# Functions
NewCone creates and returns a pointer to a new Cone equation object.
NewContact creates and returns a pointer to a new Contact equation object.
NewEquation creates and returns a pointer to a new Equation object.
NewFriction creates and returns a pointer to a new Friction equation object.
NewRotational creates and returns a pointer to a new Rotational equation object.
NewRotationalMotor creates and returns a pointer to a new RotationalMotor equation object.
# Structs
Cone is a cone constraint equation.
Contact is a contact/non-penetration constraint equation.
Equation is a SPOOK constraint equation.
Friction is a friction constraint equation.
JacobianElement contains 6 entries, 3 spatial and 3 rotational degrees of freedom.
Rotational is a rotational constraint equation.
RotationalMotor is a rotational motor constraint equation.