Trait VertexMap 

pub trait VertexMap {
    // Required methods
    fn point(&self, p: [f32; 3]) -> [f32; 3];
    fn normal(&self, n: [f32; 3]) -> Option<[f32; 3]>;
    fn tangent(&self, t: [f32; 4]) -> Option<[f32; 4]>;
}

A map of space a primitive’s vertices are moved by, one rule per Moves: the one way a pass moves vertex streams in place (move_streams), so every stream whose meaning moves is moved.

Required Methods

fn point(&self, p: [f32; 3]) -> [f32; 3]

A point (a position, a Semantic::Point).

fn normal(&self, n: [f32; 3]) -> Option<[f32; 3]>

A surface normal. None where the map turns no normal (a singular map).

fn tangent(&self, t: [f32; 4]) -> Option<[f32; 4]>

A tangent: xyz and the bitangent sign w. None where the map turns no tangent.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl VertexMap for Linear

impl VertexMap for Offset

impl VertexMap for SourceFrame

A frame conversion moves a mesh’s streams as it moves positions and directions: normals and tangents by the signed permutation (a uniform scale turns no direction), a tangent’s bitangent sign negated where the conversion mirrors.