Page History

Expand – Opens a floating dialog that contains the selected rollout and automatically folds the command panel rollout.

? – Opens up the help documents for the Liquid Splash/Mist.

Enable | splashes – Enables the birth and simulation of Splash and Mist particles.

Splash to Mist | spsplit – Controls how fast the splash particles are converted into mist. This value determines the portion of the splash volume that is turned into mist after traveling one meter (3.3 feet). During its motion, a splash particle constantly produces mist particles, decreasing the volume of the splash. When the entire volume is exhausted, the splash particle disappears. This parameter controls how fast this happens. If the value is 0.0 the mist is not simulated at all, and if you restore a simulation containing mist, the mist will be deleted.

Mist Amount | spmistmult – Controls the amount of mist. This value determines how many mist particles are spawned by a single splash particle.

Birth Volume | usemistbconfgeom, mistbconfgeom  – When enabled, allows the mist to be born naturally by the simulation only inside a specified geometry object. The mist born inside the Birth Volume can travel outside the volume without a problem. The difference between this approach and spawning mist inside a volume manually from a Source object is that using a Birth Volume, the mist birth will follow the simulation criteria of the simulation and will look and behave more naturally.

Volume Fade Dist | mistbconfgeomfade – Controls how far the mist particles will spawn around the specified Birth Volume geometry object.

Foam on Hit Amount | sp2foam – Controls how many foam bubbles are created when a single splash particle enters the liquid volume. This parameter works in terms of probability, so non-integer values can be used. For more information, see the Foam on Hit example below. 

Min. Age (sec) | spfohminage – Minimum age (in seconds) for foam production. Only splash particles with a particle age above this limit will produce foam when they hit the liquid surface.

Depth | fohdepth – When a splash particle hits the liquid surface and produces foam, this parameter specifies how far in front of the splash particle the new foam particles will be born. This parameter is used mostly to create underwater foam that will be colored by the fog color of the liquid.

Splash Split | splash_split_to_splash – Controls how quickly the flying splash particles split into smaller ones, creating a trail. If you set it to 0.0, the splash particles would not split at all.

Mist Air Drag | mistdrag – The air friction of the mist. This value determines not only how fast the speed decreases, but also the influence of the wind. The larger this value, the larger the wind's influence.

Max Outside Age | timeout – If a particle exits the grid and its age (in seconds) exceeds this parameter, it will be killed instantly. This parameter affects both splash and mist. Note that this is not the time since the particle exited the grid, but the time since the particle was born.

Initial Vel. Mult. | spvmult – When the splash particles are born, they are initialized with the velocity of the nearest liquid multiplied by this value. This parameter greatly affects the general appearance of the splash. When it is below 1, the liquid droplets fly in front of the splash and produce a clearly visible track.

Initial Vel. Rand. | spvrand – Controls the randomness of the velocity direction when splash particles are born. This affects the birth of splashes both by liquid particles, and by splitting of splash particles into smaller splash particles. The velocity is randomized equally in all directions, not just in the direction of splash travel, or perpendicular to it.

Liquid-Like | spstick – Controls the ability of the splash particles to stick to each other, forming different strings and tentacles, so the splash behaves more like liquid and blends better with the behavior of the liquid mass. The higher this value, the larger the acceleration needed to break the connection. Note that larger values will increase the calculation time. For more information, see the Liquid-Like example below. 

Affect Liquid | affectlq – Controls the conversion of liquid to splash, and splash back into liquid. When this value is not zero, the splash birth causes some of the liquid to disappear, and then when the splash enters the liquid the splash particles are replaced by liquid. A value of 1 with splashes and mist enabled produces a physically accurate simulation where liquid, splash and mist are constantly converted into one another, and the sum of all three at any point during the simulation is the same as the original liquid. This option is good for waterfall simulations but not so much for ocean simulations where you want the ocean surface to be smooth, as it would create bumps in the liquid mesh where splashes fall into the liquid.