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■ Spatial Model This more-complex model of fold stiffness can be useful
if you are simulating a complicated piece of cloth, such as a dress. It allows
you, for instance, to add fold stiffness only to sections of the cloth that
are flat.
■ Stiffness The fold stiffness value.
■ Distance The degree of fold stiffness per unit area. A Distance value
of 2 refers to twice the average triangle edge length in the cloth, so a
large Distance value results in a large concentration of fold stiffness per
unit area.
■ Spread Angle Controls the degree to which fold stiffness is added to
cloth when it has a non-flat shape. The angle relates to the threshold
angle between two parts of the cloth, below which stiffness is added.
If this value is 0.0, fold stiffness is added only to flat parts of the cloth.
■ Split Angle The degree to which fold stiffness is added; specifically,
how fold stiffness is concentrated along the grid lines of the cloth's
original mesh.
Avoid Self-Intersections When on, the cloth will not intersect with itself
during the simulation. This results in a more realistic-looking simulation, but
can increase simulation time.
Constrain Deformation When on, limits the extent to which the cloth can
stretch.
■ Max A percentage value that indicates how stretchy the cloth is: The
lower the value, the less stretching reactor allows.
Start With Current State When on, the Cloth object starts the simulation
using the current state stored in the modifier. This can be useful if you have,
for example, draped the cloth around something in the Preview Window and
then updated the viewport using Update MAX. When off, the cloth starts with
the state it had originally, below the modifier. Available only when keyframes
are stored.
# Keyframes Stored This read-only shows the number of keyframes, if any,
stored for the Cloth object. reactor stores keyframes for the object if you create
a reactor animation, or if you use Update MAX in the Preview Window.
Clear Keyframes Deletes any stored keyframes for the Cloth object.
4032 | Chapter 16 reactor