src/applied.ps1
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function ConvertTo-Degree { <# .SYNOPSIS Convert radians to degrees #> [CmdletBinding()] [Alias('toDegree')] [OutputType([Double])] Param( [Parameter(Mandatory=$true, Position=0, ValueFromPipeline=$true)] [Double] $Radians ) Process { ($Radians * (180 / [Math]::Pi)) % 360 } } function ConvertTo-Radian { <# .SYNOPSIS Convert degrees to radians #> [CmdletBinding()] [Alias('toRadian')] [OutputType([Double])] Param( [Parameter(Mandatory=$true, Position=0, ValueFromPipeline=$true)] [Double] $Degrees ) Process { ($Degrees % 360) * ([Math]::Pi / 180) } } function Get-Haversine { <# .SYNOPSIS Return haversine of an angle .DESCRIPTION The Haversine is most frequently used within the Haversine formula when calculating great-circle distance between two points on a sphere. Note: Available as static method of Prelude class - [Prelude]::Hav #> [CmdletBinding()] [OutputType([Double])] Param( [Parameter(Mandatory=$true, Position=0, ValueFromPipeline=$true)] [Double] $Degrees ) Process { 0.5 * (1 - [Math]::Cos((ConvertTo-Radian $Degrees))) } } function Get-ArcHaversine { <# .SYNOPSIS Return archaversine (ahav) of a value, in degrees. This is the inverse function of Get-Haversine. Note: Available as static method of Prelude class - [Prelude]::Ahav #> [CmdletBinding()] [OutputType([Double])] Param( [Parameter(Mandatory=$true, Position=0, ValueFromPipeline=$true)] [Double] $Value ) Process { ConvertTo-Degree ([Math]::Acos(1 - (2 * $Value))) } } |