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109 lines
4.0 KiB
109 lines
4.0 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com>
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// Copyright (C) 2021 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_COPYLEFT_CGAL_ASSIGN_SCALAR_H
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#define IGL_COPYLEFT_CGAL_ASSIGN_SCALAR_H
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#include "../../igl_inline.h"
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#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
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#include <CGAL/Exact_predicates_exact_constructions_kernel_with_sqrt.h>
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#ifndef WIN32
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#include <CGAL/gmpxx.h>
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#endif
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namespace igl
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{
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namespace copyleft
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{
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namespace cgal
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{
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/// Conduct the casting copy:
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/// lhs = rhs
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/// using `slow_and_more_precise` rounding if more desired.
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///
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/// @tparam RHS right-hand side scalar type
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/// @tparam LHS left-hand side scalar type
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/// @param[in] rhs right-hand side scalar
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/// @param[in] slow_and_more_precise when appropriate use more elaborate rounding
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/// guaranteed to find a closest lhs value in an absolute value sense.
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/// Think of `slow_and_more_precise=true` as "round to closest number"
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/// and `slow_and_more_precise=false` as "round down/up". CGAL's number
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/// types are bit mysterious about how exactly rounding is conducted.
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/// For example, the rationals created during remesh_intersections on
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/// floating point input appear to be tightly rounded up or down so the
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/// difference with the `slow_and_more_precise=true` will be exactly
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/// zero 50% of the time and "one floating point unit" (at whatever
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/// scale) the other 50% of the time.
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/// @param[out] lhs left-hand side scalar
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template <typename RHS, typename LHS>
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IGL_INLINE void assign_scalar(
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const RHS & rhs,
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const bool & slow_and_more_precise,
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LHS & lhs);
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/// \overload
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/// \brief For legacy reasons, all of these overload uses
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/// `slow_and_more_precise=true`. This is subject to change if we determine
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/// it is sufficiently overkill. In that case, we'd create a new
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/// non-overloaded function.
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IGL_INLINE void assign_scalar(
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const CGAL::Epeck::FT & cgal,
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CGAL::Epeck::FT & d);
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/// \overload
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IGL_INLINE void assign_scalar(
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const CGAL::Epeck::FT & cgal,
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double & d);
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/// \overload
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IGL_INLINE void assign_scalar(
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/// \overload
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const CGAL::Epeck::FT & cgal,
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float& d);
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IGL_INLINE void assign_scalar(
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/// \overload
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const double & c,
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double & d);
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/// \overload
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IGL_INLINE void assign_scalar(
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const float& c,
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float & d);
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/// \overload
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IGL_INLINE void assign_scalar(
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const float& c,
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double& d);
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/// \overload
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IGL_INLINE void assign_scalar(
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const CGAL::Exact_predicates_exact_constructions_kernel_with_sqrt::FT & cgal,
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CGAL::Exact_predicates_exact_constructions_kernel_with_sqrt::FT & d);
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/// \overload
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IGL_INLINE void assign_scalar(
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const CGAL::Exact_predicates_exact_constructions_kernel_with_sqrt::FT & cgal,
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double & d);
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/// \overload
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IGL_INLINE void assign_scalar(
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const CGAL::Exact_predicates_exact_constructions_kernel_with_sqrt::FT & cgal,
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float& d);
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#ifndef WIN32
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/// \overload
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IGL_INLINE void assign_scalar(
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const CGAL::Simple_cartesian<mpq_class>::FT & cgal,
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CGAL::Simple_cartesian<mpq_class>::FT & d);
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/// \overload
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IGL_INLINE void assign_scalar(
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const CGAL::Simple_cartesian<mpq_class>::FT & cgal,
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double & d);
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/// \overload
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IGL_INLINE void assign_scalar(
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const CGAL::Simple_cartesian<mpq_class>::FT & cgal,
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float& d);
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#endif
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}
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}
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "assign_scalar.cpp"
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#endif
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#endif
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