| /* |
| * 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_VEC2_H |
| #define UI_VEC2_H |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #define TVEC_IMPLEMENTATION |
| #include <ui/TVecHelpers.h> |
| |
| namespace android { |
| // ------------------------------------------------------------------------------------- |
| |
| template <typename T> |
| class tvec2 : public TVecProductOperators<tvec2, T>, |
| public TVecAddOperators<tvec2, T>, |
| public TVecUnaryOperators<tvec2, T>, |
| public TVecComparisonOperators<tvec2, T>, |
| public TVecFunctions<tvec2, 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; }; |
| struct { T s, t; }; |
| struct { T r, g; }; |
| }; |
| |
| enum { SIZE = 2 }; |
| 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 tvec2(no_init) { } |
| |
| // default constructor |
| tvec2() : x(0), y(0) { } |
| |
| // handles implicit conversion to a tvec4. must not be explicit. |
| template<typename A> |
| tvec2(A v) : x(v), y(v) { } |
| |
| template<typename A, typename B> |
| tvec2(A x, B y) : x(x), y(y) { } |
| |
| template<typename A> |
| explicit tvec2(const tvec2<A>& v) : x(v.x), y(v.y) { } |
| |
| template<typename A> |
| tvec2(const Impersonator< tvec2<A> >& v) |
| : x(((const tvec2<A>&)v).x), |
| y(((const tvec2<A>&)v).y) { } |
| }; |
| |
| // ---------------------------------------------------------------------------------------- |
| |
| typedef tvec2<float> vec2; |
| |
| // ---------------------------------------------------------------------------------------- |
| }; // namespace android |
| |
| #endif /* UI_VEC4_H */ |