The function QuickTreeGenerator uses a sphere with randomized vertices to generate a tree.

After importing into your BJS project simply add

const tree = QuickTreeGenerator(sizeBranch, sizeTrunk, radius, trunkMaterial, leafMaterial);

sizeBranch - sphere radius used for branches and leaves 15 to 20.

sizeTrunk - height of trunk 10 to 15.

radius - radius of trunk 1 to 5.

trunkMaterial - material used for trunk.

leafMaterial - material for canopies.