Wind Modifier

Summary

This modifier simulates the effect of wind on particle movement.

Editor appearance

This is the on-screen representation of this modifier:

Wind modifier screen display

You can rotate the modifier on any axis and the particles will be blown along the axis shown by the arrow. By default this is along the positive Z world axis.

Interface

This is the modifier's interface:

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

Parameters

Enabled

Uncheck this switch to disable the modifier.

Mode

Independent [default setting]

In this mode, the modifier will work in the same way as a standard Cinema 4D particle modifier: particles will be affected if they come into the field of effect of the modifier. X-Particle Actions have no effect on the modifier in this mode.

Action-Controlled

In this mode, the modifier will only act on a particle when told to do so by an Action. Until that point, the particle will not be affected, but once activated for a particular particle, the modifier will continue to influence it as long as it is in the field of effect of the modifier. The modifier's effect on a particle can be halted by means of another Action, if desired.

Visible in editor

This modifier has a special representation in the editor. If you don't want to see that, but still want the modifier to be active, uncheck this switch.

Wind Strength

The strength of the wind effect. Negative values are permitted and will reverse the wind direction.

Turbulence

The amount of turbulence in the wind, as with the standard Cinema 4D modifier.

Frequency, Scale

The turbulence frequency and scale, as in the Turbulence modifier.

Strength Multiplier

This spline interface lets you vary the strength of the wind over the lifetime of the document, so you can use this to vary the wind direction and speed with time. The values returned are used to multiply the 'Wind Strength' setting, so a value of 1.0 will have no effect; a value of zero will result in no wind at all.

This setting is deprecated and it is recommended that you use data mapping instead. You can achieve the same effect by mapping the 'Wind Strength' to 'Scene Time'.

Y Limit

By default the maximum Y value in the spline is 2.0. You may want the maximum multiplier to be higher than that. To do that, use the this setting (you can reduce it as well, of course).