private Point GetPointFromPosition(TimedPosition position)
{
double x = PositionToX(position.TimeStamp);
double y = PositionToY(position.Position);
return(new Point(x, y));
}
private void UpdateSelectedPosition()
{
TimedPosition pos = GetPositionFromPoint(_mousePos);
_position.TimeStamp = pos.TimeStamp;
_position.Position = pos.Position;
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
if (IsReadOnly)
{
return;
}
_mousePos = e.GetPosition(this);
TimeSpan timeFrom = Progress - TotalDisplayedDuration.Multiply(Midpoint);
TimeSpan timeTo = Progress + TotalDisplayedDuration.Multiply(1 - Midpoint);
List <TimedPosition> absoluteBeatPositions = Positions.GetPositions(timeFrom, timeTo).ToList();
double minDist = double.MaxValue;
TimedPosition closest = null;
foreach (TimedPosition position in absoluteBeatPositions)
{
double distance = GetPointFromPosition(position).DistanceTo(_mousePos);
if (distance < minDist)
{
closest = position;
minDist = distance;
}
}
if (closest == null)
{
return;
}
if (minDist > 20)
{
return;
}
_position = closest;
_down = true;
CaptureMouse();
}
public static void GetMinMaxPositions(List <TimedPosition> positions, out List <TimedPosition> min, out List <TimedPosition> max)
{
min = new List <TimedPosition>();
max = new List <TimedPosition>();
if (positions == null || positions.Count < 1)
{
return;
}
TimeSpan start = positions[0].TimeStamp;
TimeSpan duration = positions.Last().TimeStamp - start;
int lastExtremeIndex = -1;
byte lastValue = positions[0].Position;
byte lastExtremeValue = lastValue;
byte lowest = lastValue;
byte highest = lastValue;
bool?goingUp = null;
for (int index = 0; index < positions.Count; index++)
{
// Direction unknown
if (goingUp == null)
{
if (positions[index].Position < lastExtremeValue)
{
goingUp = false;
}
else if (positions[index].Position > lastExtremeValue)
{
goingUp = true;
}
}
else
{
if ((positions[index].Position < lastValue && (bool)goingUp) || //previous was highpoint
(positions[index].Position > lastValue && (bool)!goingUp) || //previous was lowpoint
(index == positions.Count - 1)) //last action
{
for (int i = lastExtremeIndex + 1; i < index; i++)
{
TimedPosition action = positions[i].Duplicate();
if (positions[i].Position == lowest)
{
min.Add(action);
}
else if (positions[i].Position == highest)
{
max.Add(action);
}
// Only extreme Values for now ...
}
lastExtremeValue = positions[index - 1].Position;
lastExtremeIndex = index - 1;
highest = lastExtremeValue;
lowest = lastExtremeValue;
goingUp ^= true;
}
}
lastValue = positions[index].Position;
if (lastValue > highest)
{
highest = lastValue;
}
if (lastValue < lowest)
{
lowest = lastValue;
}
}
var last = positions.Last();
if (lastExtremeValue < last.Position)
{
max.Add(last.Duplicate());
}
else
{
min.Add(last.Duplicate());
}
}