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TASK 51 slice 5: webcam Background section in the Layers properties — Remove/Blur PillToggles (radio-exclusive) + Strength slider; strength changes never blank the webcam (new variant inherits the same-effect frame + bitmap). TASK 51 built (Unit: bg-effects UI)

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gramps
2026-10-09 10:31:11 -07:00
parent de22983b36
commit 352f117cb2
11 changed files with 169 additions and 49 deletions
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ViewModels/MainViewModel.Webcam.cs
+9 -2
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@@ -244,11 +244,18 @@ public partial class MainViewModel
config.PropertyChanged += OnWebcamConfigEffectChanged;
var key = EffectKeyFor(config);
var bitmap = _cameraManager.GetPreviewBitmap(_webcam.DeviceId, key);
if (bitmap != null || key.Effect != BackgroundEffect.None)
config.VideoImageSource = bitmap;
// A strength change within the same effect keeps showing the previous variant's
// last frame until the new one renders (no blank flicker while dragging the slider);
// switching INTO an effect shows nothing first, so Remove never flashes the room.
var sameEffect = _shownEffect.TryGetValue(config, out var shown) && shown.Effect == key.Effect;
_shownEffect[config] = key;
if (bitmap != null) config.VideoImageSource = bitmap;
else if (key.Effect != BackgroundEffect.None && !sameEffect) config.VideoImageSource = null;
}
}
private readonly Dictionary<WebcamSceneConfig, WebcamEffectKey> _shownEffect = new();
private void OnWebcamConfigEffectChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName is not (nameof(WebcamSceneConfig.BackgroundEffect) or nameof(WebcamSceneConfig.BackgroundStrength)))