Struct Scope 

pub struct Scope {
    pub position: Vec3,
    pub rotation: Quat,
    pub size: Vec3,
}

An Oriented Bounding Box (OBB) that defines a shape’s coordinate frame.

Every CGA operation transforms a parent Scope into one or more child Scopes.

• position: world-space location of the scope’s local-space origin — the (0, 0, 0) corner of the box, not its centre. World corners are obtained as position + rotation * (u·sx, v·sy, w·sz) with each coordinate in [0, 1] (see Scope::world_point).
• rotation: local-to-world orientation (unit quaternion required by Scope::validate).
• size: non-negative extents along the local X, Y, Z axes. Zero on a given axis is allowed (footprint scopes have size.y = 0 until Extrude runs; face scopes from Comp(Faces) carry size.z = 0).

Fields

position: Vec3

rotation: Quat

size: Vec3

Implementations

impl Scope

pub fn unit() -> Self

Creates a unit scope at the origin with identity rotation.

pub fn new(position: Vec3, rotation: Quat, size: Vec3) -> Self

pub fn validate(&self) -> Result<(), ShapeError>

Returns Ok(()) if all fields are finite, the rotation is a unit quaternion, and no size component is negative.

Zero size components are permitted: a root scope may have Y = 0 before Extrude sets its height, and face scopes produced by Comp(Faces) carry Z = 0 (they are 2-D canvases). Negative sizes, however, have no valid interpretation and are rejected here before they can silently corrupt downstream operations such as Split.

Returns Err(InvalidNumericValue) on any violation.

pub fn world_point(&self, u: f64, v: f64, w: f64) -> Vec3

Returns the world-space position of the local-space point (u, v, w) where each coordinate is in [0, 1] (relative to scope size).

Trait Implementations

impl Clone for Scope

fn clone(&self) -> Scope

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Scope

impl Debug for Scope

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Scope

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Scope

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Scope

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 Scope