2009

Breakable group
Breakable When on, the constraint is breakable. If its breakable limits are
exceeded during simulation, it ceases to exert impulses on the attached objects.
You can find out more about breakable constraints in
Breakable Constraints
on page 3944.
Display group
Size Lets you change the size of the Hinge limit display in the viewport.
Reset Default Values Returns the Strength, Tau, Min Angle, Max Angle,
Friction, Linear, Angular, Threshold, and Display settings to their default
values.
Point-Point Constraint
Create panel > Helpers > reactor > Point-Point
Animation menu > reactor > Create Object > Point-Point Constraint
reactor toolbar > Create Point-Point Constraint button
The Point-Point (point-to-point) constraint lets you attach two objects together,
or an object to a point in world space. It forces its objects to try to share a
common point in space. The objects can rotate freely relative to each other,
but always have the attachment point in common. When you set up the
constraint, the point is defined in the object space of each object involved.
During the simulation the constraint tries to apply forces to the objects so
that the two pivot points defined by the two objects match.
reactor also provides two variations on the Point-Point constraint: Limited
and Stiff Spring. With a Limited Point-Point constraint, you can specify limits
for how much the child object can rotate relative to the parent. A Stiff Spring
constraint is similar to a standard Point-Point constraint with one important
exception: It holds the constrained bodies apart at a specified distance, as if
they were attached at each end of an invisible rod. The Stiff Spring variant
requires a point in the body space of each of two bodies, and a constant
distance by which reactor must keep these two points separated. Each body
is free to rotate around its point.
Constraints | 3975