Brightness
Function
This function is simply a multiplier on the RGB channels. It differs from Fade
in that Fade effects the Alpha channel as well. If you want individual
channel control, use Mult.
You can also use this to convert your image to a single channel alpha image by using a brightness of 0.
Parameters
|
Type
|
Defaults
|
Function
|
value |
float
|
1
|
The brightness factor. Greater than 1 increases brightness, less than 1 darkens it. A value of 0 means complete black, and will in fact reduce your image to a single channel alpha image. |
Synopsis
image Brightness( image, float value);
Script
image = Brightness( image, value);
Command Line
shake -brightness value
Examples
shake lisa.iff -bri .2
shake lisa.iff -bri 2
shake lisa.iff -bri "Linear(0,0@1,3@20)" -t 1-20