//--------------------------------------------------------------------------------------------------
public static AABB Combine(AABB a, AABB b)
{
AABB c;
c.min = Vec3.Min(a.min, b.min);
c.max = Vec3.Max(a.max, b.max);
return(c);
}
public void ComputeAABB(Transform tx, out AABB aabb)
{
Transform world = Transform.Mul(tx, local);
Vec3 min = new Vec3(double.MaxValue, double.MaxValue, double.MaxValue);
Vec3 max = new Vec3(-double.MaxValue, -double.MaxValue, -double.MaxValue);
for (int i = 0; i < 8; ++i)
{
var v = Transform.Mul(world, Vec3.Mul(kBoxVertices[i], e));
min = Vec3.Min(min, v);
max = Vec3.Max(max, v);
}
aabb.min = min;
aabb.max = max;
}