I want to have particles emitted from a line rather than a single point. ChatGPT suggested having the emitter point travel continually along the line at high speed to fake the look. But all of the expressions it gave me failed. Can this be done without an add on? Are there better ways?
So you want a line where particles emit continuously from? Of the line is to be straight, then in CC Particle World, set the producer to only have a value in X, and be zero in Y and Z.
If you're needing a bending curve, then you could either use a the above and then warp the result or you could try the include Particle Systems II and it's setting of Source Alpha Heritance. You'd draw a thin shape using a mask (a line with a little thickness) and then make an emitter bigger than it in both dimensions. The particles would only emit from the line.
You could also try Particle Playground as that can emit particles with a layer as a source.
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