I've tried some plugins and scripts for light rays, but can not find what I want. The closest thing I've found is in G'MIC, but the filter has a problem, there is only a point source of light.
For example I want starting from an image like this:
Generating light beams. I have used the filter "wind" in G'MIC and then applied blur:
Is ok but I wish I could choose that the beams are conical rather than cylindrical:
I must say I've tried applying the filter "Wind" with different angles and then combining the layers. But where the rays overlap the result is not good.
It would be nice to have a plugin that starting from an image with a certain amount of white dots or circles, to make light ray effects being able to choose length, angle, single light source or light source at each white point or circle. Cylindrical or conical beams, etc.