1d4d8f94e2
this will make it easier to create matrices of different sizes Change-Id: I2c1771ba0823c42d737762e2dfc2cd47eb302767
114 lines
3.4 KiB
C++
114 lines
3.4 KiB
C++
/*
|
|
* 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_VEC3_H
|
|
#define UI_VEC3_H
|
|
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <ui/vec2.h>
|
|
|
|
namespace android {
|
|
// -------------------------------------------------------------------------------------
|
|
|
|
template <typename T>
|
|
class tvec3 : public TVecProductOperators<tvec3, T>,
|
|
public TVecAddOperators<tvec3, T>,
|
|
public TVecUnaryOperators<tvec3, T>,
|
|
public TVecComparisonOperators<tvec3, T>,
|
|
public TVecFunctions<tvec3, 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; };
|
|
struct { T s, t, p; };
|
|
struct { T r, g, b; };
|
|
Impersonator< tvec2<T> > xy;
|
|
Impersonator< tvec2<T> > st;
|
|
Impersonator< tvec2<T> > rg;
|
|
};
|
|
|
|
enum { SIZE = 3 };
|
|
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 tvec3(no_init) { }
|
|
|
|
// default constructor
|
|
tvec3() : x(0), y(0), z(0) { }
|
|
|
|
// handles implicit conversion to a tvec4. must not be explicit.
|
|
template<typename A>
|
|
tvec3(A v) : x(v), y(v), z(v) { }
|
|
|
|
template<typename A, typename B, typename C>
|
|
tvec3(A x, B y, C z) : x(x), y(y), z(z) { }
|
|
|
|
template<typename A, typename B>
|
|
tvec3(const tvec2<A>& v, B z) : x(v.x), y(v.y), z(z) { }
|
|
|
|
template<typename A>
|
|
explicit tvec3(const tvec3<A>& v) : x(v.x), y(v.y), z(v.z) { }
|
|
|
|
template<typename A>
|
|
tvec3(const Impersonator< tvec3<A> >& v)
|
|
: x(((const tvec3<A>&)v).x),
|
|
y(((const tvec3<A>&)v).y),
|
|
z(((const tvec3<A>&)v).z) { }
|
|
|
|
template<typename A, typename B>
|
|
tvec3(const Impersonator< tvec2<A> >& v, B z)
|
|
: x(((const tvec2<A>&)v).x),
|
|
y(((const tvec2<A>&)v).y),
|
|
z(z) { }
|
|
|
|
// cross product works only on vectors of size 3
|
|
template <typename RT>
|
|
friend inline
|
|
tvec3 __attribute__((pure)) cross(const tvec3& u, const tvec3<RT>& v) {
|
|
return tvec3(
|
|
u.y*v.z - u.z*v.y,
|
|
u.z*v.x - u.x*v.z,
|
|
u.x*v.y - u.y*v.x);
|
|
}
|
|
};
|
|
|
|
|
|
// ----------------------------------------------------------------------------------------
|
|
|
|
typedef tvec3<float> vec3;
|
|
|
|
// ----------------------------------------------------------------------------------------
|
|
}; // namespace android
|
|
|
|
#endif /* UI_VEC4_H */
|