“Triangle” is an area emitter. Emitters define the point of particle creation in 3D space, while the particles are part of the "Fluid" container. Emitters can be scaled, rotated, and translated like objects; an arrow indicates the direction of emission.
RealFlow Scene
In RealFlow | Maya it is possible to use multiple "Scene" trees in the same project. To link the emitter to a "Scene" node right click on the field, click on "Set Scene" and choose an entry from the appearing list.
Fluid
To link the emitter to a "Fluid" right click on the field, click on "Set Fluid" and choose a fluid container from the appearing list. An emitter can be connected to one fluid container only.
To learn more about how to link RealFlow scene elements and make them interact take a look at the → "Manual Linking" page with examples.
Emitter Type
Toggle the emitter type with this drop-down menu. The following parameters and the viewport representation will be updated according to your selection. Bear in mind that type changes will change the emitter's and fluid's behaviour completely.
Volume
This feature creates a defined volume of particles. The size of this volume is defined by the emission area and the value entered here.
Speed
Here the particles' initial speed is defined in metres per second. Higher values will generate more particles per frame. The number of emitted particles also depends on the fluid's “Resolution” settings. A value of 0.0 stops the emission of particles.
Vertical Random
To avoid regular emission, it is possible to randomly displace the particles. The parameter accepts any positive value and 0.
Horizontal Random
To avoid regular emission, it is possible to randomly displace the particle. The parameter accepts any positive value and 0.
Side Emission
Normally the particles are poured out along the emission axis, but it is possible to emit the particles from the emitter's edge. Then, the triangle's inner area remains empty.