RealFlow provides different channels to visualize specific properties of a fluid. These channels can be visualized in many different ways and dyed: different colours will mimic a certain behaviour or fluid type, e.g. fire or dust.
Visible
Toggle the emitterdomain's (= fluid's) visibility with this checkbox.
Show icon
Toggle the domain's viewport icon visibility here.
Display type
These are your options:
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Please also take a look at → “Basic Workflows – - Colour Gradients” to learn how to work with this tool.