//TODO Make this thing recursive.
/// <summary>
/// Adds a new branch to the tree.
/// </summary>
/// <param name="currentNode">Node (branch) that is currently processed. New node will be attached to it.</param>
/// <param name="sideBranch">True if the node will start a new branch.
/// False (default) if node will continue current branch.</param>
/// <returns>New node.</returns>
public static Node AddBranch(Node currentNode, bool sideBranch = false)
{
// Create new node which extend current branch.
Node n = new Node(new SFML.Window.Vector2f(5, 0));
n.Origin = currentNode.Origin;
n.FillColor = currentNode.FillColor;
n.Generation = currentNode.Generation + 1;
// Offset for new node's position. Will make it grow at the end of current node.
double offsetX = Math.Abs(currentNode.Size.Y) * Math.Sin(currentNode.Rotation * (Math.PI / 180));
double offsetY = Math.Abs(currentNode.Size.Y) * Math.Cos(currentNode.Rotation * (Math.PI / 180));
n.Position = currentNode.Position + new Vector2f((float)offsetX, -(float)offsetY);
if (!sideBranch)
{
n.Rotation = rnd. Next(((int)(currentNode.Rotation) - 5), ((int)(currentNode.Rotation) + 5));
return n;
}
else
{
n.Rotation = rnd.Next(((int)(currentNode.Rotation) - 50), ((int)
(currentNode.Rotation) + 50));
return n;
}
}
static void Main(string[] args)
{
RenderWindow window = new RenderWindow(new SFML.Window.VideoMode(800, 600), "Title");
RenderTexture treeTexture = new RenderTexture(800, 600);
Sprite treeSprite = new Sprite(treeTexture.Texture);
// List of tree nodes.
List<Node> nodes = new List<Node>();
List<Node> dividedNodes = new List<Node>();
DateTime timeOfLastDraw = DateTime.Now;
// Create root node.
Node root = new Node(new SFML.Window.Vector2f(5, 2));
root.Origin = new SFML.Window.Vector2f(1, 0);
root.Position = new SFML.Window.Vector2f(400, 600);
root.FillColor = new Color(0, 200, 50);
root.Generation = 1;
nodes.Add(root);
DateTime timeOfLastUpdate = DateTime.Now;
// Loop
while (window.IsOpen())
{
window.Clear(Color.White);
for (int i = 0; i < nodes.Count; i++)
{
treeTexture.Draw(nodes[i]);
if (nodes[i].Divided)
{
dividedNodes.Add(nodes[i]);
nodes.RemoveAt(i);
continue;
}
// Grow the node until it meets its max size.
else if (nodes[i].Size.Y > -25)
{
nodes[i].Size += new SFML.Window.Vector2f(0, -100 * (float)(Utilities.GetTimeDifference(timeOfLastUpdate)));
}
else // Node reached maximum size and can be cloned.
{
// Mark current node as divided, meaning it won't get any more branches and will be ignored by the loop.
nodes[i].Divided = true;
// Decide if current branch will extend.
if (rnd.Next(0, 101) > 20)
{
nodes.Add(AddBranch(nodes[i]));
}
// Devide if the branch will split.
if (rnd.Next(0, 101) > 40)
{
nodes.Add(AddBranch(nodes[i], true));
}
}
}
timeOfLastUpdate = DateTime.Now;
treeTexture.Display();
window.Draw(treeSprite);
foreach (Node node in dividedNodes)
{
treeTexture.Draw(node);
}
window.Display();
}
}
