}
+float
+Luminance::value_in_foot_lamberts () const
+{
+ switch (_unit) {
+ case Unit::CANDELA_PER_SQUARE_METRE:
+ return _value / 3.426;
+ case Unit::FOOT_LAMBERT:
+ return _value;
+ default:
+ DCP_ASSERT (false);
+ }
+}
+
+
bool
dcp::operator== (Luminance const& a, Luminance const& b)
{