Right-Click Select This is a read-only archive
← All ideas
  • Published 27 Mar 2020

Opposite Hue button Propose

You could add a button to select the opposite color to the current color.

This is easy to calculate. It can be done with current_value%1 but it doesn't support module in the input float hue ui property, just support add and subtract operations.

Another way to go is: if the current value is less than 0.5, add to the current value 0.5 to the hue value, but if the current value is more or equal to 0.5, then we subtract 0.5 to the hue value.

With a simple button would be much simpler, here my mockup:

85.7%

Development Status: Open

Upvote 6 Downvote 1
zebus3d
27 Mar 2020

10 Comments

WiresoulStudio

Of course, the modulo works. Just write there (current_value+0.5)%1 and it works as expected. But the one-click way to invert the color would be welcomed.

2
zebus3d Author

* @WiresoulStudio * current_value%1 dont work. You dont need "+0.5" if you use the module.

LilacDogoo

"Opposite Color" is a little vague.
I think calling it "Opposite Hue" would be better.

1
zebus3d Author

It's close now, although I know my patch will never be accepted by my amateur code. But as a proof of concept I think it's understood.

zebus3d Author

My Small Progress in C:

zebus3d Author

I started writing a patch, but my level of C is not very good.
If anyone who knows more wants to try, their help is welcome.

JonatasAmaral

a small script for that if it helps you gets the value in the mean time you will have to put the color python data path though, so may not be so useful after all. but this one lets you get the opposite, thirds, or whatever number you desire: 

import bpy
from mathutils import Color

# the color to change
col = bpy.data.materials['Material'].node_tree.nodes["Principled BSDF"].inputs[0]

# a Color object to calculate the HUEs
C = Color()
C.r = col.default_value[0]
C.g = col.default_value[1]
C.b = col.default_value[2]

# nº of circle splits: 2 splits it in half, getting the oposite color, 3 get a third, etc.
n=12

C.h = (C.h+(1/n))%1

col.default_value = C[:] + (1.0,)

hope it help a bit, bye

zebus3d Author

* @Jonatas Amaral * Yes, I also made a script for that, but the most useful and practical would be a button that includes blender by default.

zebus3d Author

* @Jonatas Amaral * In case you're interested in the script I was doing:
pastebin.com/ebrzwVyj

JonatasAmaral

* @zebus3d * Eah, i was exactly going to ask that when reading the te msg up there, but it's already down here, so thank you for that.

1