helpers.js

export { getWidth, getHeight, getCanvasDivNode };

function getWidth() {
    return document.getElementById("3d-graph").offsetWidth;
}

function getHeight() {
    return window.innerHeight - 200;
}

function getCanvasDivNode() {
    const domNode = document.getElementById("3d-graph");
    return domNode.firstChild.firstChild.firstChild;
}