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