Tree generation for daylight simulations

gen_tree is an open-source python program (published on Github) to generate tree crowns for daylight simulations. Library methods generate primitive geometries like hemispheres, cones, ellipsoids that represent shapes of tree crowns based on a gap percentage. Gap percentage is the measure of light transmittance of a tree crown, the ratio of gaps between leaves divided by the total area of the tree crown (including all leaves and gaps).