Trees are generated using several parameters and random values. Changing window size or clicking the "Grow" button both create a new tree using the current values entered.
Density: Changes how likely a branch is to form, 100 means branches are always grown.
Angle Range: Range for angle that branch grows from the parent at.
Max New Branches: Max child branches a parent can have.
Max Branch Length: Max length a branch can grow, trunk is always this length.
Max Height: Longest chain of branches allowed, trunk is height 0.
Min Height: Guarantees branches up to a height, prevents growing tiny trees.