LABColor.h

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/*--------------------------------------------------------------------------------------------
Copyright (c) 2019, NDEVR LLC
tyler.parke@ndevr.org
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Subject to the terms of the Enterprise+ Agreement, NDEVR hereby grants 
Licensee a limited, non-exclusive, non-transferable, royalty-free license 
(without the right to sublicense) to use the API solely for the purpose of 
Licensee's internal development efforts to develop applications for which 
the API was provided.
 
The above copyright notice and this permission notice shall be included in all 
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
 
Library: Base
File: LABColor
Included in API: True
Author(s): Tyler Parke
 *-----------------------------------------------------------------------------------------**/
#pragma once
#include <NDEVR/Color.h>
#include <NDEVR/Vector.h>
#include <NDEVR/Buffer.h>
namespace NDEVR
{
    class XYZColor;
    class ACIColor;
    class HSBColor;
    class RGBColor;
    class String;
    class TranslatedString;
    /**----------------------------------------------------------------------------
    \brief A Lab color space is a color-opponent space with dimension L for luminance 
        and a and b for the color-opponent dimensions, based on nonlinearly-compressed CIE XYZ color space coordinates.
    
    IE L*a*b* color space, also know as CIE 1976 color space, stands for:
    L*, the luminance
    a*, the red/green color-opponent dimension
    b*, the yellow/blue color-opponent dimension
    The L*a*b* color model has been created to serve as a device independent 
    model to be used as a reference. It is based directly on the CIE 1931 XYZ 
    color space as an attempt to linearize the perceptibility of color differences.
    The non-linear relations for L*, a*, and b* are intended to mimic the 
    logarithmic response of the eye, coloring information is referred to the color 
    of the white point of the system.
    Useful for color comparisions, distances, etc
    ----------------------------------------------------------------------------*/
    class LABColor : public Vector<4, fltp04>, public Color
    {
    public:
        constexpr LABColor()
        {}
        constexpr LABColor(fltp04 x, fltp04 y, fltp04 z, fltp04 a = 1.0f)
            : Vector<4, fltp04>(x, y, z, a)
        {}
        constexpr LABColor(const Vector<4, fltp04>& lab)
            : Vector<4, fltp04>(lab)
        {}
        NDEVR_BASE_API explicit LABColor(const XYZColor& lab);
        NDEVR_BASE_API explicit LABColor(const ACIColor& lab);
        NDEVR_BASE_API explicit LABColor(const HSBColor& lab);
        NDEVR_BASE_API explicit LABColor(const RGBColor& lab);
#if NDEVR_INCLUDE_RAL_COLORS
        NDEVR_BASE_API static const Buffer<std::pair<LABColor, TranslatedString>, uint04, ObjectAllocator<false>>& RALClassicColors();
        NDEVR_BASE_API const TranslatedString& getName() const;
#endif
    };
    static_assert(sizeof(LABColor) == 16, "Bad color size");
    template<> constexpr LABColor Constant<LABColor>::Invalid = LABColor(Constant<fltp04>::Invalid, Constant<fltp04>::Invalid, Constant<fltp04>::Invalid);
    template<> constexpr LABColor Constant<LABColor>::Max = LABColor(Constant<fltp04>::Max, Constant<fltp04>::Max, Constant<fltp04>::Max);
    template<> constexpr LABColor Constant<LABColor>::Min = LABColor(Constant<fltp04>::Min, Constant<fltp04>::Min, Constant<fltp04>::Min);
}