The function simplePineGenerator uses a tube to generate a tree.

It is based on playgrounds from this forum topic http://www.html5gamedevs.com/topic/21484-simple-pine-trees/

After importing into your BJS project simply add

var tree = simplePineGenerator(canopies, height, trunkMaterial, leafMaterial, scene);

canopies - number of leaf sections.

height - height of tree.

trunkMaterial - material used for trunk.

leafMaterial - material for canopies.

scene - BABYLON scene.