Image.h

//
//  Image.h
//  avara3d
//
//  Created by Morgan Davis on 10/21/16.
//  Copyright © 2026 Morgan K Davis. All rights reserved.
//
 
#ifndef AVARA3D_IMAGE_H
#define AVARA3D_IMAGE_H
 
#include <filesystem>
#include <memory>
 
namespace a3d {
 
    class Buffer;
 
    class Image {
 
    public:
        // [Public Lifecycle Functions]
 
        explicit Image(const std::filesystem::path& path,
                       bool                         flipVertical   = true,
                       bool                         flipHorizontal = false);
 
        explicit Image(const Buffer& buffer, bool flipVertical = true, bool flipHorizontal = false);
 
        Image(std::unique_ptr<Buffer> buffer,
              unsigned                width,
              unsigned                height,
              unsigned                bytesPerPixel,
              bool                    flipVertical   = true,
              bool                    flipHorizontal = false);
 
        Image(const Image& other);
        Image& operator=(const Image& other);
 
        Image(Image&& other) noexcept;
        Image& operator=(Image&& other) noexcept;
 
        ~Image();
 
        // [Public Member Functions]
 
        unsigned               width() const;
 
        unsigned               height() const;
 
        unsigned               bytesPerPixel() const;
 
        std::unique_ptr<Image> inverted() const;
 
        const Buffer&          buffer() const;
 
        bool                   writePNG(const std::filesystem::path& path) const;
 
    private:
        // [Private Member Functions]
 
        void                    loadBuffer(const Buffer& buffer, bool flipVertical, bool flipHorizontal);
        void                    flipVertical(); // "flip"
        void                    flipHorizontal(); // "mirror"
 
        // [Private Member Variables]
 
        unsigned                _width;
        unsigned                _height;
        unsigned                _bytesPerPixel;
        std::unique_ptr<Buffer> _buffer;
    };
 
}
 
#endif // AVARA3D_IMAGE_H