BlendEffect::GlobalAlpha Property

The factor of interpolation between the result of the blend operation and the original image.

Range [-2.5, 2.5], where 0.0 gives a result identical to the source image and 1.0 means the result of the blend operation is fully visible.

The result is calculated using the formula result = (1 - GlobalAlpha) * BackgroundSource + GlobalAlpha * ForegroundSource. By using values outside of the [0.0, 1.0] range one can use extrapolation to achieve additional effects on the image (such as saturation or sharpening).

public:
virtual property double GlobalAlpha {
	double get () sealed;
	void set (double value) sealed;
}