public static Point CalculateCurrentCirclePosition(int secondsBefore, int milisecondsBefore, Circle c)
{
DateTime now = DateTime.Now;
double timeElapsed;
if (now.Second != secondsBefore)
{
timeElapsed = (now.Millisecond + 1000 - milisecondsBefore);
}
else
{
timeElapsed = (now.Millisecond - milisecondsBefore);
}
return c.Position + c.StrengthVector * timeElapsed * speedOfMoving;
}
public static Vector CalculateForceVector(Circle c, ICollection<Circle> circles)
{
Vector resultantForce = new Vector();
foreach(Circle i in circles)
{
double distance = Circle.CountDistance(i, c);
if (repelRange >= distance && distance != 0)
{
Vector v = new Vector(c.Position.X - i.Position.X, c.Position.Y - i.Position.Y);
resultantForce += (v * 1 / distance); // inverserly to distance.
}
}
// System.Diagnostics.Debug.WriteLine("accidental strength "+accidentalStrength);
return resultantForce;
}
public static Circle CreateVertex(Point position, DrawingState state)
{
Circle circle = new Circle(position);
state.controller.AddVertex(circle);
Ellipse ellipse = circle.ellipse;
ellipse.MouseDown += (object a, MouseButtonEventArgs b) =>
{
if (state.currentTool == DrawingState.Tool.DRAW_EDGE)
{
if (state.firstCircle == null)
state.firstCircle = circle;
else if (state.secondCircle != null)
state.firstCircle = circle;
else
state.secondCircle = circle;
}
else
{
state.firstCircle = state.secondCircle = null;
}
};
//TODO - choose hover effect, do when styling
ellipse.MouseEnter += (object o, MouseEventArgs e) =>
{
if (state.currentTool == DrawingState.Tool.DRAW_EDGE)
{
ellipse.Fill = new SolidColorBrush(Color.FromRgb(0, 0, 0));
}
};
ellipse.MouseLeave += (object o, MouseEventArgs e) =>
{
ellipse.Fill = new SolidColorBrush(Color.FromArgb(255, 0, 150, 0));
};
state.canvas.Children.Add(ellipse);
return circle;
}
public static bool DetectColision(Circle a, Circle b)
{
var r1 = a.ellipse.Width/2;
var r2 = b.ellipse.Width/2;
return CountDistance(a, b) < r1 + r2;
}
public static double CountDistance(Circle a, Circle b)
{
return Math.Sqrt((a.Position.X - b.Position.X) * (a.Position.X - b.Position.X) +
(a.Position.Y - b.Position.Y) * (a.Position.Y - b.Position.Y));
}
public void RestoreEdge(Circle one, Circle two)
{
state.firstCircle = one;
state.secondCircle = two;
LineDrawer.CreateEdge(state);
}
public static void UpdateForceVector(Circle c, ICollection<Circle> circles)
{
c.StrengthVector = CalculateForceVector(c, circles);
}
public static void UpdateCurrentCirclePosition(int secondsBefore, int milisecondsBefore, Circle c)
{
c.Position = CalculateCurrentCirclePosition(secondsBefore, milisecondsBefore, c);
}