Specifies the smoothness of shaded, rendered, and hidden line-removed objects.
Supported platforms: Windows only
VBA:
object.RenderSmoothness
Type: DatabasePreferences
The object this property applies to.
Read-only: No
Type: Double
The valid range is 0.01 to 10.0.
The initial value for this property is 0.5. To improve performance, set this value to 1 or less when drawing.
VBA:
Sub Example_RenderSmoothness()
    ' This example returns the current setting of
    ' RenderSmoothness. It then changes the value, and finally
    ' it resets the value back to the original setting.
    
    Dim currRenderSmoothness As Double
    Dim newRenderSmoothness As Double
    
    ' Retrieve the current RenderSmoothness value
    currRenderSmoothness = ThisDrawing.preferences.RenderSmoothness
    MsgBox "The current value for RenderSmoothness is " & currRenderSmoothness, vbInformation, "RenderSmoothness Example"
    
    ' Change the value for RenderSmoothness
    newRenderSmoothness = 2.5
    ThisDrawing.preferences.RenderSmoothness = newRenderSmoothness
    MsgBox "The new value for RenderSmoothness is " & newRenderSmoothness, vbInformation, "RenderSmoothness Example"
    
    ' Reset RenderSmoothness to its original value
    ThisDrawing.preferences.RenderSmoothness = currRenderSmoothness
    MsgBox "The RenderSmoothness value is reset to " & currRenderSmoothness, vbInformation, "RenderSmoothness Example"
End Sub
Visual LISP:
(vl-load-com)
(defun c:Example_RenderSmoothness()
    ;; This example returns the current setting of
    ;; RenderSmoothness. It then changes the value, and finally
    ;; it resets the value back to the original setting.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
    (setq preferences (vla-get-Preferences doc))
    
    ;; Retrieve the current RenderSmoothness value
    (setq currRenderSmoothness (vla-get-RenderSmoothness preferences))
    (alert (strcat "The current value for RenderSmoothness is " (rtos currRenderSmoothness 2)))
    
    ;; Change the value for RenderSmoothness
    (setq newRenderSmoothness 2.5)
    (vla-put-RenderSmoothness preferences newRenderSmoothness)
    (alert (strcat "The new value for RenderSmoothness is " (rtos newRenderSmoothness 2)))
    
    ;; Reset RenderSmoothness to its original value
    (vla-put-RenderSmoothness preferences currRenderSmoothness)
    (alert (strcat "The RenderSmoothness value is reset to " (rtos currRenderSmoothness 2)))
)