Function createTorus

geometry.js:90–106

(i, count)

}

function createTorus(i, count) {
    // Torus parameters
    const R = 30; // Major radius (distance from center of tube to center of torus)
    const r = 10; // Minor radius (radius of the tube)
    
    // Use a uniform distribution on the torus surface
    // by using uniform sampling in the 2 angle parameters
    const u = (i / count) * 2 * Math.PI; // Angle around the center of the torus
    const v = (i * Math.sqrt(5)) * 2 * Math.PI; // Angle around the tube
    
    // Parametric equation of a torus
    return new THREE.Vector3(
        (R + r * Math.cos(v)) * Math.cos(u),
        (R + r * Math.cos(v)) * Math.sin(u),
        r * Math.sin(v)
    );
}

function createVortex(i, count) {
    // Vortex parameters