Global Function
Declaration
func setAlpha(_ alpha: Double)
Parameters
| alpha | An alpha value (Double) in the range 0.0 to 1.0. |
Returns
-
Description
Set a alpha (transparency) value for drawing operations. A value of 1.0 is opaque, a value of 0.0 is completely transparent.
Examples
// Completely opaque (the default)
setAlpha(1.0)
// 50% transparency
setAlpha(0.5)Related
fillColor()
fillDisable()
strokeColor()
strokeDisable()
background()