Brightness variation ability

Will be nice if redshift can execute custom command every time as doing screen adjusting, and can send parameters into it such as current sun position or color temperature. To change wallpapers for example.

Hi Martini.

I've just written a patch to set different brightness for day and night. Currently testing it (seems to work fine) and trying to find a way to submit it (harder!)

Oh well, since Jon is subscribed to this, here's my patch:
http://codepad.org/rbdrWcrb

It adds the support of "-b DAY:NIGHT" to set the brightness. "-b N" (a single value without any ":") is still supported.

Cool! It's a very good news!

Thanks Olivier, your patch looks pretty solid. I'm wondering if calculate_temp_and_brightness() could be replaced by a single method (called twice) to do the interpolation? Line 186 in the patch would then be something like:
int temp = (int)calculate_interpolated_value(elevation, temp_day, temp_night);
float brightness = calulate_interpolated_value(elevation, brightness_day, brightness_night);
IMO that would be cleaner, and less code I think.

Hi Jon, glad to hear you like the patch. Yes, the code will probably look a bit better with a calculate_interpolated_value() function, especially if we extend the patch to support gamma interpolation too ;) (not sure if I need that yet...)

I'm not gonna try this right now (time to sleep!) but if you don't do it yourself I can do it tomorrow.

Here is the new patch:
http://codepad.org/QXOIvLcp

I've committed this to trunk.

Great! Thanks Jon.