You can use force modifiers to direct the behavior of spline primitives. To enable force modifiers, you must add an Apply Net Force modifier to the Description. All other force modifiers must appear below Apply Net Force in the modifier list.
You can use Maya Fields or Maya Nucleus dynamics to generate effects and drive the behavior of the splines. To do this, you must first convert the splines to Maya NURBS curves.
Applies the combined effect of force modifiers to the Description. You can use Apply Net Force and its attributes as global controls for a chain of force modifiers.
Lets you control how the modifier affects primitives in specified areas of the surface. For example, use Mask to load or an expression or create a Ptex map that masks out the effect of the modifier.
Lets you adjust the combined strength of all force modifiers. Use Stiffness as a global setting for how all the force modifiers in the stack affect the splines.
Lets you scale the combined effect of force modifiers along the spline length at specified points, starting at the spline root (left end of the curve, indicated with an R ) to its tip (right side of the curve, indicated by a T).
Generates an internal force within the volume of an ellipsoid . This ellipsoid volume is defined by the Center, X Vec, Y Vec, and Z Vec attribute values. Splines within the volume are affected by the force.
Specifies the coordinates of the ellipsoid center.
Specifies the X, Y, and Z axis coordinates of the ellipsoid volume.
Set the strength of the force inside the volume.
Specifies a distance (value between -1.0 and 1.0) in which the force drops off from the Magnitude value to 0.
Applies a force along the X, Y, and Z axis. By default, Force is set to -1 along the Y axis to act as a gravity force.
Sets the magnitude and direction of the force.
Generates a sphere-shaped force that repels splines. Use the Radius and Falloff attributes to specify the area affected by the force.
Specifies the X, Y, and Z coordinates of the sphere center.
Specifies the radius of the sphere. Higher values generate larger spheres.
Specifies the strength of the sphere force.
Specifies the force falloff distance from the center of the sphere. Higher values generate greater falloff distance, which decreases the effect of the force as distance increases from the Center value.