Over

Function
The Over function is the main compositing node of Shake. This function places one image over another, according to the matte of the foreground image. Images are assumed to be premultiplied. You can use a MMult on an input node if it is not premultiplied, or you can toggle the preMultiply parameter to 1.

Parameters
Type
Defaults
Function
clipMode
int
 1 Toggles between foreground (0) and background resolution (1)
preMultiply
int
 0 When this is on (1), the foreground image is multiplied by its alpha mask. If it is off (0), it is assumed the foreground image is pre-multiplied.
addMattes
int
 0 When this is toggled on (1), the mattes are added together for the composite.


Synopsis

image Over( 
   image Foreground, 
   image Background, 
   int clipMode, 
   int preMultiply,
   int addMattes

);


Script

image = Over( 
  Foreground, 
  Background, 
  clipMode, 
  preMultiply, 
  addMattes 
);


Command Line

shake -over image clipMode preMult

See Also
Under, Screen, Inside, Atop