Question

I am new to programming using official Kinect SDK 1.5 in XNA. How do I map the Skeleton joint’s position to the XNA 2D screen to match the image stream?

Answer 1

This is quite easy since the Kinect SDK provides some Mapping helper methods.

MapSkeletonPointToColor will gives you the position of a SkeletonPoint in a 2D color frame. You just jave to pass two arguments : your skeleton point, and the target color frame format.

foreach (Joint joint in skeleton.Joints)
{
    // Transforms a SkeletonPoint to a ColorImagePoint
    var colorPoint = Kinect.MapSkeletonPointToColor(joint.Position, Kinect.ColorStream.Format);

    // colorPoint has two properties : X and Y which gives you the positions in the 2D color frame.
    // TODO : Do something with the colorPoint value. 
}