2D Fractal Tree

2D fractal Tree
===========

This creates a **TWO DIMENSIONAL** tree that can be used in creating laser-cut designs

It is possible to create a 3d extrusion of the tree using the following code:
` linear_extrude(height = 5) {
trunk();
}`

Based on "Procedurally Generated Trees" by steveweber314 on instructables
http://www.instructables.com/id/Procedurally-Generated-Trees/

to use from with an OpenSCAD design:

` use `

call with:
`trunk();`

paramaters:
--------------
size = [real] Base size for the trunk
depth = [integer 0:1] Number of recursions (warning: /exponentially more
opperations per increase of depth
seed = [real>0] Random seed to base tree on
widthBottom = [real 0:1] Width of bottom of each segment as a proportion of size
widthTop = [real 0:1] Width of top of each segment a s aproportion of size
joint = [real 0:1] Size of joint as percentage of size