/// <summary>
/// 计算点积
/// </summary>
/// <param name="value"></param>
/// <param name="b"></param>
/// <returns></returns>
public OsuPixel Calc(double value, OsuPixel b)
{
var ax = x + value * b.x;
var ay = y + value * b.y;
return(new OsuPixel(ax, ay));
}
/// <summary>
/// 计算两点间的距离
/// </summary>
/// <param name="a"></param>
/// <returns></returns>
public double Distance(OsuPixel a)
{
var innerX = x - a.x;
var innerY = y - a.y;
return(Math.Sqrt(innerX * innerX + innerY * innerY));
}