c# - 关节行进的距离

Question

我有以下问题：我需要代码来冻结关节的第一个位置，因为我想用它来计算距离我该怎么做？

Answer 1

您可能正在寻找一些看起来像这样的代码（警告：未经测试的代码）：

private SkeletonPoint _jointInitial;
private bool _initialized;

void MyMethodThatProcessesJoints(Joint joint)
{
    if (!_initialized)
    {
        _jointInitial = joint.Position;
        _initialized = true;
    }
    else
    {
        var pos = joint.Position;

        var dx = pos.X - _jointInitial.X;
        var dy = pos.Y - _jointInitial.Y;

        var distance = Math.Sqrt(dx * dx + dy * dy);
        // do something with distance...
    }       
}