Pixel.h
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/**
* Copyright 1993-2015 NVIDIA Corporation. All rights reserved.
*
* Please refer to the NVIDIA end user license agreement (EULA) associated
* with this source code for terms and conditions that govern your use of
* this software. Any use, reproduction, disclosure, or distribution of
* this software and related documentation outside the terms of the EULA
* is strictly prohibited.
*
*/
#ifndef NV_UTIL_PIXEL_H
#define NV_UTIL_PIXEL_H
#include "Exceptions.h"
namespace npp
{
template <typename D, size_t N>
struct Pixel
{ };
template <typename D>
struct Pixel<D, 1>
{
D x;
const D &
operator[](size_t iChannel)
const
{
NPP_ASSERT(iChannel < 1);
return (&x)[iChannel];
}
D &
operator[](size_t iChannel)
{
NPP_ASSERT(iChannel < 1);
return (&x)[iChannel];
}
};
template <typename D>
struct Pixel<D, 2>
{
D x,y;
const D &
operator[](size_t iChannel)
const
{
NPP_ASSERT(iChannel < 2);
return (&x)[iChannel];
}
D &
operator[](size_t iChannel)
{
NPP_ASSERT(iChannel < 2);
return (&x)[iChannel];
}
};
template <typename D>
struct Pixel<D, 3>
{
D x,y,z;
const D &
operator[](size_t iChannel)
const
{
NPP_ASSERT(iChannel < 3);
return (&x)[iChannel];
}
D &
operator[](size_t iChannel)
{
NPP_ASSERT(iChannel < 3);
return (&x)[iChannel];
}
};
template <typename D>
struct Pixel<D, 4>
{
D x, y, z, w;
const D &
operator[](size_t iChannel)
const
{
NPP_ASSERT(iChannel < 4);
return (&x)[iChannel];
}
D &
operator[](size_t iChannel)
{
NPP_ASSERT(iChannel < 4);
return (&x)[iChannel];
}
};
} // npp namespace
#endif // NV_UTIL_PIXEL_H