Domain - UVs Mapping

In 3D programs you always need a certain projection method to apply textures on objects. The most common projection methods are spherical, flat, cylindrical, cubical and, of course, UV. UV maps use their own grid which is independent from the object, and you can transform UV polygons and vertices without changing the shape of the parent object. With RealFlow's grid fluids you can calculate displacement maps from the surface and store them as 16-bit images. This panel provides parameters to control the mapping process. Please keep in mind that these parameters are only valid for RealFlow's “Hybrido mesh” engine.

Mode

In RealFlow, textures are always created using a two-dimensional top projection method. Here, three different modes are offered: “Top projection” is the default option and uses the texture coordinates from the particles. “Top projection (Average velocity)” is very similar to “Top projection”, but the projection plane moves at the averaged speed of the fluid. The last mode is called “Top projection (Distortion free)”. This method reduces or even completely removes distortions from the texture map. The usage of this option unlocks the “@ distortion” field.

@ distortion

With this parameter it is possible to reduce the amount of distortion. It requires the “Top projection (Distortion free)” mode, is dimensionless, and ranges from 0.0 (no distortion) and 1.0 (maximum distortion).