This emitter creates particles and moves them through a force field along a customizable path. The path can be created in RealFlow's viewport directly, imported as a → SVG, or copied from an already existing → spline node. The spline's viewport representation is controlled with the → “Display Spline” panel. We also recommend enabling the → “Display Force Field” option for a realtime view of the daemon's forces.
Affect
With “Force” it takes a little time to display the daemon's full influence and the result is a curved stream of particles. “Velocity” directly affects the particles from the very beginning without any delay or acceleration, and you will get a linear particle stream. “Velocity” is not available for rigid/soft bodies.
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Here the particles' initial speed is defined in metres per second. Higher values will generate more particles per frame. Faster particles act with stronger forces on other particles or objects. The number of emitted particles also depends on your → “Resolution” “Resolution” settings. A A value of 0.0 disables 0 → stops the emission of particles.
Randomness
To avoid regular emission, it is possible to randomly displace the particles at creation time. Higher settings create more randomness. This parameter accepts all positive values and 0.
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A click on this button enables the “Edit” mode, indicated by a yellow frame around the viewport. While in “Edit” mode you are able to move (RW key) the control points and their handles. You also have access to a selected point's individual “@ CP” settings. Please read the → “Quick Start Workflows - Drawing and Editing Splines” chapter to learn how to shape splines.
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Click on “EDIT” and select a control point to change the parameter's settings. “@ CP radial” introduces a force around the control points.
@ CP @ CP vortex
Click on “EDIT” and select a control point to change the parameter's settings. “@ CP vortex” creates a rotational force around the spline's path. Positive values create a clockwise rotation, negative values create a counter-clockwise rotation.
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Click on “EDIT” and select a control point to change the parameter's settings. The circle around indicates the forces' scope or radius. Only particles or rigid/soft bodies inside the viewport's circles will be affected. The circles' sizes can be controlled with the yellow dot: hit the R key, select one or more dots, and move it.
@ CP speed
Click on “EDIT” and select a control point to change the parameter's settings. When the emitter is in "Axis" or "Tube" mode it is possible to define different emission speed values for every control point separately. This parameter is given in metres per second and accepts all positive values including 0.
@ CP rotation
Click on “EDIT” and select a control point to change the parameter's settings. Every control point of the emitter has a small turquoise arrow, indicating the fluid's emission direction in "Axis" and "Tube" mode. By entering a positive degree value this emission direction can be changed.
@ CP link
Every control point can be linked to another node, e.g. to animate a point's position. Normally, “Null” nodes are used for this purpose, but any other node will work as well. Simply click on “-” to open a node list.
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With “Smooth” both tangents are affected while moving a single handle. When you switch to “Broken” the tangents can be edited separately.
@ CP handle
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weighting
When set to “Even” both tangents have the same influence on the spline's curvature. With “Uneven” the tangents' influence is treated individually.