Vec2C.h (2317B)
1 /** @file 2 @brief Header 3 4 Must be c-safe! 5 6 @date 2014 7 8 @author 9 Sensics, Inc. 10 <http://sensics.com/osvr> 11 */ 12 13 /* 14 // Copyright 2014 Sensics, Inc. 15 // 16 // Licensed under the Apache License, Version 2.0 (the "License"); 17 // you may not use this file except in compliance with the License. 18 // You may obtain a copy of the License at 19 // 20 // http://www.apache.org/licenses/LICENSE-2.0 21 // 22 // Unless required by applicable law or agreed to in writing, software 23 // distributed under the License is distributed on an "AS IS" BASIS, 24 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 25 // See the License for the specific language governing permissions and 26 // limitations under the License. 27 */ 28 29 #ifndef INCLUDED_Vec2C_h_GUID_F9715DE4_2649_4182_0F4C_D62121235D5F 30 #define INCLUDED_Vec2C_h_GUID_F9715DE4_2649_4182_0F4C_D62121235D5F 31 32 /* Internal Includes */ 33 #include <osvr/Util/APIBaseC.h> 34 35 /* Library/third-party includes */ 36 /* none */ 37 38 /* Standard includes */ 39 /* none */ 40 41 OSVR_EXTERN_C_BEGIN 42 43 /** @addtogroup UtilMath 44 @{ 45 */ 46 /** @brief A structure defining a 2D vector, which represents position 47 */ 48 typedef struct OSVR_Vec2 { 49 /** @brief Internal array data. */ 50 double data[2]; 51 } OSVR_Vec2; 52 53 #define OSVR_VEC_MEMBER(COMPONENT, INDEX) \ 54 /** @brief Accessor for Vec2 component COMPONENT */ \ 55 OSVR_INLINE double osvrVec2Get##COMPONENT(OSVR_Vec2 const* v) { \ 56 return v->data[INDEX]; \ 57 } \ 58 /** @brief Setter for Vec2 component COMPONENT */ \ 59 OSVR_INLINE void osvrVec2Set##COMPONENT(OSVR_Vec2* v, double val) { \ 60 v->data[INDEX] = val; \ 61 } 62 63 OSVR_VEC_MEMBER(X, 0) 64 OSVR_VEC_MEMBER(Y, 1) 65 66 #undef OSVR_VEC_MEMBER 67 68 /** @brief Set a Vec2 to the zero vector */ 69 OSVR_INLINE void osvrVec2Zero(OSVR_Vec2* v) { 70 osvrVec2SetX(v, 0); 71 osvrVec2SetY(v, 0); 72 } 73 74 /** @} */ 75 76 OSVR_EXTERN_C_END 77 78 #ifdef __cplusplus 79 template <typename StreamType> 80 inline StreamType& operator<<(StreamType& os, OSVR_Vec2 const& vec) { 81 os << "(" << vec.data[0] << ", " << vec.data[1] << ")"; 82 return os; 83 } 84 #endif 85 86 #endif // INCLUDED_Vec2C_h_GUID_F9715DE4_2649_4182_0F4C_D62121235D5F