Enum blender_armature::Bone

pub enum Bone {
    Matrix(Matrix4<f32>),
    DualQuat(DualQuaternion<f32>),
}

A bone in an armature. Can either be a dual quaternion or a matrix. When you export bones from Blender they come as matrices - BlenderArmature lets you convert them into dual quaternions which are usually more favorable for when implementing skeletal animation with rigid transformations.

Variants

Matrix(Matrix4<f32>)

A transform represented as a matrix

DualQuat(DualQuaternion<f32>)

A rigid transform represented as a dual quaternion

Implementations

impl Bone

pub fn relative_to_parent(&self, parent_bone: Bone) -> Bone

Get this bone’s transform relative to some parent bone.

You could typically use this when both bones are in world space.

use nalgebra::{Matrix4, Vector3, Point3};

let axis_angle = Vector3::default();

let parent = Bone::Matrix(Matrix4::new_rotation_wrt_point(
  axis_angle,
  Point3::new(4., 5., 6.)
));

let child = Bone::Matrix(Matrix4::new_rotation_wrt_point(
  axis_angle,
  Point3::new(44., 55., 66.)
));

let expected = Bone::Matrix(Matrix4::new_rotation_wrt_point(
  axis_angle,
  Point3::new(40., 50., 60.)
));

assert_eq!(child.relative_to_parent(parent), expected);

Trait Implementations

impl Clone for Bone

fn clone(&self) -> Bone

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Bone

impl Debug for Bone

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Bone

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl PartialEq<Bone> for Bone

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Serialize for Bone

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 Bone