protected override void OnLoad(EventArgs e)
{
GL.ClearColor(Color.Wheat);
Rescale();
_defaultDrawList = PythagorasSets.GetSets(DefaultIterations, SquareSize).SelectMany(i => i).ToList();
CalcData();
}
private void CalculateVisiblePythagorasSetsThread()
{
if (_iterations < DefaultIterations)
{
_calculatingVisiblePythagorasSetsThread = null;
return;
}
/*
* Find visible squares at the Nth iteration.
*/
List <Pythagoras> current =
PythagorasSets.GetSet(DefaultIterations - 1, SquareSize)
.Where(
py =>
py.LeftSquare.Any(p => _viewport.IsNear(p, 50 / _scale)) ||
py.RightSquare.Any(p => _viewport.IsNear(p, 50 / _scale)))
.ToList();
for (int i = DefaultIterations; i < _iterations; i++)
{
var next = current.SelectMany(p => p.Next());
/*
* .ToArray to make sure .Where ran before we lock the list.
*/
Pythagoras[] visible =
next.Where(p => p.LeftSquare.Any(_viewport.Contains) || p.RightSquare.Any(_viewport.Contains))
.ToArray();
lock (_drawListLocker)
{
_drawList.AddRange(visible);
}
/*
* Keep iteration for next iteration's reference.
*/
current = next.ToList();
}
}