/// <summary>
/// 判断点是否在直线上
/// </summary>
/// <param name="p"></param>
/// <param name="l"></param>
/// <returns></returns>
public static bool IsOnLine(this XYZ p, Line l)
{
XYZ end1 = l.GetEndPoint(0);
XYZ end2 = l.GetEndPoint(1);
XYZ vec_pToEnd1 = end1 - p;
XYZ vec_pToEnd2 = end2 - p;
if (p.DistanceTo(end1) < precision || p.DistanceTo(end2) < precision)
{
return(true);
}
if (vec_pToEnd1.IsOppositeDirection(vec_pToEnd2))
{
return(true);
}
return(false);
}
public static bool IsParallel(this XYZ vector1, XYZ vector2)
{
return(vector1.IsSameDirection(vector2) || vector1.IsOppositeDirection(vector2));
}