by D.Progs (2 Submissions)
Category: Math/Dates
Compatability: VB 6.0
Difficulty: Unknown Difficulty
Originally Published: Sun 30th November 2008
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Wandelt kartesische in Polarkoordinaten und umgekehrt.
VBcoders
Angle As Single
Radius As Single
X As Single
Y As Single
End Type
Private Function Pi() As Double
Pi = 4 * Atn(1)
End Function
Private Function GradToRad(Grad As Single) As Single
GradToRad = Grad * Pi / 180
End Function
Public Function RadToGrad(Rad As Single) As Single
GradToRad = Grad * 180 / Pi
End Function
Private Function Arccos(Number As Double) As Double
Arccos = Atn(-Number / Sqr(-Number * Number + 1)) + 2 * Atn(1)
End Function
Private Sub PolarToKart(ByRef PolarPoint As Point)
With PolarPoint
.X = .Radius * Cos(GradToRad(.Angle))
.Y = .Radius * Sin(GradToRad(.Angle))
End With
End Sub
Private Sub KartToPolar(ByRef KartPoint As Point)
With KartPoint
.Radius = Sqr(.X ^ 2 + .Y ^ 2)
.Angle = RadToGrad(Sgn(.Y + 1 - Abs(Sgn(Y))) * Arccos(.X / .Radius))
End With
End Sub
