Pansies.psm1
using namespace PoshCode.Pansies using namespace ColorMine.ColorSpaces if(-not $IsLinux) { [PoshCode.Pansies.Console.WindowsHelper]::EnableVirtualTerminalProcessing() } if(Get-Command Add-MetadataConverter -ErrorAction SilentlyContinue) { Add-MetadataConverter @{ RgbColor = { [PoshCode.Pansies.RgbColor]$args[0] } [PoshCode.Pansies.RgbColor] = { "RgbColor '$_'" } } } function Get-Complement { <# .SYNOPSIS Get the Hue complement color .DESCRIPTION Rotate 180 degrees around the Hue of HSL #> [CmdletBinding()] param( # The source color to calculate the complement of [Parameter(ValueFromPipeline, Mandatory)] [PoshCode.Pansies.RgbColor]$Color, # Force the luminance to have "enough" contrast [switch]$ForceContrast, # Assume there are only 16 colors [switch]$ConsoleColor, # If set, output the input $Color before the complement [switch]$Passthru ) process { if($ConsoleColor) { $Color = $Color.ConsoleColor } if($Passthru) { $Color } if($ConsoleColor) { if($Color.ToHunterLab().L -lt 50) { [PoshCode.Pansies.RgbColor][ConsoleColor]::White } else { [PoshCode.Pansies.RgbColor][ConsoleColor]::Black } } else { $Hsl = $Color.ToHsl() $Hsl.H = ($Hsl.H + 180) % 360 if($ForceContrast) { $Lab = $Hsl.ToHunterLab() $Source = $Color.ToHunterLab() $Lab.L = ($Source.L + 50) % 100 [PoshCode.Pansies.RgbColor]$Lab } else { [PoshCode.Pansies.RgbColor]$Hsl } } } } function Get-Gradient { <# .Synopsis Get a range of colors from one or more colors #> [CmdletBinding()] [OutputType([PoshCode.Pansies.RgbColor[][]],[PoshCode.Pansies.RgbColor[]])] param( # One or more colors to generate a gradient from [Parameter(Mandatory, Position=0)] [PoshCode.Pansies.RgbColor]$StartColor, [Parameter(Mandatory, Position=1)] [PoshCode.Pansies.RgbColor]$EndColor, [Parameter(Position=2)] [Alias("Length","Count","Steps")] [int]$Width = $Host.UI.RawUI.WindowSize.Width, [Parameter(Position=3)] [int]$Height = 1, [ValidateSet("CMY","CMYK","LAB","LCH","LUV","HunterLAB","HSL","HSV","HSB","RGB","XYZ","YXY")] $ColorSpace = "HunterLab", # For color spaces with Hue (HSL, HSV), setting this generates the gradient the long way [switch]$Reverse, [switch]$Flatten ) $Height = [Math]::Max(1, $Height) $Width = [Math]::Max(1, $Width) $Colors = new-object PoshCode.Pansies.RgbColor[][] $Height, $Width # Simple pythagorean distance $Size = [Math]::Sqrt(($Height - 1) * ($Height - 1) + ($Width - 1) * ($Width - 1)) $Left = $StartColor."To$ColorSpace"() $Right = $EndColor."To$ColorSpace"() $StepSize = New-Object "${ColorSpace}Color" -Property @{ Ordinals = $( foreach ($i in 0..($Left.Ordinals.Count-1)) { ($Right.Ordinals[$i] - $Left.Ordinals[$i]) / $Size } ) } Write-Verbose "Size: $('{0:N2}' -f $Size) ($Width x $Height) ($($Colors.Length) x $($Colors[0].Length))" Write-Verbose "Diff: {$StepSize}" Write-Verbose "From: {$Left} $($StartColor.Ordinals)" Write-Verbose "To: {$Right} $($EndColor.Ordinals)" # For colors based on hue rotation, the math is slightly more complex: [bool]$RotatingColor = $StepSize | Get-Member H if($RotatingColor) { [Bool]$Change = [Math]::Abs($StepSize.H) -ge 180 / $Size if ($Reverse) { $Change = !$Change } if ($Change) { $StepSize.H = if ($StepSize.H -gt 0) { $StepSize.H - 360 / $Size } else { $StepSize.H + 360 / $Size } } $Ceiling = 360 } for ($Line = 1; $Line -le $Height; $Line++) { for ($Column = 1; $Column -le $Width; $Column++) { $D = [Math]::Sqrt(($Line - 1) * ($Line - 1) + ($Column - 1) * ($Column - 1)) $StepColor = New-Object "${ColorSpace}Color" -Property @{ Ordinals = $( foreach ($i in 0..$Left.Ordinals.Count) { $Left.Ordinals[$i] + $StepSize.Ordinals[$i] * $D } ) } # For colors based on hue rotation, the math is slightly more complex: if($RotatingColor) { if($StepColor.H -lt 0) { $StepColor.H += 360 } $StepColor.H %= $Ceiling } $Ordinals1 = $StepColor.Ordinals $Colors[$Line - 1][$Column - 1] = $StepColor.ToRgb() $Ordinals2 = $Colors[$Line - 1][$Column - 1].Ordinals Write-Debug ("Step ${Line},${Column}: {0:N2}, {1:N2}, {2:N2} => {3:N2}, {4:N2}, {5:N2}" -f $Ordinals1[0], $Ordinals1[1], $Ordinals1[2], $Ordinals2[0], $Ordinals2[1], $Ordinals2[2] ) } } if ($Flatten) { $Colors.GetEnumerator().GetEnumerator() } else { ,$Colors } } # 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