Filter constructor

const Filter({ Set<SurfaceLayer> filteredLayers = BASE, Map<SurfaceLayer, double>? radiusMap, double? baseRadius, double? materialRadius, double? childRadius, bool extendBaseFilter = false, SurfaceFX effect = FX.blurry, })

🔬 Filter

A 🌟 Surface may be provided a 🔬 Filter to change filter appearance at all 📚 SurfaceLayers.

• Set<SurfaceLayer> 👓 filteredLayers determines which 📚 Layers have filters
• 📊 radiusMap or baseRadius && materialRadius && childRadius determine filter strength
• Use extendBaseFilter == true to have 📚 SurfaceLayer.BASE's filter extend to cover the Surface.margin insets.

While a new 🌟 Surface employs 🔬 DEFAULT, where 👓 filteredLayers is NONE, a new 🔬 Filter defaults 👓 filteredLayers to BASE.

• Default 📊 radius/strength is _BLUR == 4.0.
• Minimum accepted 📊 radius for an activated 📚 Layer is _BLUR_MINIMUM == 0.0003.

• ❗ See CAUTION in Surface doc.

Implementation

const Filter({
  this.filteredLayers = BASE,
  this.radiusMap,
  this.baseRadius,
  this.materialRadius,
  this.childRadius,
  this.extendBaseFilter = false,
  this.effect = FX.blurry,
});