public void Recalculate(ViewArgs args)
{
int pointsCount = Convert.ToInt32(args.PixelSize.RawPixelWidth *
DrawControl.PixelBufferFactor * DrawControl.PixelBufferFactor);
points = new Vector2[pointsCount];
minX = args.ValueDimensions.Middle.X -
args.ValueDimensions.Width * DrawControl.PixelBufferFactor / 2;
deltaX = args.ValueDimensions.Width * DrawControl.PixelBufferFactor / pointsCount;
Parallel.For(0, pointsCount, new Action <int, ParallelLoopState>(CalculateIntoPoints));
if (points.Length > 0)
{
ValuePointNode node = new ValuePointNode(null, points[points.Length - 1]);
for (int i = points.Length - 2; i >= 0; i--)
{
node = new ValuePointNode(node, points[i]);
}
ViewBeginNode = node;
while (node.Next != null)
{
node.Next.Previous = node;
node = node.Next;
}
}
else
{
ViewBeginNode = null;
}
}
public IEnumerable <Vector2> GetValues(float beginX, float rangeX, float endX)
{
float lowerX = beginX - rangeX / 2f;
float upperX = beginX;
if (ViewBeginNode == null || ViewBeginNode.Value.X >= upperX)
{
InsertAtBeginning(Calculate((lowerX + upperX) / 2f));
}
ValuePointsEnumerator enumerator = new ValuePointsEnumerator(ViewBeginNode);
while (true)
{
while (enumerator.MoveNext() && enumerator.Current.X < lowerX)
{
;
}
if (enumerator.CurrentNode == null)
{
break;
}
if (enumerator.Current.X >= upperX)
{
InsertAfter(enumerator.PreviousNode, Calculate((lowerX + upperX) / 2f));
enumerator.RefreshCurrentNode();
}
yield return(enumerator.Current);
if (lowerX >= endX)
{
yield break;
}
lowerX += rangeX;
upperX += rangeX;
}
ValuePointNode last = enumerator.PreviousNode;
while (true)
{
last = InsertAfter(last, Calculate((lowerX + upperX) / 2f));
yield return(last.Value);
if (lowerX >= endX)
{
yield break;
}
lowerX += rangeX;
upperX += rangeX;
}
}
private ValuePointNode InsertAfter(ValuePointNode node, Vector2 point)
{
ValuePointNode newNode = new ValuePointNode(node.Next, point);
if (node.Next != null)
{
node.Next.Previous = newNode;
}
node.Next = newNode;
return(newNode);
}
private void InsertAtBeginning(Vector2 point)
{
ValuePointNode newFirst = new ValuePointNode(ViewBeginNode, point);
if (ViewBeginNode != null)
{
ViewBeginNode.Previous = newFirst;
ViewBeginNode = newFirst;
}
else
{
ViewBeginNode = newFirst;
}
}
public ValuePointNode(ValuePointNode next, Vector2 value)
{
Next = next;
Value = value;
}
public void Reset()
{
PreviousNode = null;
CurrentNode = new ValuePointNode(firstNode, default(Vector2));
}
public ValuePointsEnumerator(ValuePointNode first)
{
firstNode = first;
Reset();
}
