Struct zaplib::Geometry

pub struct Geometry { /* private fields */ }

Generated geometry data used for instanced rendering, represented as triangles.

For example, you can define that a quad has 4 vertices, spanning 2 triangles (for use in e.g. crate::QuadIns), so you don’t have to manually create them every time you want to render a quad.

Implementations

impl Geometry

pub fn new<T: 'static + Copy>(
    vertex_attributes: Vec<T>,
    triangle_indices: Vec<[u32; 3]>
) -> Self

Instantiates a new Geometry.

vertex_attributes correspond to “geometry” fields in the shader. Be sure to use #[repr(C)] in the structs you pass in. Structs can only contain fields of type f32/Vec2/Vec3/Vec4.

Anything that we can get an f32-slice ([f32]) from works here.

triangle_indices - the indices of vertex attributes by which to render each triangle. A triangle has 3 vertices, hence we group indices in sets of 3.

Trait Implementations

impl Default for Geometry

fn default() -> Geometry

Returns the “default value” for a type.