open Emgu.CV
open Emgu.CV.Structure
-type Ellipse (cx: float, cy: float, a: float, b: float, alpha: float) =
+open Const
+
+type Ellipse (cx: float32, cy: float32, a: float32, b: float32, alpha: float32) =
member this.Cx = cx
member this.Cy = cy
member this.A = a
member this.B = b
member this.Alpha = alpha
- member this.Area = a * b * Math.PI
+ member this.Area = a * b * PI
// Does the ellipse contain the point (x, y)?.
member this.Contains x y =
- ((x - cx) * cos alpha + (y - cy) * sin alpha) ** 2.0 / a ** 2.0 + ((x - cx) * sin alpha - (y - cy) * cos alpha) ** 2.0 / b ** 2.0 <= 1.0
+ ((x - cx) * cos alpha + (y - cy) * sin alpha) ** 2.f / a ** 2.f + ((x - cx) * sin alpha - (y - cy) * cos alpha) ** 2.f / b ** 2.f <= 1.f
- member this.CutAVericalLine (y: float) : bool =
- a ** 2.0 + b ** 2.0 - 2.0 * y ** 2.0 + 4.0 * y * cx - 2.0 * cx ** 2.0 + a ** 2.0 * cos (2.0 * alpha) - b ** 2.0 * cos (2.0 * alpha) > 0.0
+ member this.CutAVericalLine (y: float32) : bool =
+ a ** 2.f + b ** 2.f - 2.f * y ** 2.f + 4.f * y * cx - 2.f * cx ** 2.f + a ** 2.f * cos (2.f * alpha) - b ** 2.f * cos (2.f * alpha) > 0.f
- member this.CutAnHorizontalLine (x: float) : bool =
- a ** 2.0 + b ** 2.0 - 2.0 * x ** 2.0 + 4.0 * x * cy - 2.0 * cy ** 2.0 - a ** 2.0 * cos (2.0 * alpha) + b ** 2.0 * cos (2.0 * alpha) > 0.0
+ member this.CutAnHorizontalLine (x: float32) : bool =
+ a ** 2.f + b ** 2.f - 2.f * x ** 2.f + 4.f * x * cy - 2.f * cy ** 2.f - a ** 2.f * cos (2.f * alpha) + b ** 2.f * cos (2.f * alpha) > 0.f
- member this.isOutside (width: float) (height: float) =
- this.Cx < 0.0 || this.Cx >= width ||
- this.Cy < 0.0 || this.Cy >= height ||
- this.CutAVericalLine 0.0 || this.CutAVericalLine width ||
- this.CutAnHorizontalLine 0.0 || this.CutAnHorizontalLine height
+ member this.isOutside (width: float32) (height: float32) =
+ this.Cx < 0.f || this.Cx >= width ||
+ this.Cy < 0.f || this.Cy >= height ||
+ this.CutAVericalLine 0.f || this.CutAVericalLine width ||
+ this.CutAnHorizontalLine 0.f || this.CutAnHorizontalLine height
- member this.Scale (factor: float) =
+ member this.Scale (factor: float32) =
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)))
+ PI * (3.f * (this.A + this.B) - sqrt ((3.f * this.A + this.B) * (this.A + 3.f * this.B)))
override this.ToString () =
sprintf "(cx: %A, cy: %A, a: %A, b: %A, alpha: %A)" this.Cx this.Cy this.A this.B this.Alpha
type Cell = {
cellClass: CellClass
center: Point
+ stainArea: int
elements: Matrix<byte> }
[<Struct>]
-type Line (a: float, b: float) =
+type Line (a: float32, b: float32) =
member this.A = a
member this.B = b
+ member this.Valid = not (Single.IsInfinity this.A)
[<Struct>]
-type PointD (x: float, y: float) =
+type PointD (x: float32, y: float32) =
member this.X = x
member this.Y = y