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Like any other physical node, the "Waterline" emitter provides a "Maxwell Render" tab under "Node Params".
Radius mode
For the start, the most important thing is to specify the particles' size
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MultiPoint
In this simulation, the number of particles is rather small. The peak was just 1.1 million and this is normally not enough to get a good render.
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- "MultiPoint" is the number of extra particles per existing particles (does not work with "Radius mode" set to "Use particle radius").
- "Dispersion" describes the size of a virtual sphere around a particle, where the new particles will be added.
- Start with "Dispersion" values close to "Radius factor", e.g. 0.02 to avoid a "fluffy" look.
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