Constraints (or joints) are used for specifying that a fixed distance must be maintained between two bodies, or a body and a fixed world-space position.
A world constraint has only one body, you should specify a
pointA position in
the constraint options parameter to attach the constraint to the world.
The stiffness of constraints can be modified to create springs or elastic.
To simulate a revolute constraint (or pin joint) set
length: 0 and a high
0.7 or above).
If the constraint is unstable, try lowering the
stiffness value and / or increasing
constraintIterations within the Matter Config.
For compound bodies, constraints must be applied to the parent body and not one of its parts.
A number that specifies the target resting length of the constraint. If not given it is calculated automatically in
A Number that specifies the stiffness of the constraint, i.e. the rate at which it returns to its resting
An optional Constraint configuration object that is used to set initial Constraint properties on creation.
A Matter JS Constraint.