378022c797
In order to allow interpolation of integers with a float, add a separate template parameter for the factor and multiplication types. Also move some helper constexpr variables to the "base" header (reversing the dependency to "base" -> "vector"). This also adds a distance function for scalar types, which is helpful to allow sharing code between vectors and basic types. Differential Revision: https://developer.blender.org/D14446
117 lines
2.4 KiB
C++
117 lines
2.4 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2022 Blender Foundation. */
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#pragma once
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/** \file
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* \ingroup bli
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*/
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#include <algorithm>
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#include <cmath>
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#include <type_traits>
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#include "BLI_math_base_safe.h"
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#include "BLI_utildefines.h"
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#ifdef WITH_GMP
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# include "BLI_math_mpq.hh"
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#endif
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namespace blender::math {
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template<typename T>
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inline constexpr bool is_math_float_type = (std::is_floating_point_v<T>
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#ifdef WITH_GMP
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|| std::is_same_v<T, mpq_class>
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#endif
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);
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template<typename T> inline constexpr bool is_math_integral_type = std::is_integral_v<T>;
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template<typename T> inline bool is_zero(const T &a)
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{
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return a == T(0);
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}
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template<typename T> inline bool is_any_zero(const T &a)
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{
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return is_zero(a);
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}
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template<typename T> inline T abs(const T &a)
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{
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return std::abs(a);
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}
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template<typename T> inline T min(const T &a, const T &b)
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{
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return std::min(a, b);
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}
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template<typename T> inline T max(const T &a, const T &b)
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{
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return std::max(a, b);
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}
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template<typename T> inline T clamp(const T &a, const T &min, const T &max)
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{
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return std::clamp(a, min, max);
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}
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template<typename T, BLI_ENABLE_IF((is_math_float_type<T>))> inline T mod(const T &a, const T &b)
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{
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return std::fmod(a, b);
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}
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template<typename T, BLI_ENABLE_IF((is_math_float_type<T>))>
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inline T safe_mod(const T &a, const T &b)
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{
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return (b != 0) ? std::fmod(a, b) : 0;
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}
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template<typename T> inline void min_max(const T &value, T &min, T &max)
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{
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min = math::min(value, min);
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max = math::max(value, max);
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}
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template<typename T, BLI_ENABLE_IF((is_math_float_type<T>))>
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inline T safe_divide(const T &a, const T &b)
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{
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return (b != 0) ? a / b : T(0.0f);
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}
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template<typename T, BLI_ENABLE_IF((is_math_float_type<T>))> inline T floor(const T &a)
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{
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return std::floor(a);
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}
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template<typename T, BLI_ENABLE_IF((is_math_float_type<T>))> inline T ceil(const T &a)
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{
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return std::ceil(a);
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}
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template<typename T> inline T distance(const T &a, const T &b)
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{
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return std::abs(a - b);
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}
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template<typename T, BLI_ENABLE_IF((is_math_float_type<T>))> inline T fract(const T &a)
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{
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return a - std::floor(a);
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}
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template<typename T, typename FactorT, BLI_ENABLE_IF((is_math_float_type<FactorT>))>
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inline T interpolate(const T &a, const T &b, const FactorT &t)
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{
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return a * (1 - t) + b * t;
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}
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template<typename T> inline T midpoint(const T &a, const T &b)
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{
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return (a + b) * T(0.5);
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}
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} // namespace blender::math
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