I have got a fair way down the road or at least further than I have got before with generating moving light swirls. They are on a black background as this will allow me to pop them onto a bit of video and if I change the blend mode to Multiply the video should show through. I put two on this quick GIF render but will produce half a dozen separately and pop them on new video layers that way I should have more control. I did try to start with them dark and keyframe the light so they glow at the end of the cycle but it went pear shaped. I’ll have another go in blender but I should be able to do it in Photoshop by adding layer styles and keyframing them.
I would like the swirls to be flatter, more ribbon like so I can add a twist on the X-axis. I can do that by flattening the Bezier circle which is what this is, it then follows a path wot I drew but then I can’t get it to taper. There will be a way. It’s just finding the way. It works fine here with a cylinder and Blender should not be able to tell a cylinder from a squished one. It does have a posher circle called a Nurbs something. It is what CAD programmes use. I’ll give it a whirl with one of those.
That is definitely it for today. This was rendered in Blender Render I will try it in Cycles Render as I’m more familiar with adding materials in that.
The things I find to amuse me when the weather is bad. I’ll sleep on it. With a bit of luck all will be as clear as mud in the morning.