public bool Intersect(NuGenRay3F r)
{
bool inside = true;
int [] quadrant = new int[3];
int i;
int whichPlane;
float [] max = new float[3];
float [] candidatePlane = new float[3];
NuGenVec3D coord = new NuGenVec3D(0,0,0);
for (i = 0; i < 3; i++)
{
if (r.Point[i] < lower[i])
{
quadrant[i] = 1;
candidatePlane[i] = lower[i];
inside = false;
}
else if (r.Point[i] > upper[i])
{
quadrant[i] = 0;
candidatePlane[i] = upper[i];
inside = false;
}
else
{
quadrant[i] = 2;
}
}
if (inside) return true;
for (i = 0; i < 3; i++)
{
if (quadrant[i] != 2 && r.Direction[i] != 0.0)
{
max[i] = (candidatePlane[i]-r.Point[i]) / r.Direction[i];
}
else
{
max[i] = -1.0f;
}
}
whichPlane = 0;
for (i = 1; i < 3; i++)
{
if (max[whichPlane] < max[i]) whichPlane = i;
}
if (max[whichPlane] < 0.0) return false;
for (i = 0; i < 3; i++)
{
if (whichPlane != i)
{
coord[i] = r.Point[i] + max[whichPlane] * r.Direction[i];
if (coord[i] < lower[i] || coord[i] > upper[i])
{
return false;
}
}
else
{
coord[i] = candidatePlane[i];
}
}
return true;
}
public bool Intersect(NuGenRay3F r)
{
bool inside = true;
int [] quadrant = new int[3];
int i;
int whichPlane;
float [] max = new float[3];
float [] candidatePlane = new float[3];
NuGenVec3D coord = new NuGenVec3D(0, 0, 0);
for (i = 0; i < 3; i++)
{
if (r.Point[i] < lower[i])
{
quadrant[i] = 1;
candidatePlane[i] = lower[i];
inside = false;
}
else if (r.Point[i] > upper[i])
{
quadrant[i] = 0;
candidatePlane[i] = upper[i];
inside = false;
}
else
{
quadrant[i] = 2;
}
}
if (inside)
{
return(true);
}
for (i = 0; i < 3; i++)
{
if (quadrant[i] != 2 && r.Direction[i] != 0.0)
{
max[i] = (candidatePlane[i] - r.Point[i]) / r.Direction[i];
}
else
{
max[i] = -1.0f;
}
}
whichPlane = 0;
for (i = 1; i < 3; i++)
{
if (max[whichPlane] < max[i])
{
whichPlane = i;
}
}
if (max[whichPlane] < 0.0)
{
return(false);
}
for (i = 0; i < 3; i++)
{
if (whichPlane != i)
{
coord[i] = r.Point[i] + max[whichPlane] * r.Direction[i];
if (coord[i] < lower[i] || coord[i] > upper[i])
{
return(false);
}
}
else
{
coord[i] = candidatePlane[i];
}
}
return(true);
}