/// <summary>
/// Returns a dto representation of the instance.
/// </summary>
/// <returns>The converted dto.</returns>
public LedImageDto ToDto()
{
return(new LedImageDto()
{
Leds = Leds.Select(
x => new RgbColorDto()
{
R = x.R,
G = x.G,
B = x.B,
}).ToArray(),
TransitionTime = TransitionTime
});
}
public void Calculate(ScreenFrame frame)
{
var pixels = frame.Pixels;
var stride = frame.Width * 4;
var leds = new List <Led>();
if (frame.Width != _w || frame.Height != _h || frame.Margins != _margins)
{
_w = frame.Width;
_h = frame.Height;
_margins = frame.Margins;
var letterbox = new Rect(_margins.Left, _margins.Top, _w - _margins.Left - _margins.Right, _h - _margins.Top - _margins.Bottom);
foreach (var s in _ledStrips)
{
if (s.LedCount < 2)
{
continue;
}
var letterboxDistance = (s.IsHorizontal ? letterbox.Width : letterbox.Height) * (s.PercentEnd - s.PercentStart) / (s.LedCount - 1);
var screenDistance = (s.IsHorizontal ? _w : _h) * (s.PercentEnd - s.PercentStart) / (s.LedCount - 1);
var spotWidth = Math.Abs(letterboxDistance * s.SpotWidthMultiplier);
var spotHeight = Math.Abs(letterboxDistance * s.SpotHeightMultiplier);
Point letterboxPoint;
Point screenPoint;
Point connectorPoint;
switch (s.Location)
{
case LetStripLocation.Left:
connectorPoint = new Point(letterbox.Left, letterbox.Top + letterbox.Height * s.PercentStart);
letterboxPoint = new Point(connectorPoint.X + spotWidth / 2, connectorPoint.Y);
screenPoint = new Point(0, _h * s.PercentStart);
break;
case LetStripLocation.Top:
connectorPoint = new Point(letterbox.Left + letterbox.Width * s.PercentStart, letterbox.Top);
letterboxPoint = new Point(connectorPoint.X, connectorPoint.Y + spotHeight / 2);
screenPoint = new Point(_w * s.PercentStart, 0);
break;
case LetStripLocation.Right:
connectorPoint = new Point(letterbox.Right, letterbox.Top + letterbox.Height * s.PercentStart);
letterboxPoint = new Point(connectorPoint.X - spotWidth / 2, connectorPoint.Y);
screenPoint = new Point(_w, _h * s.PercentStart);
break;
case LetStripLocation.Bottom:
connectorPoint = new Point(letterbox.Left + letterbox.Width * s.PercentStart, letterbox.Bottom);
letterboxPoint = new Point(connectorPoint.X, connectorPoint.Y - spotHeight / 2);
screenPoint = new Point(_w * s.PercentStart, _h);
break;
default:
throw new ArgumentOutOfRangeException();
}
var letterboxOffset = s.IsHorizontal ? new Point(letterboxDistance, 0) : new Point(0, letterboxDistance);
var screenOffset = s.IsHorizontal ? new Point(screenDistance, 0) : new Point(0, screenDistance);
for (var i = 0; i < s.LedCount; i++)
{
leds.Add(new Led
{
GrabArea = Rect.Intersect(new Rect(letterboxPoint.X - spotWidth / 2, letterboxPoint.Y - spotHeight / 2, spotWidth, spotHeight), letterbox),
Location = screenPoint,
ConnectorPoint = connectorPoint
});
letterboxPoint.Offset(letterboxOffset.X, letterboxOffset.Y);
connectorPoint.Offset(letterboxOffset.X, letterboxOffset.Y);
screenPoint.Offset(screenOffset.X, screenOffset.Y);
}
}
}
else
{
leds = Leds.Select(_ => new Led
{
GrabArea = _.GrabArea,
ConnectorPoint = _.ConnectorPoint,
Location = _.Location
}).ToList();
}
Parallel.ForEach(leds, (led, state, i) =>
{
var rect = led.GrabArea.IsEmpty
? Int32Rect.Empty
: new Int32Rect((int)Math.Floor(led.GrabArea.X), (int)Math.Floor(led.GrabArea.Y), (int)Math.Ceiling(led.GrabArea.Width),
(int)Math.Ceiling(led.GrabArea.Height));
if (rect.IsEmpty)
{
led.Color = Colors.Black;
}
else
{
var sr = 0d;
var sg = 0d;
var sb = 0d;
var u = rect.Y * stride + rect.X * 4;
for (var y = 0; y < rect.Height; y++)
{
for (var x = 0; x < rect.Width; x++)
{
var b = pixels[u++];
var g = pixels[u++];
var r = pixels[u++];
u++;
sr += r;
sg += g;
sb += b;
}
u += stride - rect.Width * 4;
}
var pc = rect.Width * rect.Height;
led.Color = Color.FromArgb(255, (byte)(sr / pc), (byte)(sg / pc), (byte)(sb / pc));
}
});
if (Leds != null && (leds.Count != Leds.Length || Enumerable.Range(0, leds.Count).Any(i => leds[i].Color != Leds[i].Color || leds[i].GrabArea != Leds[i].GrabArea)))
{
LastUpdated = DateTime.Now;
}
Leds = leds.ToArray();
}
