Force 

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Instead of using 3ds Max's own Space-Warp system to create wind or gravity effects, this Node can be used to create the same or better effects. The big advantage by using this Node is the flexibility because of the internal controls and complete isolation with other scene based effects.

Operator Inputs 

ON - (Bool) This input data stream determines whether the operator is considered 'on' or 'off'. You can connect other operators to this input channel such as a Bool Helper to activate/deactivate the whole operator.

Time
- (Time) This input data stream is used to define the local time for the operator when the user wants to override the default system time.

Particle
- (Particle) This input data stream reads in the currently selected particle group that is to be brought to the target. The data stream MUST be connected and will be highlighted yellow if it is not.

Position
- (Position) defines the position (center) of the force field, this is needed for volumetric force field effects like Spheres or Cylinders.

Direction
- (Direction) sets the direction vector of the force field

UI Control Parameters
- those input data streams are the equivalent of the UI controls, keep in mind that there is no visual indication that an operator is connected to any of those inputs! It might be needless to adjust a value if it gets overwritten by a connected operator.

Operator Outputs 

No outputs available for this Node

Rollout Menu 

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Strength
- defines the strength of the force field. This value is specified in strength per second. A value of 1 will move the particle one 3ds Max unit further within one second. To get an effects that looks somehow similar to the native 3ds Max Gravity or other force field effects a value of 10 or 100 is suggested.

Variation
- adds a random variation to the strength of the force field.

Decay 1
- defines the distance measured from the Position, at which the decay should be calculated. After the Decay 1 radius is reached no more force is affecting the particles.

Decay 2
- defines a second falloff distance for Cylinder and Directional forces. This decay value affects those particles traveling along the height of the cylinder.

Type
- sets the Type of force field that should be applied to the particles. The following Types are possible:

Direct
- choose this option to use the supplied (connected) direction vector to apply the force field effect.

Sphere
- when selected a spherical force field effect will be applied to the particles.

Cylinder
- choose this option to make the force field behave like a Cylindrical one.

Cone
- to apply forces in a cone like manner, choose this option.

FOV
- defines the opening angle of the cone

Radial Sphere
- this type of force field works like a "motor", it moves particles around inside the force field. The speed of travel is defined by the strength of the force field.

Radial Cylinder
- like the Radial Sphere, this force field effect is more like a "motor" that moves particles in a circular manner around its center.

Void Sphere
- check this option to get a spherical force field that particles can not enter into.

Void Cylinder
- when checked, a cylindrical force field is created that particles can not enter.