/// <summary>
/// Extract the concatenated feature vector from a skeleton
/// </summary>
/// <param name="s">A processed Skeleton</param>
/// <returns>The concatenated feature vector</returns>
public static double[] FeatureSet(Skeleton s)
{
SkeletonFeatureFrame sff = new SkeletonFeatureFrame(s);
var features = new double[31];
int nextFreeIndex = 0;
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.ArmLeft, features, nextFreeIndex);
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.ArmRight, features, nextFreeIndex);
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.ForeArmLeft, features, nextFreeIndex);
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.ForeArmLeft, features, nextFreeIndex);
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.HandLeft, features, nextFreeIndex);
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.HandRight, features, nextFreeIndex);
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.ShoulderBladeLeft, features, nextFreeIndex);
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.ShoulderBladeRight, features, nextFreeIndex);
nextFreeIndex = AddFeat(sff, SkeletonFeatureFrame.DirectionVectors.BetweenHands, features, nextFreeIndex);
features[nextFreeIndex++] = sff.Angle(SkeletonFeatureFrame.Angles.AngleElbowLeft);
features[nextFreeIndex++] = sff.Angle(SkeletonFeatureFrame.Angles.AngleElbowRight);
features[nextFreeIndex++] = sff.Angle(SkeletonFeatureFrame.Angles.AngleShoulderLeft);
features[nextFreeIndex++] = sff.Angle(SkeletonFeatureFrame.Angles.AngleShoulderRight);
if (nextFreeIndex != features.Length) throw new Exception("Missing features");
return features;
}
