Wave Object

The Wave object generates wave-like motion in conjunction with any of the X-Particles fluid solvers, Fluid FX, PBD Fluid and the FLIP Domain. In the viewport the object appears like this:

The wave deformation is shown by the blue plane and the direction of travel by the arrow.

Note that the fluid simulation must be enclosed by the yellow box which represents the wave solver for it to have an effect.

Effects like this simple animation are then possible:

Interface

The object's interface looks like this:

For the 'Groups Affected' and 'Falloff' tabs, and for the buttons at the bottom of the interface, please see the 'Common interface elements' page.

Parameters

Object tab

Speed

This is the speed of movement of the wave in the direction shown by the arrow in the solver.

Strength

The strength of the wave, which is directly related to the wave height.

Falloff

To see this parameter, click the small black arrow next to the 'Strength' label.

This spline setting can be used to alter the wave strength over the length of the simulation. For example, if you set the right-hand point in the spline to zero, the wave effect will reduce as the fluid particles travel the length of the fluid solver.

Min, Max

These controls can be used to set the size of the solver box. You can also use the six sizing handles on the box to resize it if you don't need to set a precise size.

Time Scale

This parameter controls the animation speed of the noise used to generate the waves. If it is set to zero, no animation occurs and the wave will not appear to move.

Scale

This scales the noise across the X or Z axes (the Y axis is not used). Increasing these values will have the effect of smoothing the waves out along that axis. Altering the Z axis scale effectively changes the wavelength of the waves. Reducing the X axis scale increases the chaotic behaviour of the wave.

Noise Type

This drop-down menu enables the selection of one of the standard noise types in Cinema 4D.

Low Clip, High Clip

These controls clip the maximum and minimum wave heights. You may see flat plateaus on the top and/or bottom of the wave pattern if these are changed from their defaults.

Brightness

This setting alters the brightness of the sampled noise, which will alter the strength of the effect. Unlike the 'Strength' parameter, this will raise or lower the height of all particles in the simulation. Be very careful with this setting, small changes are more effective than large ones.

Contrast

Reducing the contrast will reduce the difference between peaks and troughs in the wave. If set to zero, there will be no waves at all. If it is reduced below zero, the wave pattern will be inverted.

Display tab

Draw Type

This only affects the wave deformation display in the viewport. It has no effect on the final result. The options are:

None

The wave deformation is not show.

Line

The deformation is shown as a series of lines, the length of the line representing the amount of deformation at that point.

Arrow

As for the 'Line' display, but the arrow also shows the direction of deformation.

Surface

The deformation is shown as a solid object deformed by the wave. This is the default setting.

Grid

Instead of a solid plane, and grid is shown.

Plane

The deformation is represented by colour change on the surface of a flat (non-deformed) plane.

Colour

This gradient gives the colours used to represent the height of the deformation. The greater the height, the more the colour used moves towards the right-hand end of the gradient.

Slices

You can increase this value to see multiple examples of the deforming surface, should you need to do so. It has no effect on the final result.

Grid Spacing

This is also for visual display only. It determines the grid size used in the display. The higher the value, the coarser the grid (so for example, if you choose the 'Arrow' display type, increasing either value means you will see fewer arrows - but the effect on the fluid is unchanged.