Enum EmitterShape 

pub enum EmitterShape {
    Point,
    Sphere {
        radius: f32,
    },
    Hemisphere {
        radius: f32,
    },
    SphereVolume {
        radius: f32,
    },
    Cone {
        angle: f32,
        length: f32,
    },
    Box {
        half_extents: Vec3,
    },
    Disk {
        radius: f32,
    },
    Ring {
        inner: f32,
        outer: f32,
    },
    Line {
        a: Vec3,
        b: Vec3,
    },
    Mesh {
        sample_points: Vec<Vec3>,
    },
    Torus {
        major_radius: f32,
        minor_radius: f32,
    },
}

Defines the 3-D region from which a burst emits.

Variants

Point

Single point emission.

Sphere

Uniform sphere surface.

Fields

radius: f32

Hemisphere

Hemisphere surface pointing up (+Y).

Fields

radius: f32

SphereVolume

Solid sphere volume.

Fields

radius: f32

Cone

Cone: apex at origin, opening toward +Y.

Fields

angle: f32

length: f32

Box

Axis-aligned box.

Fields

half_extents: Vec3

Disk

Flat disk on the XZ plane.

Fields

radius: f32

Ring

Ring (annulus) at y=0.

Fields

inner: f32

outer: f32

Line

Line segment from a to b.

Fields

a: Vec3

b: Vec3

Mesh

Mesh surface (uses pre-baked sample points).

Fields

sample_points: Vec<Vec3>

Torus

Torus.

Fields

major_radius: f32

minor_radius: f32

Implementations

impl EmitterShape

pub fn sample(&self, rng: &mut FastRng) -> Vec3

Sample a random position within the shape.

pub fn normal_at(&self, pos: Vec3) -> Vec3

Sample the outward normal direction at a sampled position (for velocity direction).

Trait Implementations

impl Clone for EmitterShape

fn clone(&self) -> EmitterShape

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EmitterShape

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

Formats the value using the given formatter.