| Invert |
Function
The Invert function inverts the color curve, so white becomes black and black
becomes white. A predominantly yellow image becomes predominantly blue if
the red, green, and blue (rgb) channels are selected in the channels field.
Invert also works on the Z channel, but assumes the Z is normalized, for example, between 0 and 1. If this is not the case, you have an unpredictable result. If you need to invert a nonnormalized Z channel, use ColorX with a formula similar to the following in the Z channel:
[MaxZRange]-z
|
Parameters
|
Type
|
Defaults
|
Function
|
| channels |
string
|
"rgba"
|
The channels you wish to invert. You can use r,g,b, a,
and/or z. To use multiple channels, just list them out: This will invert the red, green and Z channels. |
Synopsis
image Invert( image, const char * channels );
Script
image = Invert( image, "channels" );
Command Line
shake -invert channels