FSP Modeling tutorials.

In this tutorial we will create a growth model for a crown architecture. The model considers only the branch structure, without leaves, to provide an easy entry point. It may be helpful to understand the basic RGG code structure first, a tutorial is provided here.
The model is based on an annual scale, meaning that each run of the growth function simulates one year of growth. This way of simulating a tree in GroIMP is only one of many, and this tutorial focuses on understanding the development.

In this tutorial we will create a simple model of a tomato plant architecture.
Should this be a class ?