Enum ConstraintHandler 

pub enum ConstraintHandler {
    Plain,
    Transformation,
}

Constraint-handling strategy. Closed enum — small, homogeneous, user-selected per analysis.

Variants

Plain

Single-point constraints only (fixed DOFs), applied directly via Domain’s DOF numbering (fixed DOFs get no equation number, so they never enter the free-DOF system at all). No Lagrange multipliers, no penalty terms. Using this with a Domain that has multi-point constraints (Domain::equal_dof/rigid_diaphragm) is a model construction error — see AnalysisBuilder<Ready>::build; use Transformation instead.

Transformation

Single-point and multi-point constraints: general linear ties u_slave = sum(coeff * u_master) with masters on any nodes (Domain::add_constraint, and the helpers built on it: equal_dof, rigid_diaphragm, rigid_link). They are resolved at Domain::number_dofs time by substitution, with no extra unknowns (no Lagrange multipliers) and no penalty: a slave that reduces to exactly one master with coefficient 1 is literally the same unknown (it shares the master’s equation number); any other slave is a stored linear combination of unknowns that assembly and state scatter apply (Domain::value_at reads one back). Chains (a slave that is another constraint’s master) resolve to any depth. The constraints are homogeneous, so a fixed master must stay at zero.

Trait Implementations

impl Clone for ConstraintHandler

fn clone(&self) -> ConstraintHandler

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ConstraintHandler

impl Debug for ConstraintHandler

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.