Struct BSpline 

pub struct BSpline {
    pub control_points: Vec<Vec3>,
    pub closed: bool,
}

Cubic uniform B-Spline (C2 continuity). Does NOT pass through control points.

Fields

control_points: Vec<Vec3>

closed: bool

Implementations

impl BSpline

pub fn new(control_points: Vec<Vec3>) -> Self

pub fn closed(control_points: Vec<Vec3>) -> Self

Trait Implementations

impl Curve for BSpline

fn sample(&self, t: f32) -> Vec3

Sample position at parameter t ∈ [0, 1].

fn tangent(&self, t: f32) -> Vec3

Sample tangent (unnormalized derivative) at t.

fn unit_tangent(&self, t: f32) -> Vec3

Sample unit tangent at t.

fn normal_2d(&self, t: f32) -> Vec3

Sample the normal (perpendicular to tangent) at t, in the XY plane.

fn arc_length(&self, n: u32) -> f32

Approximate arc length using n segments.

fn build_arc_table(&self, n: u32) -> ArcTable

Build an arc-length table with n segments for uniform-speed queries.

fn sample_uniform(&self, n: usize) -> Vec<Vec3>

Sample n evenly-spaced points along the curve (by parameter).

fn sample_arc_uniform(&self, n: usize, table_resolution: u32) -> Vec<Vec3>

Sample n points at equal arc-length intervals.

fn bounding_box(&self, resolution: u32) -> (Vec3, Vec3)

Bounding box as (min, max).

fn closest_point(&self, query: Vec3, resolution: u32) -> (f32, Vec3)

Find the closest point on the curve to query, returning (t, point).