Sphere OBB::MinimalEnclosingSphere() const
{
Sphere s;
s.pos = pos;
s.r = HalfDiagonal().Length();
return s;
}
void AABB::ProjectToAxis(const float3 &axis, float &dMin, float &dMax) const
{
float3 c = CenterPoint();
float3 e = HalfDiagonal();
// Compute the projection interval radius of the AABB onto L(t) = aabb.center + t * plane.normal;
float r = e[0]*Abs(axis[0]) + e[1]*Abs(axis[1]) + e[2]*Abs(axis[2]);
// Compute the distance of the box center from plane.
float s = Dot(axis, c);
dMin = s - r;
dMax = s + r;
if (dMin > dMax)
Swap(dMin, dMax);
}
float3 OBB::Diagonal() const
{
return 2.f * HalfDiagonal();
}
