/// <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.StartPoint;
if (diff == Double3.zero)
{
return(pt);
}
return(Double3.Project(diff, this.NormalizedDir) + this.StartPoint);
}
/// <summary>
/// 求轴向量
/// </summary>
/// <param name="pt"></param>
/// <returns></returns>
public virtual Double3 AixsVector(Double3 pt)
{
Double3 diff = pt - this.StartPoint;
if (diff == Double3.zero)
{
return(Double3.zero);
}
return(diff - Double3.Project(diff, this.NormalizedDir));
}
/// <summary>
/// 求轴向量
/// </summary>
/// <param name="pt"></param>
/// <returns></returns>
public virtual Double3 AixsVector(Double3 pt)
{
Double3 diff = pt - this.Pt;
return(Double3.Project(diff, this.NormalizedNormal));
}