Filtering

 

 

Filtering options allow you to smooth the entire mesh or selectively target specific areas based on particle velocities using the Filtering Mask. Without the mask, the entire water surface would be smoothed, even in areas where detail is needed. Since the most detail is typically found in regions of high liquid velocity, applying a velocity-based filter mask helps retain detail in those areas.

 

Smooth filter and mask example video

 

 

Rendering Only – Once you have finished filtering setup, enable this option to improve viewport performance and minimize memory consumption.

 

Smooth

Mean… – Choose between three filtering options: Mean, Gaussian and Median. Each option will result in smoother surface but at the expense of details.

 

Kernel Radius – Higher values will result in a smoother surface. The mean filter is the slowest, and high values can significantly impact meshing speed.

 

Use Mask – Enable the Mask option to vary the filter strength based on velocities, which will preserve detail in areas of high velocity.

 

Mask Alpha – Blend between smoothed and original values using this mask, which can be animated. This is useful for generating a completely smooth water surface before object impact or in similar situations. In regions where the mask or alpha value is zero, no smoothing will be applied.

 

 

Mask

Display Mask – Displays the smoothing mask directly on the mesh as a color gradient where red values represent the strongest mask value and blue is the weakest.

 

Min. Velocity – Minimum velocity value where mask strength will be the strongest.

 

Max. Velocity – Maximum velocity value where mask strength will be the weakest

 

Smooth Mask – Enable this option to apply smoothing to the mask itself. If there is an abrupt transition between the mask and the unsmoothed mesh, use this option to create a gradual transition.