public void Calculate(ViewArgs args)
{
points = new Vector2[valuePoints.Count];
for (int i = 0; i < points.Length; i++)
{
points[i] = args.ToView(valuePoints[i]);
}
Offset = new Vector2();
}
public void Recalculate(ViewArgs args)
{
int pixelPointsLength, pixelPointsIndex = 0;
float selectValueMin, valuesValueWidth, valuePerRawPixelX,
selectValueMax, rawPixelXPerValues, rawPixelWidth, valueWidth;
if (valuePoints.Count < 2)
{
return;
}
rawPixelWidth = args.PixelSize.RawPixelWidth;
valueWidth = args.ValueDimensions.Width;
valuesValueWidth = valuePoints[valuePoints.Count - 1].X - valuePoints[0].X;
pixelPointsLength = Convert.ToInt32(rawPixelWidth * valuesValueWidth / valueWidth) + 1;
points = new Vector2[pixelPointsLength];
valuePerRawPixelX = valueWidth / rawPixelWidth;
rawPixelXPerValues = valuesValueWidth / (valuePoints.Count - 1) / valuePerRawPixelX;
selectValueMin = (1 - rawPixelXPerValues) / 2F * valuePerRawPixelX;
selectValueMax = (1 + rawPixelXPerValues) / 2F * valuePerRawPixelX;
for (int i = 0; i < valuePoints.Count && pixelPointsIndex < pixelPointsLength; i++)
{
Vector2 curValue = valuePoints[i];
float nearAllowedValue = (curValue.X % valuePerRawPixelX + valuePerRawPixelX) % valuePerRawPixelX;
if (selectValueMin <= nearAllowedValue && nearAllowedValue < selectValueMax)
{
points[pixelPointsIndex] = args.ToView(curValue);
pixelPointsIndex++;
}
}
Offset = new Vector2();
}