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;
};
 
} // namespace a3d
 
#endif // AVARA3D_IMAGE_H