API Documentation > CorelDRAW > 2025-v26 > EffectContour > IVGEffectContour
EffectContour.SpacingAcceleration property
Gets or sets the Spacing Acceleration
Syntax:
Property Get SpacingAcceleration() As Long
Property Let SpacingAcceleration(ByVal Value As Long)
Remarks:
The SpacingAcceleration property returns or specifies the rate of object acceleration in a contour effect. You can change the progression of the size of intermediate objects.
Examples:
The following VBA example creates a contour effect with non-uniform spacing and color transition.
Sub Test()
Dim s As Shape
Set s = ActiveLayer.CreateEllipse2(5.5, 4, 2)
s.Fill.UniformColor.RGBAssign 255, 0, 0
s.Outline.SetProperties 0.05, , CreateRGBColor(0, 255, 255)
With s.CreateContour(cdrContourOutside, 0.5, 5, , , CreateRGBColor(255, 255, 0)).Contour
  .LinkAcceleration = False
  .ColorAcceleration = 50
  .SpacingAcceleration = -50
End With 
End Sub