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The "magnetic field" of influence of the "magnet" geometry is defined by a metaball field. It allows the creation of animated bumps and dents within objects, and other special effects.
The actual deformation comes from the Translates of the Magnet op, and not from the metaball. The metaball defines the area of effect for the Translates of the Magnet op. The weight of the metaball determines the effectiveness of the Translates within the magnet op.
Geometry to deform.
Magnets to use for the deformation.
Deform Group Type
Type of geometry specified in Deform Group.
Order in which transformations occur.
Order in which rotations occur.
Translation caused by the magnet.
Rotation caused by the magnet.
Scaling caused by the magnet.
Local pivot point of the magnet.
Geometry is deformed.
Affect Point Color
Point colors are altered by the magnet.
The point color RGB values are clamped to
[0, 1] interval.
Affect Point Normal
Reorients point normals of the source.
Affect Point Velocity
Alters the velocity of the source points.
This example shows the use of the Magnet SOP, and illustraites its ability to deform geometry.
The Magnet SOP works by using the Density Field of a Metaball as a Magnetic Influence Field on a piece of geometry. The degree to which the Magnetic Field effects the surface it is deforming is based on the distance of that surface to the center of the Metaball.
Here, the Metaballs have been attached to a moving particle system which bounce across a plane. The Metaballs also interact with the plane, causing it to bubble upward as their Fields intersect the surface.