Type Property 型プロパティ

invertsAlpha

An option that causes the filter to invert the alpha of the shadow.

Declaration 宣言 

static var invertsAlpha: GraphicsContext.ShadowOptions { get }

Discussion 議論

You can create an “inner shadow” effect by combining this option with shadowAbove and using the sourceAtop blend mode.

See Also 参照

Getting Shadow Options

static var disablesGroup: GraphicsContext.ShadowOptions
An option that causes the filter to composite the object and its shadow separately in the current layer.
static var shadowAbove: GraphicsContext.ShadowOptions
An option that causes the filter to draw the shadow above the object, rather than below it.
static var shadowOnly: GraphicsContext.ShadowOptions
An option that causes the filter to draw only the shadow, and omit the source object.