Struct hexasphere::TriangleBase

pub struct TriangleBase;

Implements a single triangle as the base shape.

• 3 vertices
• 1 face
• 3 edges

This is a triangle on the XZ plane. The circumscribed circle on the triangle has radius 1.0. This is done to preserve accuracy of the subdivisions at higher levels of subdivision.

Trait Implementations

impl BaseShape for TriangleBase

fn initial_points(&self) -> &'static [Vec3A]

The initial vertices for the triangle. Note that Vec3A::new is not a const fn(), hence I recommend you use lazy_static. Check the source file for this crate and look for the constants module at the bottom for an example.

fn triangles(&self) -> &'static [Triangle]

Base triangles for the shape.

const EDGES: usize

Number of unique edges defined in the contents of triangles(). This number is 5 for a square for example:

fn interpolate(&self, a: Vec3A, b: Vec3A, p: f32) -> Vec3A

Basic function used for interpolation. When p is 0.0, a is expected. When p is 1.0, b is expected. There are three options already implemented in this crate:

fn interpolate_half(&self, a: Vec3A, b: Vec3A) -> Vec3A

If an optimization is available for the case where p is 0.5, this function should implement it. This defaults to calling interpolate(a, b, 0.5) however.

fn interpolate_multiple(
    &self,
    a: Vec3A,
    b: Vec3A,
    indices: &[u32],
    points: &mut [Vec3A]
)

If an optimization is available for the case where p varies but a and b don't this function should implement it.

impl Clone for TriangleBase

fn clone(&self) -> TriangleBase

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for TriangleBase

impl Debug for TriangleBase

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

Formats the value using the given formatter.

impl Default for TriangleBase

fn default() -> TriangleBase

Returns the "default value" for a type.

impl EquilateralBaseShape for TriangleBase

fn triangle_normals() -> &'static [Vec3A]

Normals for each of the triangles provided by BaseShape::triangles.

fn triangle_min_dot() -> f32

Minimum value for the dot product which one could use to determine that triangle being the closest.