computer-graphics-engine/color.h at master · marcoffee/computer-graphics-engine · GitHub

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#ifndef SRC_ENGINE_COLOR_H_
#define SRC_ENGINE_COLOR_H_

#include <string>
#include <GLFW/glfw3.h>
#include "spatial/defaults.h"

namespace Engine {

    class Color {

        float_max_t r, g, b, a;

    public:

        inline Color (float_max_t _r, float_max_t _g, float_max_t _b, float_max_t _a = 1.0) :
            r(_r), g(_g), b(_b), a(_a) {};

        inline static Color rgba (unsigned char _r, unsigned char _g, unsigned char _b, float_max_t _a) {
            return Color(_r / 255.0, _g / 255.0, _b / 255.0, _a);
        }

        inline static Color rgb (unsigned char _r, unsigned char _g, unsigned char _b) {
            return Color(_r / 255.0, _g / 255.0, _b / 255.0, 1.0);
        }

        inline static Color rgb (unsigned value) {
            return rgb((value >> 16) & 255, (value >> 8) & 255, value & 255);
        }

        inline static Color rgba (unsigned value) {
            return rgba((value >> 16) & 255, (value >> 8) & 255, value & 255, static_cast<float_max_t>((value >> 24) & 255) / 255.0);
        }

        inline static Color hex (std::string str) {
            if (str[0] == '#') {
                str = str.substr(1);
            }
            return rgb(stoul(str, nullptr, 16));
        }

        inline void setR (unsigned char _r) { this->r = _r; }
        inline void setG (unsigned char _g) { this->g = _g; }
        inline void setB (unsigned char _b) { this->b = _b; }
        inline void setA (float_max_t _a) { this->a = _a; }

        inline void apply (void) const { glColor4d(this->r, this->g, this->b, this->a); }

    };
};

#endif