Indicates whether to make shadow edges soft(blurred). 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2013 
Syntax
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions InvalidOperationException | When setting this property: The RenderingQualitySettings does not use custom quality currently. To use custom quality, set RenderingQuality property to RenderingQuality.Custom. |