Crate splines

splines

To construct a BezierCurve you should use BezierCurveBuilder.

Using splines

For a Bezier curve with a certain degree you need degree+1 control vertices (CVs).

extern crate splines;
extern crate nalgebra as na;

use na::Vec4;

fn main() {
    // degree 2 curve (needs 3 CVs)
    let pt1 = Vec4::new(0.0, 0.0, 0.0, 1.0); // 0 0
    let pt2 = Vec4::new(1.0, 1.0, 0.0, 1.0); // 1 1
    let pt3 = Vec4::new(2.0, 0.0, 0.0, 1.0); // 2 0
    let curve = splines::BezierCurveBuilder::new()
        .add_cv(pt1)
        .add_cv(pt2)
        .add_cv(pt3)
        .finalize();
    println!("{:?}", curve);
    // degree 3 curve (needs 4 CVs)
    let pt1 = Vec4::new(0.0, 0.0, 0.0, 1.0); // 0 0
    let pt2 = Vec4::new(0.0, 1.0, 0.0, 1.0); // 0 1
    let pt3 = Vec4::new(1.0, 1.0, 0.0, 1.0); // 1 1
    let pt4 = Vec4::new(1.0, 0.0, 0.0, 1.0); // 1 0
    let curve = splines::BezierCurveBuilder::new()
        .add_cv(pt1)
        .add_cv(pt2)
        .add_cv(pt3)
        .add_cv(pt4)
        .finalize();
    println!("{:?}", curve);
}

Structs

BezierCurve
BezierCurveBuilder	Helper to construct a BezierCurve.