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garbanzo

Posts: 318
Filters: 58
Anybody know how to cut the work field in half without using a gradient? (half black and half white for example)

Thanks!
Posted: August 23, 2007 7:48 am   Details E-Mail
Kraellin
Kraellin

Posts: 12749
Filters: 99
try a step curve with a tone curve (if i'm understanding what you're after here.).
If wishes were horses... there'd be a whole lot of horse crap to clean up!

Craig
Posted: August 23, 2007 1:49 pm   Details E-Mail
StevieJ
Designer/Artist

Posts: 11264
Filters: 163
Yeak, I would say the same thing.....desaturate and use either linear or step to create a straight vertical curve.....
Steve

"Buzzards gotta eat...same as worms..." - Clint :)
Posted: August 23, 2007 1:55 pm   Details E-Mail
ssamm
Posts: 364
Filters: 21
I think you'll still need a gradient as a source for the tone curve...

Another method without a gradient (but is more complex) could be to use a perlin noise component with a very large scale and a stretch value of 100 (and angle of 90 if wished) and plug that into a threshold adjustment (with smooth = 0). Here you'll have to adjust the threshold amount and perlin noise parameters to get the black vs. white to cut exactly in half.

What's the matter with using a gradient, though?
Posted: August 23, 2007 3:14 pm   Details E-Mail
garbanzo

Posts: 318
Filters: 58

i want to be able to do this with an image of any dimensions, to cut it in half vertically or horizontally...

i've seen a snippet out there which makes a gradient that's not restricted to square images, maybe i'll just use that.
Posted: August 23, 2007 11:47 pm   Details E-Mail
ssamm
Posts: 364
Filters: 21
Yeah, the gradients do go weird on non-square images. And uberzev's Proportional Gradient snippet is a clever solution for the problem.
Posted: August 24, 2007 9:09 am   Details E-Mail

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