1 // 2 // Copyright 2016 Pixar 3 // 4 // Licensed under the Apache License, Version 2.0 (the "Apache License") 5 // with the following modification; you may not use this file except in 6 // compliance with the Apache License and the following modification to it: 7 // Section 6. Trademarks. is deleted and replaced with: 8 // 9 // 6. Trademarks. This License does not grant permission to use the trade 10 // names, trademarks, service marks, or product names of the Licensor 11 // and its affiliates, except as required to comply with Section 4(c) of 12 // the License and to reproduce the content of the NOTICE file. 13 // 14 // You may obtain a copy of the Apache License at 15 // 16 // http://www.apache.org/licenses/LICENSE-2.0 17 // 18 // Unless required by applicable law or agreed to in writing, software 19 // distributed under the Apache License with the above modification is 20 // distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 21 // KIND, either express or implied. See the Apache License for the specific 22 // language governing permissions and limitations under the Apache License. 23 // 24 #ifndef PXR_BASE_GF_TRAITS_H 25 #define PXR_BASE_GF_TRAITS_H 26 27 #include "pxr/pxr.h" 28 29 #include <type_traits> 30 31 PXR_NAMESPACE_OPEN_SCOPE 32 33 /// A metafunction with a static const bool member 'value' that is true for 34 /// GfVec types, like GfVec2i, GfVec4d, etc and false for all other types. 35 template <class T> 36 struct GfIsGfVec { static const bool value = false; }; 37 38 /// A metafunction with a static const bool member 'value' that is true for 39 /// GfMatrix types, like GfMatrix3d, GfMatrix4f, etc and false for all other 40 /// types. 41 template <class T> 42 struct GfIsGfMatrix { static const bool value = false; }; 43 44 /// A metafunction with a static const bool member 'value' that is true for 45 /// GfQuat types and false for all other types. 46 template <class T> 47 struct GfIsGfQuat { static const bool value = false; }; 48 49 /// A metafunction with a static const bool member 'value' that is true for 50 /// GfRange types and false for all other types. 51 template <class T> 52 struct GfIsGfRange { static const bool value = false; }; 53 54 /// A metafunction which is equivalent to std::is_floating_point but 55 /// allows for additional specialization for types like GfHalf 56 template <class T> 57 struct GfIsFloatingPoint : public std::is_floating_point<T>{}; 58 59 /// A metafunction which is equivalent to std::arithmetic but 60 /// also includes any specializations from GfIsFloatingPoint (like GfHalf) 61 template <class T> 62 struct GfIsArithmetic : public std::integral_constant< 63 bool, GfIsFloatingPoint<T>::value || std::is_arithmetic<T>::value>{}; 64 65 PXR_NAMESPACE_CLOSE_SCOPE 66 67 #endif // PXR_BASE_GF_TRAITS_H 68