| /* |
| * Copyright 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef UI_VEC4_H |
| #define UI_VEC4_H |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <ui/vec3.h> |
| |
| namespace android { |
| // ------------------------------------------------------------------------------------- |
| |
| template <typename T> |
| class tvec4 : public TVecProductOperators<tvec4, T>, |
| public TVecAddOperators<tvec4, T>, |
| public TVecUnaryOperators<tvec4, T>, |
| public TVecComparisonOperators<tvec4, T>, |
| public TVecFunctions<tvec4, T> |
| { |
| public: |
| enum no_init { NO_INIT }; |
| typedef T value_type; |
| typedef T& reference; |
| typedef T const& const_reference; |
| typedef size_t size_type; |
| |
| union { |
| struct { T x, y, z, w; }; |
| struct { T s, t, p, q; }; |
| struct { T r, g, b, a; }; |
| Impersonator< tvec2<T> > xy; |
| Impersonator< tvec2<T> > st; |
| Impersonator< tvec2<T> > rg; |
| Impersonator< tvec3<T> > xyz; |
| Impersonator< tvec3<T> > stp; |
| Impersonator< tvec3<T> > rgb; |
| }; |
| |
| enum { SIZE = 4 }; |
| inline static size_type size() { return SIZE; } |
| |
| // array access |
| inline T const& operator [] (size_t i) const { return (&x)[i]; } |
| inline T& operator [] (size_t i) { return (&x)[i]; } |
| |
| // ----------------------------------------------------------------------- |
| // we don't provide copy-ctor and operator= on purpose |
| // because we want the compiler generated versions |
| |
| // constructors |
| |
| // leaves object uninitialized. use with caution. |
| explicit tvec4(no_init) { } |
| |
| // default constructor |
| tvec4() : x(0), y(0), z(0), w(0) { } |
| |
| // handles implicit conversion to a tvec4. must not be explicit. |
| template<typename A> |
| tvec4(A v) : x(v), y(v), z(v), w(v) { } |
| |
| template<typename A, typename B, typename C, typename D> |
| tvec4(A x, B y, C z, D w) : x(x), y(y), z(z), w(w) { } |
| |
| template<typename A, typename B, typename C> |
| tvec4(const tvec2<A>& v, B z, C w) : x(v.x), y(v.y), z(z), w(w) { } |
| |
| template<typename A, typename B> |
| tvec4(const tvec3<A>& v, B w) : x(v.x), y(v.y), z(v.z), w(w) { } |
| |
| template<typename A> |
| explicit tvec4(const tvec4<A>& v) : x(v.x), y(v.y), z(v.z), w(v.w) { } |
| |
| template<typename A> |
| tvec4(const Impersonator< tvec4<A> >& v) |
| : x(((const tvec4<A>&)v).x), |
| y(((const tvec4<A>&)v).y), |
| z(((const tvec4<A>&)v).z), |
| w(((const tvec4<A>&)v).w) { } |
| |
| template<typename A, typename B> |
| tvec4(const Impersonator< tvec3<A> >& v, B w) |
| : x(((const tvec3<A>&)v).x), |
| y(((const tvec3<A>&)v).y), |
| z(((const tvec3<A>&)v).z), |
| w(w) { } |
| |
| template<typename A, typename B, typename C> |
| tvec4(const Impersonator< tvec2<A> >& v, B z, C w) |
| : x(((const tvec2<A>&)v).x), |
| y(((const tvec2<A>&)v).y), |
| z(z), |
| w(w) { } |
| }; |
| |
| // ---------------------------------------------------------------------------------------- |
| |
| typedef tvec4<float> vec4; |
| |
| // ---------------------------------------------------------------------------------------- |
| }; // namespace android |
| |
| #endif /* UI_VEC4_H */ |