thejeran / blender-colormaps Goto Github PK

Hi, I can't get this add-on to install. When I install the .zip file in Blender nothing happens. When I opened the .zip, it only shows the Readme file. I think I executed the other module correctly, it said it was successfully installed, anyway. This is my first time installing something with python code. Can you provide a little more detail about the installation of this add-on?

Thank you

This project has no script file but a README.md.

Is this a missing issue or is the script not ready yet?

The effects posted in the README look pretty cool, I'm very looking forward to try it.

Hello,

Thank you for this helpful project.
For at least some of the colormaps, the colormap obtained results in kind of pastel colors instead of true colors.
For example with the viridis colormap, here is the true colormap :

However, when generated with this addon, it gives the left color ramp on the following image. The color ramp of the right is with the true colours picked on the true colormap.

I understand that the colormaps comes directly from matplotlib but it appears that the colors are not really the one expected. Do you know what is the issue ?

Thank you

Hi,
I found the add-on after implementing something similar myself, nice job.

Something that might be useful to you is the python package colormaps (I'm not the author):
https://github.com/pratiman-91/colormaps/tree/main/colormaps

It integrates colormaps from many other libraries that are easy to access and use.

A simple example:

import colormaps as cmaps

def create_color_ramp(nodes, colormap_name, location= (0,0), steps=21):
    # Create color ramp
    color_ramp = nodes.new(type="ShaderNodeValToRGB")
    color_ramp.color_ramp.color_mode = 'HSV'

    color_ramp.location = location

    # Change color ramp
    elements = color_ramp.color_ramp.elements
    elements.remove(elements[0])

    elements[0].position = 0

    # Get colormap based on name
    cmap = getattr(cmaps, colormap)
    step_length = 1.0/steps
    for i in range(1, steps+1):
        pos = step_length*i
        color_ramp.color_ramp.elements.new(pos)
    
    # Set color of elements
    for element in elements:
        element.color = cmap(element.position)
    
    return color_ramp