“Bitmap” gives you the opportunity to either load a single image or an entire image sequence used as an emission mask.

Emission mask

Open RealFlow’s file browser to choose a single image or a sequence from a folder and attach it to the emitter. If you want to use an image sequence, all the other images must be stored in the same folder, contain a five-digit file padding, and share the same extension. The emitter only uses the image's purely white parts for the emission – grey shades are not considered.

File list

Here are the available options:

“Single” should be used if there is just one image you want to make emit particles.
“Sequence-end” loads a series of images and the emission will stop with the last file.
“Sequence-keep” stops with the last image, but this final bitmap will continue generating particles.
“Sequence-loop” simply creates an endless loop and once the end is reached RealFlow starts again with the first image.

Number of files

The length of an image sequence can be adjusted here by specifying the last frame’s number.

Affect

With “Viscosity” you can actively affect the fluid’s viscosity from the attached bitmap’s black and white pattern.

Val min

This is the minimum viscosity value, represented by the black pixels.

Val max

This is the maximum viscosity value, represented by the white pixels.

Volume

This feature creates a defined volume of particles. The height of this volume is defined by the value entered here. All dimensions are given in metres. By activating this option, the emitter’s speed value will be set to 0.0 automatically.

Speed

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” settings. A value of 0.0 → stops the emission of particles.

V random

To avoid regular emission, it is possible to randomly displace the particles with these functions. The value should range between 0 and 1, but can be higher, as well. “V” stands for vertical.

H random

To avoid regular emission, it is possible to randomly displace the particles with these functions. The value should range between 0 and 1, but can be higher, as well. “H” stands for horizontal.

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