Struct ThreeMfInstance 

pub struct ThreeMfInstance {
    pub object_id: u32,
    pub mesh: usize,
    pub transform: [f64; 12],
    pub first_vertex: usize,
    pub vertex_count: usize,
    pub first_triangle: usize,
    pub triangle_count: usize,
    pub name: Option<String>,
}

One placement of one mesh: a <build><item>, or a <component> reached through one, with the transforms from the item down composed.

Fields

object_id: u32

The mesh-bearing object placed (not the item’s objectid when the item pointed at a <components> object).

mesh: usize

Index into ThreeMfReadResult::meshes.

transform: [f64; 12]

The composed 3x4 row-vector transform, in 3MF attribute order (m00 m01 m02 m10 m11 m12 m20 m21 m22 m30 m31 m32), translation in mm.

first_vertex: usize

Where this instance’s geometry sits in the flattened buffers: its vertices are positions[first_vertex * 3 ..][.. vertex_count * 3] and its triangles indices[first_triangle * 3 ..][.. triangle_count * 3]. Instances are laid out in order and never share a vertex, which is what lets a consumer take one body out without re-flattening the build.

vertex_count: usize

first_triangle: usize

triangle_count: usize

name: Option<String>

The placed object’s name, or failing that the nearest named <components> object above it; None when nothing on the way was named. Carries no geometry.

Implementations

impl ThreeMfInstance

pub fn transform_point(&self, point: [f64; 3]) -> [f64; 3]

Place an object-local point: x' = x·m00 + y·m10 + z·m20 + m30.

Trait Implementations

impl Clone for ThreeMfInstance

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ThreeMfInstance

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

Formats the value using the given formatter.

impl PartialEq for ThreeMfInstance

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for ThreeMfInstance

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ThreeMfInstance