X-Git-Url: http://git.euphorik.ch/?p=master-thesis.git;a=blobdiff_plain;f=Parasitemia%2FParasitemia%2FTypes.fs;h=a5511426482a761143f502444e6ef6efbbf6f1c6;hp=d7bacbd2f4d097c3e75cc4bc405e58c33d582cf5;hb=b070295cf67b2025164a34b6594e84f0d771cdc9;hpb=8cf3b0a302943312c588690b4e4c90af17b3e87a

diff --git a/Parasitemia/Parasitemia/Types.fs b/Parasitemia/Parasitemia/Types.fs
index d7bacbd..a551142 100644
--- a/Parasitemia/Parasitemia/Types.fs
+++ b/Parasitemia/Parasitemia/Types.fs
@@ -30,6 +30,13 @@ type Ellipse (cx: float, cy: float, a: float, b: float, alpha: float) =
         this.CutAVericalLine 0.0 || this.CutAVericalLine width ||
         this.CutAnHorizontalLine 0.0 || this.CutAnHorizontalLine height
 
+    member this.Scale (factor: float) =
+        Ellipse(this.Cx, this.Cy, this.A * factor, this.B * factor, alpha)
+
+    // Approximation of Ramanujan.
+    member this.Perimeter =
+        Math.PI * (3.0 * (this.A + this.B) - sqrt ((3.0 * this.A + this.B) * (this.A + 3.0 * this.B)))
+
 
 type CellClass = HealthyRBC | InfectedRBC | Peculiar