/// <summary>
/// 点导几何元素的投影点
/// </summary>
/// <param name="pt"></param>
/// <returns></returns>
public virtual Double3 ProjectPoint(Double3 pt)
{
Double3 diff = pt - this.Pt;
return(pt - Double3.ProjectOnPlane(diff, this.NormalizedNormal));
}
/// <summary>
/// 点导几何元素的距离
/// </summary>
/// <param name="pt"></param>
/// <returns></returns>
public virtual double CalcDistance(Double3 pt)
{
Double3 diff = pt - this.Pt;
return(Double3.ProjectOnPlane(diff, this.NormalizedNormal).magnitude);
}