I need to find volume through area times the height in mm^3. The problem in area, it must be in mm^2 but boost doesn't have such built-in option, so I need to make this unit (with make_scaled_unit I suppose). I tried to do it like it was shown in this answer and in the boost documentation but I get error in quantity.hpp of boost library:
C2338 (is_implicitly_convertible<Unit2,unit_type>::value == true).
and a message see reference to function template instantiation with huge type names that I completely don't understand. How do I fix this properly?
Here is the code with my attempts to make it work
#include <iostream>
#include <boost/units/systems/si/volume.hpp>
#include <boost/units/systems/si/mass.hpp>
#include "string"
#include <boost/units/systems/si/io.hpp>
#include <boost/units/systems/si/prefixes.hpp>
#include <boost/units/systems/angle/degrees.hpp>
#include <cmath>
using namespace boost::units;
using namespace boost::units::si;
using Volume = boost::units::quantity<boost::units::si::volume>;
using Square = boost::units::quantity<boost::units::area_dimension>;
// like in stackoverflow answer
namespace extended_area_names {
namespace squared_millimeters_system
{
// "area" is not a base unit
typedef make_scaled_unit<area, scale<10, static_rational<-6>>>::type millimeter_unit;
typedef make_system<millimeter_unit>::type system;
typedef unit<area_dimension, system> area;
BOOST_UNITS_STATIC_CONSTANT(squared_millimeter, area);
BOOST_UNITS_STATIC_CONSTANT(squared_millimeters, area);
} // namespace squared_millimeters_system
typedef quantity<squared_millimeters_system::area> quantity_area_square_millimeter;
using squared_millimeters_system::squared_millimeter;
using squared_millimeters_system::squared_millimeters;
} // namespace extended_area_names
// like in boost documentation, I use only one of these per try
typedef make_scaled_unit<area, scale<10, static_rational<-6>>>::type millimeter_unit;
Volume ContentVolume(std::string tankType, double contentLevel_raw, double tankHeight_raw, double tankDiameter_raw)
{
quantity<length> contentLevel(contentLevel_raw * milli * meters);
quantity<length> tankHeight(tankHeight_raw * milli * meters);
quantity<length> tankDiameter(tankDiameter_raw * milli * meters);
quantity<length> tankRadius = tankDiameter / 2.0;
Volume tankVolume(3.1415 * (tankRadius * tankRadius) * tankHeight);
Volume contentVolume;
using namespace extended_area_names;
quantity
<unit<plane_angle_dimension, degree::system>
> sectorAngle(2 * acos((tankRadius - tankHeight) / tankRadius)
* degree::degree);
quantity<millimeter_unit> sectorSquare(
(sectorAngle.value() * (tankRadius.value() * tankRadius.value()) / 2.0)
* square_meter);
quantity<length> triangleBase(
sqrt(
(tankRadius.value() * tankRadius.value()) -
((tankRadius.value() - tankHeight.value()) *
(tankRadius.value() - tankHeight.value())))
* milli * meters);
quantity<length> p(
(tankRadius + tankRadius + triangleBase) / 2.0);
quantity<millimeter_unit> triangleSquare(
sqrt(
p.value() *
(p.value() - tankRadius.value()) *
(p.value() - tankRadius.value()) *
(p.value() - triangleBase.value()))
* square_meter);
// the message says the problem is here
contentVolume = (sectorSquare - triangleSquare) * tankHeight;
return contentVolume; //m^3
}
}
}
