public bool IsOnShortLine(clsPoint3d pt1, double aTol = 0, bool excludeEnds = false)
{
clsLine3d l1 = default(clsLine3d);
clsLine3d l2 = default(clsLine3d);
double d = 0;
if (aTol == 0)
{
aTol = mdlGeometry.myTol;
}
if (Abs(DistanceToPoint(pt1)) > aTol)
{
return(false);
}
l1 = new clsLine3d(P1, pt1);
l2 = Copy();
l2.Normalise();
d = l1.Dot(l2);
if (d < -aTol)
{
return(false);
}
if (d > Length + aTol)
{
return(false);
}
if (excludeEnds && (P1 == pt1 | P2 == pt1))
{
return(false);
}
return(true);
}
public clsPoint3d DistanceAlongLine(double d)
{
clsLine3d l1 = default(clsLine3d);
l1 = Copy();
l1.Normalise();
return(new clsPoint3d(X1 + d * l1.DX(), Y1 + d * l1.DY(), Z1 + d * l1.DZ()));
}
public double Lambda(clsPoint3d pt1)
{
clsLine3d l1 = default(clsLine3d);
clsLine3d l2 = default(clsLine3d);
l1 = new clsLine3d(P1, pt1);
l2 = Copy();
l2.Normalise();
return(l1.Dot(l2) / Length);
}
public static clsPoint3d ProjectPoint(clsPoint3d p1, clsLine3d l1)
{
double d1 = 0;
clsLine3d l2 = new clsLine3d();
clsLine3d l3 = new clsLine3d();
l2 = l1.Copy();
l2.Normalise();
l3 = new clsLine3d(l1.P1, p1);
d1 = l2.Dot(l3);
l2.Length = d1;
return(l2.P2);
}
public double DistanceToPoint(clsPoint3d aPt)
{
double d1 = 0;
double d2 = 0;
clsLine3d l2 = default(clsLine3d);
clsLine3d l3 = default(clsLine3d);
l2 = Copy();
l2.Normalise();
l3 = new clsLine3d(P1, aPt);
d1 = l2.Dot(l3);
d2 = l3.Length;
return(Sqrt(Pow(d2, 2) - Pow(d1, 2)));
}
public static double Dist3d(clsPoint3d p1, clsLine3d l1)
{
double d1 = 0;
double d2 = 0;
clsLine3d l2 = new clsLine3d();
clsLine3d l3 = new clsLine3d();
l2 = l1.Copy();
l2.Normalise();
l3 = new clsLine3d(l1.P1, p1);
d1 = l2.Dot(l3);
d2 = l3.Length;
return(Sqrt(Pow(d2, 2) - Pow(d1, 2)));
}
