AddShadow

Function
The AddShadow function takes the alpha channel of an image, and then colors, blurs, fades, and moves the alpha channel. Next, the alpha is composited under the input, creating a cheap shadow effect. It differs from DropShadow in that it already composites the shadow under the element; DropShadow creates an entirely new shadow element that can be manipulated separately.

Parameters
Type
Defaults
Function
x,yOffset
float
 40,-40 The amount of pixels the shadow is moved away from its origin.
fuzzyness
float
 60 The amount of, um, fuzzyness on the shadow.
r,g,bShadow
float
 .01,.02,.05 Color of the shadow
opacity
float
 .6 A fade value on the shadow, between 0 and 1

Synopsis

image AddShadow( image, 
  float xOffset, 
  float yOffset, 
  float fuzzyness, 
  float rShadow, 
  float gShadow, 
  float bShadow,          
  float opacity 
);


Script

image = AddShadow( image, xOffset, yOffset, 
        fuzzyness, rShadow, gShadow, bShadow,
        opacity );


Command Line

shake -addshadow xOffset yOffset fuzzyness etc...


Examples

shake man.iff -addsh 20 -20 10 .05 0 .1 .7 -over hallway.jpg

See Also
DropShadow