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
- // A line is defined as : y = mx + l
- member this.CutALine (m: float) (l: float) : bool =
- -2.0 * l ** 2.0 + a ** 2.0 + m ** 2.0 * a ** 2.0 + b ** 2.0 + m ** 2.0 * b ** 2.0 -
- 4.0 * m * l * cx - 2.0 * m ** 2.0 * cx ** 2.0 + 4.0 * l * cy + 4.0 * m * cx * cy -
- 2.0 * cy ** 2.0 + (-1.0 + m ** 2.0) * (a ** 2.0 - b ** 2.0) * cos (2.0 * alpha) - 2.0 * m * (a ** 2.0 - b ** 2.0) * sin (2.0 * alpha) > 0.0
-
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
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.isOutside (width: float) (height: float) =
- this.Cx <= 0.0 || this.Cx >= width ||
- this.Cy <= 0.0 || this.Cy >= height ||
+ 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
center: Point
elements: Matrix<byte> }
-
+[<Struct>]
type Line (a: float, b: float) =
member this.A = a
member this.B = b
+[<Struct>]
type PointD (x: float, y: float) =
member this.X = x
member this.Y = y