math.miniapp/scripts/create-tab-icons.ps1

# Source for the committed navigation PNG assets; run from the project root.
Add-Type -AssemblyName System.Drawing
$assetDirectory = Join-Path $PSScriptRoot '../src/assets/tab'
[System.IO.Directory]::CreateDirectory($assetDirectory) | Out-Null

foreach ($kind in @('home', 'profile')) {
  foreach ($active in @($false, $true)) {
    $bitmap = New-Object System.Drawing.Bitmap 81, 81
    $canvas = [System.Drawing.Graphics]::FromImage($bitmap)
    $canvas.SmoothingMode = [System.Drawing.Drawing2D.SmoothingMode]::AntiAlias
    $canvas.Clear([System.Drawing.Color]::Transparent)
    $accent = if ($active) { '#873cff' } else { '#92929c' }
    $brush = New-Object System.Drawing.SolidBrush ([System.Drawing.ColorTranslator]::FromHtml($accent))
    if ($kind -eq 'home') {
      $roofBrush = New-Object System.Drawing.SolidBrush ([System.Drawing.ColorTranslator]::FromHtml($(if ($active) { '#ff875f' } else { '#c6b8b0' })))
      $wallBrush = New-Object System.Drawing.SolidBrush ([System.Drawing.ColorTranslator]::FromHtml($(if ($active) { '#ffe2b2' } else { '#e4dfd9' })))
      $doorBrush = New-Object System.Drawing.SolidBrush ([System.Drawing.ColorTranslator]::FromHtml($(if ($active) { '#61cbb5' } else { '#a8bfb8' })))
      $roof = [System.Drawing.PointF[]]@((New-Object System.Drawing.PointF 8, 38), (New-Object System.Drawing.PointF 40, 9), (New-Object System.Drawing.PointF 73, 38), (New-Object System.Drawing.PointF 65, 43), (New-Object System.Drawing.PointF 40, 21), (New-Object System.Drawing.PointF 16, 44))
      $canvas.FillRectangle($wallBrush, 20, 36, 42, 35)
      $canvas.FillPolygon($roofBrush, $roof)
      $canvas.FillRectangle($doorBrush, 34, 48, 14, 23)
      $canvas.FillRectangle($roofBrush, 55, 13, 7, 17)
      $roofBrush.Dispose(); $wallBrush.Dispose(); $doorBrush.Dispose()
    } else {
      $canvas.FillEllipse($brush, 27, 9, 28, 32)
      $canvas.FillEllipse($brush, 22, 28, 9, 12)
      $canvas.FillEllipse($brush, 51, 28, 9, 12)
      $canvas.FillEllipse($brush, 15, 43, 52, 42)
      $canvas.FillRectangle($brush, 15, 62, 52, 11)
    }
    $suffix = if ($active) { '-active' } else { '' }
    $bitmap.Save((Join-Path $assetDirectory "$kind$suffix.png"), [System.Drawing.Imaging.ImageFormat]::Png)
    $brush.Dispose(); $canvas.Dispose(); $bitmap.Dispose()
  }
}