# 验证轮盘中心文本居中：标题像素包围盒应关于画布中心 (268,268) 对称，且状态间完全一致
$ErrorActionPreference = 'Stop'
Add-Type -AssemblyName System.Drawing

function Measure-Hub($path, [string]$mode) {
    $bmp = [System.Drawing.Bitmap]::FromFile((Resolve-Path $path))
    $cx = 268; $cy = 268; $hubR = 54
    $darkN = 0; $darkX = 0.0; $darkY = 0.0
    $darkMinX = 9999; $darkMaxX = -1; $darkMinY = 9999; $darkMaxY = -1
    $grayN = 0; $grayX = 0.0; $grayY = 0.0
    for ($y = $cy - $hubR; $y -le $cy + $hubR; $y++) {
        for ($x = $cx - $hubR; $x -le $cx + $hubR; $x++) {
            $dx = $x - $cx; $dy = $y - $cy
            if ($dx * $dx + $dy * $dy -gt $hubR * $hubR) { continue }
            $px = $bmp.GetPixel($x, $y)
            if ($px.A -lt 200) { continue }
            $sum = $px.R + $px.G + $px.B
            if ($mode -eq 'light') {
                if ($sum -lt 330) {
                    $darkN++; $darkX += $x; $darkY += $y
                    if ($x -lt $darkMinX) { $darkMinX = $x }; if ($x -gt $darkMaxX) { $darkMaxX = $x }
                    if ($y -lt $darkMinY) { $darkMinY = $y }; if ($y -gt $darkMaxY) { $darkMaxY = $y }
                }
                elseif ($sum -ge 300 -and $sum -le 420) { $grayN++; $grayX += $x; $grayY += $y }
            } else {
                if ($sum -gt 560) {
                    $darkN++; $darkX += $x; $darkY += $y
                    if ($x -lt $darkMinX) { $darkMinX = $x }; if ($x -gt $darkMaxX) { $darkMaxX = $x }
                    if ($y -lt $darkMinY) { $darkMinY = $y }; if ($y -gt $darkMaxY) { $darkMaxY = $y }
                }
                elseif ($sum -ge 430 -and $sum -le 560) { $grayN++; $grayX += $x; $grayY += $y }
            }
        }
    }
    $bmp.Dispose()
    $bboxCX = if ($darkN -gt 0) { ($darkMinX + $darkMaxX) / 2.0 } else { -1 }
    Write-Output ("  TitlePixelCount={0}  BboxX=[{1},{2}] BboxCenterX={3} (期望268)  BboxY=[{4},{5}]" -f $darkN, $darkMinX, $darkMaxX, [Math]::Round($bboxCX, 2), $darkMinY, $darkMaxY)
    Write-Output ("  HintPixelCount={0}  HintCenterX={1} (供参考)" -f $grayN, $(if ($grayN -gt 0) { [Math]::Round($grayX / $grayN, 2) } else { -1 }))
}

foreach ($file in 'wheel-light.png', 'wheel-light-hover.png') {
    Write-Output "=== $file ==="
    Measure-Hub "artifacts\$file" 'light'
}
foreach ($file in 'wheel-dark.png', 'wheel-dark-hover.png') {
    Write-Output "=== $file ==="
    Measure-Hub "artifacts\$file" 'dark'
}