Parasitemia/ParasitemiaUI/State.fs

   1 module ParasitemiaUI.State
   2
   3 open System
   4 open System.Collections.Generic
   5 open System.Windows
   6
   7 open Emgu.CV
   8 open Emgu.CV.Structure
   9
  10 open Types
  11
  12 type State () =
  13     let sourceImages = List<SourceImage>()
  14     let mutable alteredSinceLastSave = false
  15     let mutable patientID = ""
  16
  17     member this.AlteredSinceLastSave = alteredSinceLastSave
  18     member val CurrentImage: SourceImage option = None with get, set
  19     member val FilePath: string = "" with get, set
  20
  21     member this.PatientID
  22         with get () : string = patientID
  23         and set id =
  24             if id <> patientID
  25             then
  26                 alteredSinceLastSave <- true
  27                 patientID <- id
  28
  29     member this.ImageParasitemia (srcImg: SourceImage) : int * int =
  30         List.length srcImg.rbcs,
  31         srcImg.rbcs |> List.fold (fun nbInfected rbc -> if rbc.infected then nbInfected + 1 else nbInfected) 0
  32
  33     member this.GlobalParasitemia : int * int =
  34         sourceImages
  35         |> Seq.fold (fun (nbTotal, nbTotalInfected) srcImg ->
  36                         let nb, nbInfected = this.ImageParasitemia srcImg
  37                         nbTotal + nb, nbTotalInfected + nbInfected) (0, 0)
  38
  39
  40     member this.SetAsInfected (rbc: RBC) (infected: bool) =
  41         if infected <> rbc.infected
  42         then
  43             alteredSinceLastSave <- true
  44             rbc.infected <- infected
  45             rbc.setManually <- not rbc.setManually
  46
  47     /// <summary>
  48     /// Save the current state. 'FilePath' must have been defined.
  49     /// </summary>
  50     /// <exception cref="System.IOException">If the file cannot be saved</exception>
  51     member this.Save () =
  52         let data = { PiaZ.DocumentData.patientID = this.PatientID; PiaZ.DocumentData.images = List.ofSeq sourceImages }
  53         PiaZ.save this.FilePath data
  54         alteredSinceLastSave <- false
  55
  56     /// <summary>
  57     /// Load the current state. 'FilePath' must have been defined.
  58     /// </summary>
  59     /// <exception cref="System.IOException">If the file cannot be laoded</exception>
  60     member this.Load () =
  61         let data = PiaZ.load this.FilePath
  62         this.PatientID <- data.patientID
  63         sourceImages.Clear()
  64         sourceImages.InsertRange(0, data.images)
  65         if sourceImages.Count > 0
  66         then this.CurrentImage <- Some sourceImages.[0]
  67         alteredSinceLastSave <- false
  68
  69     member this.AddSourceImage (filePath: string) (defaultConfig: ParasitemiaCore.Config.Config) : SourceImage =
  70         let srcImg = { num = sourceImages.Count + 1; config = defaultConfig.Copy(); dateLastAnalysis = DateTime(0L); rbcs = []; img = new Image<Bgr, byte>(filePath) }
  71         sourceImages.Add(srcImg)
  72         if sourceImages.Count = 1
  73         then this.CurrentImage <- Some sourceImages.[0]
  74         alteredSinceLastSave <- true
  75         srcImg
  76
  77     member this.RemoveSourceImage (srcImg: SourceImage) =
  78         let isCurrent =
  79             match this.CurrentImage with
  80             | Some srcImg' -> srcImg = srcImg'
  81             | _ -> false
  82
  83         if sourceImages.Remove(srcImg)
  84         then
  85             alteredSinceLastSave <- true
  86             if isCurrent
  87             then
  88                 this.CurrentImage <- if sourceImages.Count > 0 then Some sourceImages.[0] else None
  89         // Re-numbered the images.
  90         sourceImages |> Seq.iteri (fun i srcImg -> srcImg.num <- i + 1)
  91
  92     member this.SetResult (imgNum: int) (cells: ParasitemiaCore.Types.Cell list) =
  93         let sourceImage = sourceImages.Find(fun srcImg -> srcImg.num = imgNum)
  94
  95         let w = sourceImage.img.Width
  96         let h = sourceImage.img.Height
  97
  98         sourceImage.dateLastAnalysis <- DateTime.UtcNow
  99
 100         // To match with previously manually altered RBC.
 101         let manuallyAlteredPreviousRBCS = sourceImage.rbcs |> List.filter (fun rbc -> rbc.setManually)
 102         let tolerance = (float sourceImage.config.RBCRadius.Pixel) * 0.5 // +/-.
 103         let getPreviousRBC (center: Point) : RBC option =
 104             manuallyAlteredPreviousRBCS |> List.tryFind (fun rbc -> rbc.center.X > center.X - tolerance && rbc.center.X < center.X + tolerance &&
 105                                                                     rbc.center.Y > center.Y - tolerance && rbc.center.Y < center.Y + tolerance)
 106
 107         sourceImage.rbcs <- cells
 108             |> List.filter (fun cell -> match cell.cellClass with ParasitemiaCore.Types.HealthyRBC | ParasitemiaCore.Types.InfectedRBC -> true | _ -> false )
 109             |> List.sortByDescending (fun cell -> cell.infectedArea, (w - cell.center.X) + (h - cell.center.Y))
 110             |> List.mapi (fun i cell ->
 111                 let center = Point(float cell.center.X, float cell.center.Y)
 112                 let infected, setManually =
 113                     match getPreviousRBC center with
 114                     | Some rbc -> rbc.infected, true
 115                     | _ -> cell.cellClass = ParasitemiaCore.Types.InfectedRBC, false
 116
 117                 { num = i + 1
 118                   infected = infected
 119                   setManually = setManually
 120                   center = center
 121                   size = Size(float cell.elements.Width, float cell.elements.Height)
 122                   infectedArea = cell.infectedArea })
 123
 124         alteredSinceLastSave <- true
 125
 126     member this.SourceImages : SourceImage seq =
 127         sourceImages :> SourceImage seq
 128
 129     member this.Reset () =
 130         this.PatientID <- ""
 131         this.FilePath <- ""
 132         this.CurrentImage <- None
 133         sourceImages.Clear()
 134         alteredSinceLastSave <- false