/// <summary>
/// Computes the velocity of a joint given the joint history
/// </summary>
/// <param name="type">The type of joint to compute the velocity of</param>
/// <returns>A vector containing the velocity of the joint</returns>
private Vector ComputeJointVelocity(JointType type)
{
SkeletonPoint oldPt = pointConverter.ConvertPoint(this.skeletalHistory.First().Skeleton.Joints[type].Position);
SkeletonPoint newPt = pointConverter.ConvertPoint(this.skeletalHistory.Last().Skeleton.Joints[type].Position);
return(Point.Subtract(newPt.To2DPoint(), oldPt.To2DPoint()) / this.maxTimeToLive * 100); // Want the velocity for the past 50ms
}
private void HandlePushEvent(SkeletonPoint pt, bool isPlayerOne)
{
if (selectingBall)
{
return;
}
SeesawObject pushedBall = null;
PointCanvas ballHolder = null;
var heldBalls = isPlayerOne ? game.PlayerOneHeldBalls : game.PlayerTwoHeldBalls;
var ballHolders = isPlayerOne ? _playerOneBallHolders : _playerTwoBallHolders;
foreach (var holder in ballHolders)
{
Rect rect = holder.GetBoundaryRect();
if (rect.Contains(pt.To2DPoint()))
{
if (holder.Children.Count > 0)
{
pushedBall = (SeesawObject)holder.Children[0];
ballHolder = holder;
}
}
}
if (pushedBall != null)
{
int index = heldBalls.IndexOf(pushedBall);
HitBall(index, new Vector(0, 0), isPlayerOne);
}
}
/// <summary>
/// Checks whether the joint hit a rectangle and if so, return the index of the rect it hit
/// </summary>
/// <param name="skelPt">The skeleton point to check</param>
/// <returns>The index of the rectangle hit if found; otherwise -1</returns>
private int HitTestRects(SkeletonPoint skelPt)
{
Point pt = skelPt.To2DPoint();
for (int i = 0; i < HitRectangles.Count; i++)
{
if (HitRectangles[i].Contains(pt))
{
return(i);
}
}
return(-1);
}