Struct MultiSection 

pub struct MultiSection<V, S: Storage<V>> { /* private fields */ }

Group multiple field sections with consistent per-point offsets.

Implementations

impl<V, S> MultiSection<V, S>

where S: Storage<V>,

pub fn new(fields: Vec<FieldSection<V, S>>) -> Result<Self, MeshSieveError>

Construct a multi-section from field sections.

All fields must share the same point set. Per-point total DOFs are the sum of field DOFs, in field order.

pub fn atlas(&self) -> &Atlas

Borrow the combined atlas.

pub fn field_count(&self) -> usize

Number of fields.

pub fn fields(&self) -> &[FieldSection<V, S>]

Borrow all fields.

pub fn fields_mut(&mut self) -> &mut [FieldSection<V, S>]

Mutable access to all fields.

pub fn field(&self, index: usize) -> Option<&FieldSection<V, S>>

Borrow a field by index.

pub fn field_mut(&mut self, index: usize) -> Option<&mut FieldSection<V, S>>

Mutable access to a field by index.

pub fn field_by_name(&self, name: &str) -> Option<&FieldSection<V, S>>

Borrow a field by name.

pub fn field_by_name_mut( &mut self, name: &str, ) -> Option<&mut FieldSection<V, S>>

Mutable access to a field by name.

pub fn dof(&self, p: PointId) -> Result<usize, MeshSieveError>

Total DOF count at point p across all fields.

pub fn offset(&self, p: PointId) -> Result<usize, MeshSieveError>

Offset for point p in the combined layout.

pub fn field_dof( &self, p: PointId, field: usize, ) -> Result<usize, MeshSieveError>

DOF count for a specific field at point p.

pub fn field_offset( &self, p: PointId, field: usize, ) -> Result<usize, MeshSieveError>

Field offset for point p in the combined layout.

This mirrors PetscSection field offsets: offset(p) + sum_{i < field} dof_i(p).

pub fn field_span( &self, p: PointId, field: usize, ) -> Result<(usize, usize), MeshSieveError>

(offset, dof) pair for a field at point p.

pub fn field_dof_by_name( &self, p: PointId, name: &str, ) -> Result<usize, MeshSieveError>

DOF count for a field at point p, by field name.

pub fn field_offset_by_name( &self, p: PointId, name: &str, ) -> Result<usize, MeshSieveError>

Field offset for point p, by field name.

pub fn apply_constraints(&mut self) -> Result<(), MeshSieveError>

where V: Clone,

Apply constraints for all fields.

impl<V, S> MultiSection<V, S>

where V: Clone, S: Storage<V>,

pub fn gather_in_order(&self) -> Result<Vec<V>, MeshSieveError>

Gather all fields into a flat buffer in combined atlas order.

pub fn try_scatter_in_order(&mut self, buf: &[V]) -> Result<(), MeshSieveError>

where V: Clone + Default,

Scatter values from a flat buffer in combined atlas order.

Trait Implementations

impl<V: Clone, S: Clone + Storage<V>> Clone for MultiSection<V, S>

fn clone(&self) -> MultiSection<V, S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V: Debug, S: Debug + Storage<V>> Debug for MultiSection<V, S>

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

Formats the value using the given formatter.