Parasitemia/ParasitemiaCore/Utils.fs

   1 module ParasitemiaCore.Utils
   2
   3 open System
   4
   5 open Types
   6
   7 let inline roundInt v = v |> round |> int
   8
   9 let inline dprintfn fmt =
  10     Printf.ksprintf System.Diagnostics.Debug.WriteLine fmt
  11
  12 let inline lineFromTwoPoints (p1: PointF) (p2: PointF) : Line =
  13     let a = (p1.Y - p2.Y) / (p1.X - p2.X)
  14     let b = -(p2.X * p1.Y - p1.X * p2.Y) / (p1.X - p2.X)
  15     Line(a, b)
  16
  17 let inline pointFromTwoLines (l1: Line) (l2: Line) : PointF =
  18     let x = -(l1.B - l2.B) / (l1.A - l2.A)
  19     let y = -(l2.A * l1.B - l1.A * l2.B) / (l1.A - l2.A)
  20     PointF(x, y)
  21
  22 let inline linePassThroughSegment (l: Line) (p1: PointF) (p2: PointF) : bool =
  23     let p = pointFromTwoLines l (lineFromTwoPoints p1 p2)
  24     sign (p.X - p1.X) <> sign (p.X - p2.X)
  25
  26 let inline squaredDistanceTwoPoints (p1: PointF) (p2: PointF) =
  27     (p1.X - p2.X) ** 2.f + (p1.Y - p2.Y) ** 2.f
  28
  29 let inline distanceTwoPoints (p1: PointF) (p2: PointF) =
  30     squaredDistanceTwoPoints p1 p2 |> sqrt
  31
  32 let countCells (cells: Cell list) : int * int =
  33     cells |> List.fold (fun (total, infected) { cellClass = cellClass } ->
  34         match cellClass with
  35         | HealthyRBC -> (total + 1, infected)
  36         | InfectedRBC -> (total + 1, infected + 1)
  37         | Peculiar -> (total, infected)) (0, 0)