns { x: number; y: number }

    • checks if a line (x1,y1)->(x2,y2) intersects with another line (x3,y3)->(x4,y4) from: https://stackoverflow.com/a/24392281

      Parameters

      • x1: number
      • y1: number
      • x2: number
      • y2: number
      • x3: number
      • y3: number
      • x4: number
      • y4: number

      Returns boolean

    • determines if a point resides inside of a polygon

      Parameters

      • x: number
      • y: number
      • points: { x: number; y: number }[]

      Returns boolean

    • checks if the specified point lies within the provided bounding rectangle

      Parameters

      • x: number
      • y: number
      • rect: Bounds | { right: number; top: number; x: number; y: number }

      Returns boolean

    • checks if a point lies on (or is near, depending on range parameter) a line segment

      Parameters

      • x0: number

        x coordinate of point

      • y0: number

        y coordinate of point

      • x1: number

        x coordinate of first line point

      • y1: number

        y coordinate of first line point

      • x2: number

        x coordinate of second line point

      • y2: number

        y coordinate of second line point

      • range: number

        maximum allowed distance to the line

      Returns boolean

    • checks if two rectangles intersect

      Type Parameters

      • Rectangle extends { right: number; top: number; x: number; y: number }

      Parameters

      Returns boolean

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