N-order curves

NOrderCurve accepts any number of control points from two upward. Use it when the degree is determined at runtime or when importing curve data that does not fit one of the dedicated classes.

Create a curve

Use Curve::fromPoints() when coordinates already arrive as arrays:

<?php

require __DIR__.'/vendor/autoload.php';

use Alto\Bezier\Curve;

$curve = Curve::fromPoints([
    [10, 150],
    [30, 20],
    [70, 180],
    [120, 10],
    [170, 190],
    [210, 40],
    [230, 150],
]);

echo 'Degree: '.$curve->degree.PHP_EOL;
echo 'Midpoint: '.$curve->pointAt(0.5).PHP_EOL;

The result is:

Degree: 6
Midpoint: (120, 100.15625)

Construct NOrderCurve directly when the inputs are already Point objects. Its degree property is always the control-point count minus one.

Use a dedicated class when the degree is known and its direct SVG mapping or named control-point properties are useful.