GraphiteEditor
Create Color from Component Values
A node that takes four numbers (int or float, doesn't matter) as R, G, B, and A and outputs a color is needed for situations where color is driven mathematically by other elements.
The best workaround I have found when alpha isn't needed is to create three gradients, one for Black->Red, Black->Green, and Black->Blue. I can then sample those gradients and use them to produce three duplicates of the geometry, each representing one color channel. Finally, I can blend them using the Lighten blendmode to get the composite image.
My thoughts on this posted in Discord which can be used to adapt this into an implementation:
You could add it as like a Construct Color node which has modes for Grayscale, RGB, HSV, CMYK, Lab, etc. from a dropdown menu (you can reference other code examples) and it can take the different inputs for each of those parameters to produce a color as output.
