Struct BoneTransform 

#[repr(C)]
pub struct BoneTransform {
    pub position: Vec2,
    pub rotation: f32,
    pub scale: Vec2,
}

Affine transform for a single bone: position, rotation (radians), scale.

Fields

position: Vec2

Translation offset relative to the parent bone (or world origin for root).

rotation: f32

Rotation in radians (counter-clockwise positive).

scale: Vec2

Non-uniform scale.

Implementations

impl BoneTransform

pub fn lerp(self, other: BoneTransform, t: f32) -> BoneTransform

Linearly interpolates between self and other by factor t.

Position and scale use Vec2::lerp; rotation uses shortest-path angle interpolation so that crossing the ±PI boundary works correctly.

pub fn to_matrix(&self) -> [[f32; 3]; 3]

Builds a 3x3 affine matrix (scale * rotate * translate) stored row-major.

The matrix applies scale, then rotation, then translation:

| sx*cos  -sy*sin  tx |
| sx*sin   sy*cos  ty |
|   0        0      1 |

pub fn combine(parent: &BoneTransform, child: &BoneTransform) -> BoneTransform

Composes parent and child transforms: parent * child.

Applies TRS composition: scales child position by parent scale, then rotates by parent rotation, then translates by parent position. Rotations accumulate additively; scales multiply component-wise.

Trait Implementations

impl Clone for BoneTransform

fn clone(&self) -> BoneTransform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BoneTransform

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

Formats the value using the given formatter.

impl Default for BoneTransform

fn default() -> BoneTransform

Identity transform: zero position, zero rotation, unit scale.

impl PartialEq for BoneTransform

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for BoneTransform

impl StructuralPartialEq for BoneTransform