Struct hexasphere::TetraSphereBase

pub struct TetraSphereBase;

Implements a tetrahedron as the base shape.

• 4 vertices
• 4 faces
• 6 edges

This shape provides somewhat skewed results for a sphere, especially at lower subdivisions. I recommend that subdivisions of higher than 10 be used for acceptable results.

Trait Implementations

impl BaseShape for TetraSphereBase

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: text a - 0 - b | / | 3 4 1 | / | d - 2 - c

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: - [lerp] implements linear interpolation. - [geometric_slerp] implements spherical interpolation. (Interpolates along an arc on a sphere) - [normalized_lerp] implements cheaper yet less accurate spherical interpolation. The accuracy decreases as the angle between the two points on the unit sphere increases.

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 TetraSphereBase

fn clone(&self) -> TetraSphereBase

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for TetraSphereBase

impl Debug for TetraSphereBase

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

Formats the value using the given formatter.

impl Default for TetraSphereBase

fn default() -> TetraSphereBase

Returns the "default value" for a type.

impl EquilateralBaseShape for TetraSphereBase

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.