mgl_color.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_COLOR_H_1606630679
#define INCGUARD_MGL_COLOR_H_1606630679
 
#include <cstdint>
 
#include "mgl_color_xterm.h"
 
namespace MGL
{
struct Color
{
    float red;      
    float green;    
    float blue;     
    float alpha;    
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Color() noexcept
        : red(0.0f)
        , green(0.0f)
        , blue(0.0f)
        , alpha(0.0f)
    {}
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Color(float inRed, float inGreen, float inBlue, float inAlpha = 1.0f) noexcept
        : red(inRed)
        , green(inGreen)
        , blue(inBlue)
        , alpha(inAlpha)
    {}
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Color(uint32_t rgba) noexcept
        : red(static_cast<float>(rgba >> 24u) / 255.0f)
        , green(static_cast<float>((rgba >> 16u) & 0xFFu) / 255.0f)
        , blue(static_cast<float>((rgba >> 8u) & 0xFFu) / 255.0f)
        , alpha(static_cast<float>(rgba & 0xFFu) / 255.0f)
    {}
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Color(XColor xcolor) noexcept
        : Color(GetXColorCode(xcolor))
    {}
};
 
constexpr Color kColorRed = Color(1.0f, 0.0f, 0.0f, 1.0f);      
constexpr Color kColorGreen = Color(0.0f, 1.0f, 0.0f, 1.0f);    
constexpr Color kColorBlue = Color(0.0f, 0.0f, 1.0f, 1.0f);     
constexpr Color kColorBlack = Color(0.0f, 0.0f, 0.0f, 1.0f);    
constexpr Color kColorWhite = Color(1.0f, 1.0f, 1.0f, 1.0f);    
 
}    // namespace MGL
 
#endif    // INCGUARD_MGL_COLOR_H_1606630679
 
// vim: et ts=4 sw=4 sts=4