spk_image.hpp

#pragma once
 
#include "structure/math/spk_vector2.hpp"
#include "structure/opengl/spk_texture_object.hpp"
#include <filesystem>
#include <vector>
 
namespace spk
{
    class Image : public OpenGL::TextureObject
    {
    public:
        using Format = OpenGL::TextureObject::Format;
        using Filtering = OpenGL::TextureObject::Filtering;
        using Filter = OpenGL::TextureObject::Filter;
        using Wrap = OpenGL::TextureObject::Wrap;
        using Wrapper = OpenGL::TextureObject::Wrapper;
        using Mipmap = OpenGL::TextureObject::Mipmap;

        struct Region
        {
            spk::Vector2 anchor;
            spk::Vector2 size;
        };

        static inline Region Whole = Region{.anchor = {0, 0}, .size = {1, 1}};
 
    private:
        Format _determineFormat(int p_channels) const;
 
    protected:
        void _loadFromFile(const std::filesystem::path &p_path);
        void _loadFromData(const std::vector<uint8_t> &p_pixelsAndEncodingData);
 
    public:
        Image(
            const std::vector<uint8_t> &p_pixelsAndEncodingData,
            Filter p_filter = Filter{Filtering::Linear, Filtering::Linear},
            Wrapper p_wrapper = Wrapper{Wrap::Repeat, Wrap::Repeat},
            Mipmap p_mipmap = Mipmap::Activated);
 
        Image() = default;
        Image(
            const std::filesystem::path &p_path,
            Filter p_filter = Filter{Filtering::Linear, Filtering::Linear},
            Wrapper p_wrapper = Wrapper{Wrap::Repeat, Wrap::Repeat},
            Mipmap p_mipmap = Mipmap::Activated);

        static Image fromFile(
            const std::filesystem::path &p_path,
            Filter p_filter = Filter{Filtering::Linear, Filtering::Linear},
            Wrapper p_wrapper = Wrapper{Wrap::Repeat, Wrap::Repeat},
            Mipmap p_mipmap = Mipmap::Activated);
        static Image fromRawData(
            const std::vector<uint8_t> &p_pixelsAndEncodingData,
            Filter p_filter = Filter{Filtering::Linear, Filtering::Linear},
            Wrapper p_wrapper = Wrapper{Wrap::Repeat, Wrap::Repeat},
            Mipmap p_mipmap = Mipmap::Activated);
    };
}