first commit

sample2.ps1

@@ -0,0 +1,51 @@
+Add-Type -AssemblyName PresentationCore,WindowsBase
+
+$path = 'c:\Users\Administrator\Documents\PaaS\photobooth\src\assets\1.png'
+$fs = [System.IO.File]::OpenRead($path)
+$decoder = [System.Windows.Media.Imaging.BitmapDecoder]::Create(
+    $fs,
+    [System.Windows.Media.Imaging.BitmapCreateOptions]::None,
+    [System.Windows.Media.Imaging.BitmapCacheOption]::OnLoad
+)
+$frame = $decoder.Frames[0]
+$w = $frame.PixelWidth
+$h = $frame.PixelHeight
+$stride = $w * 4
+$bytes = New-Object byte[] ($stride * $h)
+$frame.CopyPixels($bytes, $stride, 0)
+$fs.Close()
+
+# Sample first slot to see what color it has
+Write-Host "=== Sampling actual photo slot colors ==="
+Write-Host "`nSlot 1 (Y=250, various X):"
+$y = 250
+for ($x = 100; $x -le 500; $x += 50) {
+    $i = ($y * $stride) + ($x * 4)
+    $b = $bytes[$i]; $g = $bytes[$i + 1]; $r = $bytes[$i + 2]
+    $light = if ($r -gt 180 -and $g -gt 180 -and $b -gt 180) { "WHITE-ish" }
+    elseif ($b -gt ($r + 20) -and $b -gt ($g + 20)) { "BLUE-ish" }
+    else { "OTHER" }
+    Write-Host "  x=$x: RGB($r, $g, $b) = $light"
+}
+
+Write-Host "`nSlot 2 (Y=700, various X):"
+$y = 700
+for ($x = 100; $x -le 500; $x += 50) {
+    $i = ($y * $stride) + ($x * 4)
+    $b = $bytes[$i]; $g = $bytes[$i + 1]; $r = $bytes[$i + 2]
+    $light = if ($r -gt 180 -and $g -gt 180 -and $b -gt 180) { "WHITE-ish" }
+    elseif ($b -gt ($r + 20) -and $b -gt ($g + 20)) { "BLUE-ish" }
+    else { "OTHER" }
+    Write-Host "  x=$x: RGB($r, $g, $b) = $light"
+}
+
+Write-Host "`nSlot 3 (Y=1250, various X):"
+$y = 1250
+for ($x = 100; $x -le 500; $x += 50) {
+    $i = ($y * $stride) + ($x * 4)
+    $b = $bytes[$i]; $g = $bytes[$i + 1]; $r = $bytes[$i + 2]
+    $light = if ($r -gt 180 -and $g -gt 180 -and $b -gt 180) { "WHITE-ish" }
+    elseif ($b -gt ($r + 20) -and $b -gt ($g + 20)) { "BLUE-ish" }
+    else { "OTHER" }
+    Write-Host "  x=$x: RGB($r, $g, $b) = $light"
+}