Get Alpha

Overview

The Get Alpha Node.

Get Alpha returns the alpha value of the color space of an Object in a Scene. The Object ID is given as input to the Node.

The Get Alpha Node only works with Objects that have Attributes from the Sprite category, such as List, Image Sequence, Web Sprite, Sprite, and Text.

Attributes

Attribute	Type	Description
Object	ObjectID	The Object, whose Alpha Attribute value you wish to return, if one is not provided in the Object ID Socket.

Inputs

Input	Type	Description
Pulse Input (►)	Pulse	A standard Input Pulse, to trigger the execution of the Node.
Object ID	ObjectID	The Object whose Alpha Attribute value you wish to return.

Outputs

Output	Type	Description
Pulse Output (►)	Pulse	A standard Output Pulse, to move onto the next Node along the Logic Branch, once this Node has finished its execution.
Alpha	Float	The alpha value of the Object.

See Also

• Set Alpha

External Links

• Alpha compositing on Wikipedia.