static bool Intersect(PlanktonLine lineA, PlanktonLine lineB, out float lineA_parameter, out float lineB_parameter)
{
bool rc = true;
if (lineA.m_from == lineB.m_from)
{
lineA_parameter = 0f;
lineB_parameter = 0f;
}
else if (lineA.m_from == lineB.m_to)
{
lineA_parameter = 0f;
lineB_parameter = 1f;
}
else if (lineA.m_to == lineB.m_from)
{
lineA_parameter = 1f;
lineB_parameter = 0f;
}
else if (lineA.m_to == lineB.m_to)
{
lineA_parameter = 1f;
lineB_parameter = 1f;
}
else
{
lineA_parameter = 0.5f;
lineB_parameter = 0.5f;
////计算
}
return rc;
}
public float MaximumDistanceTo(PlanktonLine L)
{
float a, b;
a = MaximumDistanceTo(L.m_from);
b = MaximumDistanceTo(L.m_to);
return ((a < b) ? b : a);
}
public float MinimumDistanceTo(PlanktonLine L)
{
//公垂线
PlanktonXYZ A, B;
float a, b, t = 0, x = 0, d = 0;
bool bCheckA, bCheckB;
bool bGoodX = Intersect(this, L, out a, out b);
bCheckA = true;
if (a < 0f) a = 0f; else if (a > 1f) a = 1f; else bCheckA = !bGoodX;
bCheckB = true;
if (b < 0f) b = 0f; else if (b > 1f) b = 1f; else bCheckB = !bGoodX;
A = PointAt(a);
B = L.PointAt(b);
d = A.DistanceTo(B);
if (bCheckA)
{
L.ClosestPointTo(A, ref t);
if (t < 0f) t = 0f; else if (t > 1f) t = 1f;
x = L.PointAt(t).DistanceTo(A);
if (x < d)
d = x;
}
if (bCheckB)
{
ClosestPointTo(B, ref t);
if (t < 0f) t = 0f; else if (t > 1f) t = 1f;
x = PointAt(t).DistanceTo(B);
if (x < d)
d = x;
}
return d;
}
public bool Equals(PlanktonLine other)
{
return (this == other);
}
