private void HandleMouseUp(int x, int y)
{
var point = new ClickPoint
{
X = x,
Y = y
};
var isMoved = point.Distance(StartPoint) > MinDistance;
if(isMoved)
{
point.SelectedClickMode = (int)ClickMode.Release;
CreatePoint(point);
DrawTraectory(StartPoint, x, y, true);
CurrentTraectoryLine = null;
}
else
{
StartPoint.SelectedClickMode = (int)ClickMode.PushAndRelease;
Canvas.Children.Remove(CurrentTraectoryLine);
}
StartPoint = null;
}
private void RemovePoint(ClickPoint point)
{
Points.Remove(point);
}
private void HandleMouseDown(int x, int y)
{
StartPoint = new ClickPoint
{
X = x,
Y = y,
SelectedClickMode = (int)ClickMode.Push
};
CreatePoint(StartPoint);
}
private void DrawTraectory(ClickPoint from, int toX, int toY, bool adjustTrarget = false)
{
if(!Canvas.Children.Contains(CurrentTraectoryLine))
{
Canvas.Children.Add(CurrentTraectoryLine);
}
var angle = from.Angle(toX, toY);
var fullSize = CircleSize - BorderSize;
var xOffset = fullSize / 2 * Math.Sin(angle);
var yOffset = fullSize / 2 * Math.Cos(angle);
CurrentTraectoryLine.X1 = from.X + xOffset;
CurrentTraectoryLine.Y1 = from.Y + yOffset;
CurrentTraectoryLine.X2 = toX - (adjustTrarget ? xOffset : 0);
CurrentTraectoryLine.Y2 = toY - (adjustTrarget ? yOffset : 0);
}
private void CreatePoint(ClickPoint point)
{
Points.Add(point);
AddCircleAtPosition(Points.Count, point);
}
private void AddCircleAtPosition(int index, ClickPoint p)
{
var border = new Border
{
BorderBrush = StrokeBrush,
Background = BackgroundBrush,
Width = CircleSize,
Height = CircleSize,
BorderThickness = new Thickness(BorderSize),
CornerRadius = new CornerRadius(360),
Opacity = DefaultOpacity,
Child = new Viewbox
{
Child = new TextBlock
{
Text = index.ToString(),
VerticalAlignment = VerticalAlignment.Center,
HorizontalAlignment = HorizontalAlignment.Center,
Padding = new Thickness(3)
}
}
};
Canvas.Children.Add(border);
Canvas.SetLeft(border, p.X - border.Width / 2);
Canvas.SetTop(border, p.Y - border.Height / 2);
}
public double Distance(ClickPoint toPoint)
{
return Sqrt(Pow(X - toPoint.X, 2) + Pow(Y - toPoint.Y, 2));
}