Function removeNode

docs/app/js/sanddance-app.js:102105–102110

(p)

    return p;
}
function removeNode(p) {
    p.next.prev = p.prev;
    p.prev.next = p.next;
    if (p.prevZ) p.prevZ.nextZ = p.nextZ;
    if (p.nextZ) p.nextZ.prevZ = p.prevZ;
}
function Node(i, x, y) {
    this.i = i;
    this.x = x;