/// <summary>
/// Перерисовываем pictureBox
/// </summary>
private void redrawImage()
{
g.Clear(Color.White);
foreach (edge e in edges)
{
draw_edge(pen, e);
}
pictureBox.Image = bmp;
center_point = centerPoint();
}
// поворот
private void rotate(My_point p, My_point rotatePoint, double a)
{
double angle = (a * Math.PI) / 180;
p.X -= rotatePoint.X;
p.Y -= rotatePoint.Y;
double xa = p.X * Math.Cos(angle) + p.Y * Math.Sin(angle);
double ya = p.Y * Math.Cos(angle) - p.X * Math.Sin(angle);
p.X = xa + rotatePoint.X;
p.Y = ya + rotatePoint.Y;
}
// построение фрактала
private void make_fract(string fileName, int level)
{
LSystem lsys = new LSystem(fileName);
string actions = lsys.getResult(level);
double angle = lsys.rotateAngle;
Stack <State> stack = new Stack <State>();
State currentState = new State(0, new My_point(0, 0), new My_point(40, 0));
for (int i = 0; i < actions.Length; i++)
{
if (actions[i] == 'F')
{
My_point p1 = new My_point(currentState.prevPoint.X, currentState.prevPoint.Y);
My_point p2 = new My_point(currentState.nextPoint.X, currentState.nextPoint.Y);
edges.Add(new edge(p1, p2));
currentState.prevPoint.X = currentState.nextPoint.X;
currentState.prevPoint.Y = currentState.nextPoint.Y;
displacement(currentState.nextPoint, 40, 0);
rotate(currentState.nextPoint, currentState.prevPoint, currentState.angle);
}
else if (actions[i] == '-')
{
rotate(currentState.nextPoint, currentState.prevPoint, angle);
currentState.angle += angle;
}
else if (actions[i] == '+')
{
rotate(currentState.nextPoint, currentState.prevPoint, -angle);
currentState.angle -= angle;
}
else if (actions[i] == '[')
{
stack.Push(new State(currentState.angle,
new My_point(currentState.prevPoint.X, currentState.prevPoint.Y),
new My_point(currentState.nextPoint.X, currentState.nextPoint.Y)));
}
else if (actions[i] == ']')
{
State prevState = stack.Pop();
currentState.angle = prevState.angle;
currentState.prevPoint = prevState.prevPoint;
currentState.nextPoint = prevState.nextPoint;
}
}
}
/// <summary>
/// Изменение масштаба заданной фигуры
/// </summary>
private void butt_sc_Click(object sender, EventArgs e)
{
My_point center = centerPoint();
double kx = (double)set_sc_x.Value;
double ky = (double)set_sc_y.Value;
center_point = centerPoint();
foreach (My_point p in points)
{
p.X -= center_point.X;
p.Y -= center_point.Y;
p.X = (int)(p.X * kx);
p.Y = (int)(p.Y * ky);
p.X += center_point.X;
p.Y += center_point.Y;
}
redrawImage();
}
public State(double a, My_point pp, My_point np)
{
angle = a;
prevPoint = pp;
nextPoint = np;
}
public bool contains(My_point p)
{
return(p == P1 || p == P2);
}
public edge(My_point p1, My_point p2)
{
P1 = p1; P2 = p2;
}
// смещение
private void displacement(My_point p, int kx, int ky)
{
p.X += kx;
p.Y += ky;
}