Magnetic field line issue in Unity c#,Magnetic field line in unity using c# scripting,Magnetic field line

I'm pretty sure that the lines use some kind of spline implementation between the closest opposite poles, and calculating the line positions between all the poles according to physics of magnetism. The lines in the first part are probably drawn with LineRenderer, while in the second I think the field results are written into a render texture, then drawn behind all the objects (based on the more precise results, drawn onto all pixels, and that it takes longer).

@Harinezumi ya, it can be spline implementation. but can you tell me that how this line position is calculated between poles according to physics magnetism? because if I manage all these line endpoints individually then it is taking so much time and through that, it is not coming perfectly as magnetic field line. so, is there any equation that I can apply on line renderer and which helps to generate lines using physics law.