136 lines
3.1 KiB
C++
136 lines
3.1 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2017 Artem Pavlenko
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifndef MAPNIK_FUNCTION_CALL_HPP
|
|
#define MAPNIK_FUNCTION_CALL_HPP
|
|
|
|
#include <mapnik/value.hpp>
|
|
#include <functional>
|
|
#include <algorithm>
|
|
#include <cmath>
|
|
|
|
namespace mapnik {
|
|
|
|
using value_type = mapnik::value;
|
|
|
|
using unary_function_impl = std::function<value_type(value_type const&)>;
|
|
using binary_function_impl = std::function<value_type(value_type const&, value_type const&)>;
|
|
|
|
char const* unary_function_name(unary_function_impl const& fun);
|
|
char const* binary_function_name(binary_function_impl const& fun);
|
|
|
|
// functions
|
|
// exp
|
|
struct exp_impl
|
|
{
|
|
//using type = T;
|
|
value_type operator() (value_type const& val) const
|
|
{
|
|
return std::exp(val.to_double());
|
|
}
|
|
};
|
|
|
|
// log
|
|
struct log_impl
|
|
{
|
|
//using type = T;
|
|
value_type operator() (value_type const& val) const
|
|
{
|
|
return std::log(val.to_double());
|
|
}
|
|
};
|
|
|
|
// sin
|
|
struct sin_impl
|
|
{
|
|
value_type operator() (value_type const& val) const
|
|
{
|
|
return std::sin(val.to_double());
|
|
}
|
|
};
|
|
|
|
// cos
|
|
struct cos_impl
|
|
{
|
|
value_type operator() (value_type const& val) const
|
|
{
|
|
return std::cos(val.to_double());
|
|
}
|
|
};
|
|
|
|
// tan
|
|
struct tan_impl
|
|
{
|
|
value_type operator() (value_type const& val) const
|
|
{
|
|
return std::tan(val.to_double());
|
|
}
|
|
};
|
|
|
|
// atan
|
|
struct atan_impl
|
|
{
|
|
value_type operator()(value_type const& val) const
|
|
{
|
|
return std::atan(val.to_double());
|
|
}
|
|
};
|
|
|
|
// abs
|
|
struct abs_impl
|
|
{
|
|
value_type operator() (value_type const& val) const
|
|
{
|
|
return std::abs(val.to_double());
|
|
}
|
|
};
|
|
|
|
// length
|
|
struct length_impl
|
|
{
|
|
value_type operator() (value_type const& val) const
|
|
{
|
|
return val.to_unicode().length();
|
|
}
|
|
};
|
|
|
|
// min
|
|
inline value_type min_impl(value_type const& arg1, value_type const& arg2)
|
|
{
|
|
return std::min(arg1.to_double(), arg2.to_double());
|
|
}
|
|
|
|
// max
|
|
inline value_type max_impl(value_type const& arg1, value_type const& arg2)
|
|
{
|
|
return std::max(arg1.to_double(), arg2.to_double());
|
|
}
|
|
|
|
// pow
|
|
inline value_type pow_impl(value_type const& arg1, value_type const& arg2)
|
|
{
|
|
return std::pow(arg1.to_double(), arg2.to_double());
|
|
}
|
|
|
|
} // namespace mapnik
|
|
|
|
#endif // MAPNIK_FUNCTION_CALL_HPP
|