public HandData(int id, Shape shape, Palm palm, IList<FingerPoint> fingerPoints)
{
this.id = id;
this.shape = shape;
this.palm = palm;
this.fingerPoints = fingerPoints;
}
private HandData Create(int id, Shape shape, IList<FingerPoint> lastFrameFingerPoints)
{
var newFingerPoints = this.DetectFingerPoints(shape.ConvexHull, shape.Contour);
var fingerPoints = this.MapFingerPoints(lastFrameFingerPoints, newFingerPoints);
var palm = DetectPalm(shape, shape.Contour);
if (settings.DetectFingerDirection)
{
new FingerBaseDetector().Detect(shape.Contour, fingerPoints);
}
return new HandData(id, shape, palm, fingerPoints);
}
private HandData Create(HandData lastFrameData, Shape shape)
{
return this.Create(lastFrameData.Id, shape, lastFrameData.FingerPoints);
}
private HandData Create(Shape shape)
{
return this.Create(idGenerator.GetNextId(), shape, new List<FingerPoint>());
}
private Palm DetectPalm(Shape shape, Contour contour)
{
var candidates = shape.Points;
Palm palm = null;
if (this.settings.DetectCenterOfPalm && shape.PointCount > 0 && contour.Count > 0)
{
palm = this.palmFinder.FindCenter(contour, shape.Points);
}
return palm;
}
private HandData Create(int id, Shape shape, IList<FingerPoint> lastFrameFingerPoints)
{
var newFingerPoints = this.DetectFingerPoints(shape);
var fingerPoints = this.MapFingerPoints(lastFrameFingerPoints, newFingerPoints);
var palm = DetectPalm(shape, shape.Contour);
if (settings.DetectFingerDirection)
{
this.fingerBaseDetector.Detect(shape.Contour, fingerPoints);
}
var handData = new HandData(id, shape, palm, fingerPoints.Where(f => f.FrameCount >= this.settings.FramesForNewFingerPoint).ToList())
{
NewlyDetectedFingerPoints = fingerPoints.Where(f => f.FrameCount < this.settings.FramesForNewFingerPoint).ToList()
};
return handData;
}
private HandData Create(HandData lastFrameData, Shape shape)
{
return this.Create(lastFrameData.Id, shape, lastFrameData.FingerPoints.Union(lastFrameData.NewlyDetectedFingerPoints).ToList());
}
private IList<FingerPoint> DetectFingerPoints(Shape shape)
{
if (!this.settings.DetectFingers)
{
return new List<FingerPoint>();
}
var result = this.fingerPointDetector.FindFingerPoints(shape.Contour, shape.ConvexHull)
.Where(i => i.Location.Y <= shape.Location.Y).ToList();
return result;
}
