Struct Mesh

pub struct Mesh {
    pub vertices: Vec<Vertex>,
    pub indices: Vec<usize>,
    pub material: usize,
}

Fields

vertices: Vec<Vertex>

indices: Vec<usize>

These indices are relative to 0 for this mesh. When adding to a global index buffer, we offset them by previous meshes’ vertex counts.

material: usize

Implementations

impl Mesh

pub fn new_surface(points: &Vec<Vec<Vec3>>, two_sided: bool) -> Self

Create a grid surface of triangles. Useful for building a grid surface like terrain, or a surface plot. grid’s outer vec is rows; inner vec is col-associated values within that row. The grid is evenly-spaced. todo: You should draw both sides. Create a sided surface. Useful as terrain, or as a 2-sided plot. Note that the grid is viewed here as x, z, with values in y direction, to be compatible with the convention of Z-up used elsewhere.

Points are (x, y, z), with Z being the vertical component. Their indices correspond to how they’re tied together in a mesh.

pub fn new_sphere(radius: f32, subdivisions: u32) -> Self

Creates an isosphere, from subdividing an icosahedron. 2-3 subdivisions works well for most uses.

pub fn new_sphere_uv(radius: f32, num_lats: usize, num_lons: usize) -> Self

Create a UV sphere mesh. A higher number of latitudes and longitudes results in a a smoother sphere.

pub fn new_ring( len: f32, radius_inner: f32, radius_outer: f32, num_sides: usize, ) -> Self

pub fn new_box(len_x: f32, len_y: f32, len_z: f32) -> Self

Create a box (rectangular prism) mesh.

pub fn new_tetrahedron(side_len: f32) -> Self

Create a tetrahedron mesh

pub fn new_cylinder(len: f32, radius: f32, num_sides: usize) -> Self

Create a cylinder

pub fn new_pyramid(len: f32, radius: f32, num_sides: usize) -> Self

pub fn new_arrow(len: f32, radius: f32, num_sides: usize) -> Self

Create an arrow, oriented up.

pub fn from_obj(obj_data: &[u8]) -> Self

Load a mesh from obj data. File type description Example

pub fn from_obj_file(filename: &str) -> Self

Load a mesh from a obj file. File type description Example

Trait Implementations

impl Clone for Mesh

fn clone(&self) -> Mesh

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Mesh

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

Formats the value using the given formatter.

impl Default for Mesh

fn default() -> Mesh

Returns the “default value” for a type.