Mathias Agopian | 595ea77 | 2013-08-21 23:10:41 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef UI_VEC4_H |
| 18 | #define UI_VEC4_H |
| 19 | |
| 20 | #include <stdint.h> |
| 21 | #include <sys/types.h> |
| 22 | |
| 23 | #include <ui/vec3.h> |
| 24 | |
| 25 | namespace android { |
| 26 | // ------------------------------------------------------------------------------------- |
| 27 | |
| 28 | template <typename T> |
Mathias Agopian | 1d4d8f9 | 2013-09-01 21:35:36 -0700 | [diff] [blame] | 29 | class tvec4 : public TVecProductOperators<tvec4, T>, |
| 30 | public TVecAddOperators<tvec4, T>, |
Mathias Agopian | 595ea77 | 2013-08-21 23:10:41 -0700 | [diff] [blame] | 31 | public TVecUnaryOperators<tvec4, T>, |
| 32 | public TVecComparisonOperators<tvec4, T>, |
| 33 | public TVecFunctions<tvec4, T> |
| 34 | { |
| 35 | public: |
| 36 | enum no_init { NO_INIT }; |
| 37 | typedef T value_type; |
| 38 | typedef T& reference; |
| 39 | typedef T const& const_reference; |
| 40 | typedef size_t size_type; |
| 41 | |
| 42 | union { |
| 43 | struct { T x, y, z, w; }; |
| 44 | struct { T s, t, p, q; }; |
| 45 | struct { T r, g, b, a; }; |
| 46 | Impersonator< tvec2<T> > xy; |
| 47 | Impersonator< tvec2<T> > st; |
| 48 | Impersonator< tvec2<T> > rg; |
| 49 | Impersonator< tvec3<T> > xyz; |
| 50 | Impersonator< tvec3<T> > stp; |
| 51 | Impersonator< tvec3<T> > rgb; |
| 52 | }; |
| 53 | |
| 54 | enum { SIZE = 4 }; |
| 55 | inline static size_type size() { return SIZE; } |
| 56 | |
| 57 | // array access |
| 58 | inline T const& operator [] (size_t i) const { return (&x)[i]; } |
| 59 | inline T& operator [] (size_t i) { return (&x)[i]; } |
| 60 | |
| 61 | // ----------------------------------------------------------------------- |
| 62 | // we don't provide copy-ctor and operator= on purpose |
| 63 | // because we want the compiler generated versions |
| 64 | |
| 65 | // constructors |
| 66 | |
| 67 | // leaves object uninitialized. use with caution. |
| 68 | explicit tvec4(no_init) { } |
| 69 | |
| 70 | // default constructor |
| 71 | tvec4() : x(0), y(0), z(0), w(0) { } |
| 72 | |
| 73 | // handles implicit conversion to a tvec4. must not be explicit. |
| 74 | template<typename A> |
| 75 | tvec4(A v) : x(v), y(v), z(v), w(v) { } |
| 76 | |
| 77 | template<typename A, typename B, typename C, typename D> |
| 78 | tvec4(A x, B y, C z, D w) : x(x), y(y), z(z), w(w) { } |
| 79 | |
| 80 | template<typename A, typename B, typename C> |
| 81 | tvec4(const tvec2<A>& v, B z, C w) : x(v.x), y(v.y), z(z), w(w) { } |
| 82 | |
| 83 | template<typename A, typename B> |
| 84 | tvec4(const tvec3<A>& v, B w) : x(v.x), y(v.y), z(v.z), w(w) { } |
| 85 | |
| 86 | template<typename A> |
| 87 | explicit tvec4(const tvec4<A>& v) : x(v.x), y(v.y), z(v.z), w(v.w) { } |
| 88 | |
Mathias Agopian | 1d4d8f9 | 2013-09-01 21:35:36 -0700 | [diff] [blame] | 89 | template<typename A> |
| 90 | tvec4(const Impersonator< tvec4<A> >& v) |
| 91 | : x(((const tvec4<A>&)v).x), |
| 92 | y(((const tvec4<A>&)v).y), |
| 93 | z(((const tvec4<A>&)v).z), |
| 94 | w(((const tvec4<A>&)v).w) { } |
| 95 | |
Mathias Agopian | 595ea77 | 2013-08-21 23:10:41 -0700 | [diff] [blame] | 96 | template<typename A, typename B> |
| 97 | tvec4(const Impersonator< tvec3<A> >& v, B w) |
| 98 | : x(((const tvec3<A>&)v).x), |
| 99 | y(((const tvec3<A>&)v).y), |
| 100 | z(((const tvec3<A>&)v).z), |
| 101 | w(w) { } |
| 102 | |
| 103 | template<typename A, typename B, typename C> |
| 104 | tvec4(const Impersonator< tvec2<A> >& v, B z, C w) |
| 105 | : x(((const tvec2<A>&)v).x), |
| 106 | y(((const tvec2<A>&)v).y), |
| 107 | z(z), |
| 108 | w(w) { } |
| 109 | }; |
| 110 | |
| 111 | // ---------------------------------------------------------------------------------------- |
| 112 | |
| 113 | typedef tvec4<float> vec4; |
| 114 | |
| 115 | // ---------------------------------------------------------------------------------------- |
| 116 | }; // namespace android |
| 117 | |
| 118 | #endif /* UI_VEC4_H */ |