using System;

using System.Collections.Generic;

using System.Numerics;

​

public class Program

{

    public static void Main()

    {

        Random rand = new Random();

        Tree poplar = new Tree(rand);

    }

​

    public class Branch

    {

        public int Generation;

        public string Name = "";

        public Vector3 PositionVector = Vector3.Zero;

        public Vector3 BranchVector;

        public float BaseThickness;

        public float EndThickness;

        public Tree ParentTree;

        public List<Branch> childList = new List<Branch>();

        public Branch(Vector3 position, Vector3 branchVector, string name)

        {

            PositionVector = position;

            BranchVector = branchVector;

            Name = name;

        }

        public float GetVolume()

        {

            return (BaseThickness*BaseThickness)*(BranchVector.Length())*(0.3f);

        }

​

        public void InfoDump()

        {

            Console.Write(Name);

            Console.Write("(");

            Console.Write(BranchVector.X + PositionVector.X);

            Console.Write(" , ");

            Console.Write(BranchVector.Y + PositionVector.Y);

            Console.Write(" , ");

            Console.Write(BranchVector.Z + PositionVector.Z);

            Console.Write(")");

            Console.Write(" BaseThick[" + BaseThickness + "]");

            Console.Write(" EndThick[" + EndThickness + "]");

            Console.Write(" Volume[" + GetVolume() + "]");

            Console.Write("\n");

        }

        public void Destroy()

        {

            foreach(Branch child in childList)

            {

                child.Destroy();

            }

        }

        public void Cut()

        {

            EndThickness = BaseThickness;

            foreach(Branch child in childList)

            {

                child.Destroy();

            }

        }

        public Branch CreateChildBranch(Tree tree, string name)

        {

​

            Vector3 childPosition = Vector3.Lerp(PositionVector, BranchVector, 0.5f);

            Vector3 direction = new Vector3(0,1,0);

            float length = (float)(Vector3.Distance(PositionVector, BranchVector)*tree.Rand.NextDouble());

            Branch childBranch = new Branch(childPosition, direction*length, name);

            childBranch.BaseThickness = BaseThickness * 0.5f; //Lerp this!

            childBranch.Generation = Generation+1;

            childList.Add(childBranch);

            if(childBranch.Generation < tree.MaxBranchGenerations){

                for (int i = 0; i < tree.MinChildrenPerBranch; i++)

                {

                    childBranch.CreateChildBranch(tree, childBranch.Name + "->" + i).InfoDump();

                }

            }

            return childBranch;

        }

    }

​

    public class Tree

    {

        public Random Rand;

        public Branch RootBranch;

        public int MinChildrenPerBranch = 5;

        public int MaxChildrenPerBranch = 5;

        public int MinBranchGenerations = 2;

        public int MaxBranchGenerations = 2;

        public float MinBranchLengthModifier = 0.8f;

        public float MaxBranchLengthModifier = 1.1f;

        public Tree(Random rand)

        {

            Rand = rand;

            Branch trunk = new Branch(Vector3.Zero, new Vector3(0, 5, 0), "root");

            RootBranch = trunk;

            trunk.BaseThickness = 2f;

            trunk.InfoDump();

            for (int i = 0; i < MinChildrenPerBranch; i++)

            {

                RootBranch.CreateChildBranch(this, RootBranch.Name + "->" + i).InfoDump();

            }

        }

    }

}