This is a three-dimensional emitter type and you can set values for all three coordinates. Please note that the scale values are linked and it is not possible to adjust three different settings for X, Y and Z. By default the particles are emitted from the sphere’s surface, but there is also an option for filling the entire volume. In the second case, the result is identically to a “Fill Object” emitter.
Speed
As always, “Speed” sets the initial velocity of the particles at creation time. Animated “Speed” values are often used to create all kinds of interesting effects. This value is measured in metres per second [m/s].
Randomness
This parameter can be used to avoid patterns and regular structures by displacing the particles randomly at creation time.
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