From 7489b8501d2e3783d7ce94daf8f7295c1b8be282 Mon Sep 17 00:00:00 2001
From: Markus Fleschutz <markus@fleschutz.de>
Date: Sat, 1 Oct 2022 22:16:07 +0200
Subject: [PATCH] Add convert-image2ascii.ps1

---
 Scripts/convert-image2ascii.ps1 | 99 +++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 Scripts/convert-image2ascii.ps1

diff --git a/Scripts/convert-image2ascii.ps1 b/Scripts/convert-image2ascii.ps1
new file mode 100644
index 00000000..d3140b7d
--- /dev/null
+++ b/Scripts/convert-image2ascii.ps1
@@ -0,0 +1,99 @@
+<#
+ .SYNOPSIS
+    Convert-ImageToAscii
+ .DESCRIPTION
+    Converts an image to ASCII art.
+ .EXAMPLE
+    Convert-ImageToAscii -InFile "C:\Folder\Image.jpg" -Width 32 -Height 32
+ .INPUTS
+ .OUTPUTS
+ .NOTES
+    Author: Fxbyy
+ .FUNCTIONALITY
+    Converts an image to ASCII art.
+ #>
+ 
+ function Convert-ImageToAscii {
+    [CmdletBinding(DefaultParameterSetName = 'AutoSize')]
+    param (
+        [Parameter(Mandatory = $true)]
+        [string] $InFile,
+
+        [Parameter(Mandatory = $false, ParameterSetName = 'CustomSize')]
+        [int] $Width,
+
+        [Parameter(Mandatory = $false, ParameterSetName = 'CustomSize')]
+        [int] $Height,
+
+        [Parameter(Mandatory = $false)]
+        [switch] $Invert
+    )
+ 
+    begin {
+        $tempFile = "$PSScriptRoot\temp.jpg"
+        [void][System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
+
+        $img = [System.Drawing.Image]::FromFile((Get-Item $InFile))
+
+        if ($PSCmdlet.ParameterSetName -eq 'AutoSize') {
+            [int]$Height = $Host.UI.RawUI.WindowSize.Height * ($img.Size.Width / $img.Size.Height)
+            [int]$Width = $Height * ($img.Size.Width / $img.Size.Height)
+        } else {
+            if ($null -eq $Height -or $Height -eq 0) {
+                [int]$Height = $Width * ($img.Size.Height / $img.Size.Width)
+            } elseif ($null -eq $Width -or $Width -eq 0) {
+                [int]$Width = $Height * ($img.Size.Width / $img.Size.Height)
+            }
+        }
+    }
+ 
+    process {
+        $bmp = New-Object System.Drawing.Bitmap($Width, $Height)
+
+        $graph = [System.Drawing.Graphics]::FromImage($bmp)
+        $graph.DrawImage($img, 0, 0, $Width, $Height)
+
+        $graph.Dispose()
+        $img.Dispose()
+
+        if ($Invert) {
+            $symbols = " .,:~+t?xmoX#M%@"
+        } else {
+            $symbols = "@%M#Xomx?t+~:,. "
+        }
+        $res = ""
+
+        foreach ($h in 1..$bmp.Height) {
+            foreach ($w in 1..$bmp.Width) {
+                $px = $bmp.GetPixel($w - 1, $h - 1)
+                $brightness = (0.2126 * $px.R + 0.7152 * $px.G + 0.0722 * $px.B)
+
+                if ($brightness -le 15) { $res += $symbols[0] + " " } 
+                elseif ($brightness -le 31) { $res += $symbols[1] + " " }
+                elseif ($brightness -le 47) { $res += $symbols[2] + " " }
+                elseif ($brightness -le 63) { $res += $symbols[3] + " " }
+                elseif ($brightness -le 79) { $res += $symbols[4] + " " }
+                elseif ($brightness -le 95) { $res += $symbols[5] + " " }
+                elseif ($brightness -le 111) { $res += $symbols[6] + " " }
+                elseif ($brightness -le 127) { $res += $symbols[7] + " " }
+                elseif ($brightness -le 143) { $res += $symbols[8] + " " }
+                elseif ($brightness -le 159) { $res += $symbols[9] + " " }
+                elseif ($brightness -le 175) { $res += $symbols[10] + " " }
+                elseif ($brightness -le 191) { $res += $symbols[11] + " " }
+                elseif ($brightness -le 207) { $res += $symbols[12] + " " }
+                elseif ($brightness -le 223) { $res += $symbols[13] + " " }
+                elseif ($brightness -le 249) { $res += $symbols[14] + " " }
+                else { $res += $symbols[15] + " " }
+
+            }
+            $res += "`n"
+        }
+    }
+ 
+    end {
+        $BitMap.Dispose()
+        Remove-Item $tempFile -Force
+
+        $res
+    }
+}
\ No newline at end of file