Struct Assembly 

pub struct Assembly { /* private fields */ }

A hierarchical assembly of positioned components.

The assembly tree supports:

• Adding components with transforms
• Parent-child hierarchy
• Instance sharing (same solid, different transforms)
• Bounding box computation for the entire assembly
• Flattening to a list of positioned solids

Implementations

impl Assembly

pub fn new(name: impl Into<String>) -> Self

Creates a new empty assembly.

pub fn name(&self) -> &str

Returns the assembly name.

pub fn add_root_component( &mut self, name: impl Into<String>, solid: SolidId, transform: Mat4, ) -> ComponentId

Adds a root-level component (no parent).

pub fn add_child_component( &mut self, parent: ComponentId, name: impl Into<String>, solid: SolidId, transform: Mat4, ) -> Result<ComponentId, OperationsError>

Adds a child component under an existing parent.

Errors

Returns an error if the parent ID doesn’t exist.

pub fn component(&self, id: ComponentId) -> Option<&Component>

Returns a component by ID.

pub fn roots(&self) -> &[ComponentId]

Returns root-level component IDs.

pub fn component_count(&self) -> usize

Returns the total number of components.

pub fn world_transform(&self, id: ComponentId) -> Option<Mat4>

Computes the world transform for a component by multiplying all parent transforms in the hierarchy.

pub fn flatten(&self) -> Vec<(SolidId, Mat4)>

Flattens the assembly to a list of (solid, world_transform) pairs.

This resolves the full hierarchy, computing the accumulated transform for each leaf component.

pub fn bounding_box(&self, topo: &Topology) -> Result<Aabb3, OperationsError>

Computes the bounding box of the entire assembly.

Errors

Returns an error if any solid’s bounding box computation fails.

pub fn bill_of_materials(&self) -> Vec<BomEntry>

Generate a bill of materials: list of unique solids and their instance count.

Trait Implementations

impl Clone for Assembly

fn clone(&self) -> Assembly

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Assembly

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

Formats the value using the given formatter.

impl Default for Assembly

fn default() -> Assembly

Returns the “default value” for a type.