static bool IntersectRayAABB(Ray ray, Bounds inAABB, out float outT0, out float outT1)
{
outT0 = 0; outT1 = 0;
float tmin = -Mathf.Infinity;
float tmax = Mathf.Infinity;
float t0, t1, f;
Vector3 p = inAABB.GetCenter() - ray.GetOrigin();
Vector3 extent = inAABB.GetExtent();
int i;
for (i = 0; i < 3; i++)
{
// ray and plane are paralell so no valid intersection can be found
{
f = 1.0F / ray.GetDirection()[i];
t0 = (p[i] + extent[i]) * f;
t1 = (p[i] - extent[i]) * f;
// Ray leaves on Right, Top, Back Side
if (t0 < t1)
{
if (t0 > tmin)
{
tmin = t0;
}
if (t1 < tmax)
{
tmax = t1;
}
if (tmin > tmax)
{
return(false);
}
if (tmax < 0.0F)
{
return(false);
}
}
// Ray leaves on Left, Bottom, Front Side
else
{
if (t1 > tmin)
{
tmin = t1;
}
if (t0 < tmax)
{
tmax = t0;
}
if (tmin > tmax)
{
return(false);
}
if (tmax < 0.0F)
{
return(false);
}
}
}
}
outT0 = tmin;
outT1 = tmax;
return(true);
}
