private void AddBranch(FractalLine parent, int Depth)
{
if (Depth > SplitDepth || Draw == false)
{
return;
}
double Angle1 = parent.m_Angle - AngleDelta;
double Angle2 = parent.m_Angle + AngleDelta;
FractalLine line = new FractalLine(parent.m_End, (int)(parent.CalcLength() * ShrinkRate), Angle1, parent);
FractalLine line2 = new FractalLine(parent.m_End, (int)(parent.CalcLength() * ShrinkRate), Angle2, parent);
System.Threading.Thread.Sleep(Int32.Parse(txtAnimDelay.Text));
//UI commands must be invoked on ui thread
Action a = () => DrawCanvas.Refresh();
InvokeUI(a);
/*Take turns on which side goes first,
* This prevents one side of the tree from completing first*/
if (Depth % 2 == 0)
{
AddBranch(line, Depth + 1);
AddBranch(line2, Depth + 1);
}
else
{
AddBranch(line2, Depth + 1);
AddBranch(line, Depth + 1);
}
}
private void BtnDraw_Click(object sender, EventArgs e)
{
Draw = true;
UpdateParameters();
//Run in new thread to keep UI responsive
Task.Run(() =>
{
int MiddleCanvasX = DrawCanvas.Size.Width / 2;
Trunk = new FractalLine(new Point(MiddleCanvasX, DrawCanvas.Size.Height), StartHeight, 90, null);
AddBranch(Trunk, 0);
DrawCanvas.Invalidate();
});
}
public FractalLine(Point Start, int Length, double Degrees, FractalLine parent)
{
m_Children = new List <FractalLine>();
m_Start = Start;
m_Angle = Degrees;
double Radians = (Math.PI / 180.0) * Degrees;
int Y = (int)(Math.Sin(Radians) * Length);
int X = (int)(Math.Cos(Radians) * Length);
m_End = new Point(Start.X + X, Start.Y - Y);
m_Parent = parent;
if (m_Parent != null)
{
m_Parent.m_Children.Add(this);
}
}