After three years, a new update!
GradientTool Version 0.8.2.1
New feature:
- Gamma corrected RGB gradients, i.e. RGB gradients with uniform brightness
Changes:
- Value-corrected RGB gradients are now the default.
- The default gradient has been changed to red → cyan to demonstrate RGB value correction.
- The tab pages in the HDMA configuration dialog can now be used without HDMA code generation.
And in case anyone was wondering, now you can use the ranges 0-240 and 0-255. That was added in version 0.8.1 in May 2012.
To add more content to this post, here is a comparison of each of the colourspaces:
In the first case, V correction and L correction have the same result, because both colors have the same V and L values.
In the second case, L correction does nothing, because the L of both colors is 50%, so they are desaturated to gray in the middle. V correction desaturates to white.
In the rather odd case on the left, L correction introduces a problem absent from the RGB gradient, because the L in the middle forced down from 75% to 50%.
The gradient on the right is a more useful gradient. The V-corrected gradient is brighter than the L-corrected and uncorrected gradients. The HSV and HSL gradients are more colourful than the RGB gradients. In this case, HSL colourspace creates brighter colours than HSV, as it tends to with practical gradients that would actually be used in a hack.