Struct Transform 

pub struct Transform {
    pub q: [f32; 4],
    pub p: [f32; 3],
}

The engine’s transform: a rotation (a quaternion) and an offset. A placed model keeps its position this way.

Original: Math::Transform.

Fields

q: [f32; 4]

The rotation, a unit quaternion (x, y, z, w).

p: [f32; 3]

The offset, applied after the rotation.

Implementations

impl Transform

pub fn from_yaw_pitch_offset( yaw: f32, pitch: f32, offset: [f32; 3], ) -> Transform

A transform from a yaw, a pitch (degrees) and an offset. The rotation uses the sines and cosines of the half angles: q = (−cy·sp, −sy·sp, −cp·sy, cp·cy).

Original: Math::Transform::FromYawPitchOffset, Runtime 0x18007e540.

pub fn character_rotation(yaw: f32) -> [f32; 4]

The rotation a CharacterComponent’s update writes: (+0, +0, −sinf(h), cosf(h)) with h = (yaw × DEG_TO_RAD) × 0.5, rounded in that order (a model’s FromYawPitchOffset halves first, and its zeros are negative).

Original: FUN_14010e990.

pub fn of_model(yaw: f32, position: [f32; 3]) -> Transform

A placed entity’s model transform: its yaw, pitch 0, its position.

pub fn rotate(&self, v: [f32; 3]) -> [f32; 3]

v turned by the rotation: q · (v, 0) · q̄.

Original: Math::Quaternion::Rotate, Runtime 0x18001ea20.

pub fn apply(&self, v: [f32; 3]) -> [f32; 3]

A point moved by the transform: rotated, then offset.

Original: Math::Transform::operator*(Vector3), Runtime 0x18001eae0.

pub fn inverse(&self) -> Transform

The inverse transform: the conjugate rotation, and the negated offset turned by it.

Original: Math::Transform::Inverse, Runtime 0x18005e620.

pub fn heading_of(&self, local_yaw: f32) -> f32

A heading in the model’s own space, turned into the world: the heading of from_yaw_pitch(local_yaw, 0) after the rotation.

Original: FUN_140128d50.

Trait Implementations

impl Clone for Transform

fn clone(&self) -> Transform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Transform

impl Debug for Transform

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

Formats the value using the given formatter.

impl Default for Transform

fn default() -> Transform

The identity.

impl PartialEq for Transform

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Transform