Introduction

This project implements a C++ library for working with RGB images, enabling image representation, manipulation, and scripted processing.

Project Overview

The project consists of three main components:

• Color – Represents individual RGB colors, storing red, green, and blue channel values (0-255).
• Image – Represents an image as a 2D matrix of colors, with defined width and height.
• Script – Processes scripted commands for image transformations, enabling batch modifications.

Implementation Details

Color Representation

The Color class models RGB colors using three integer values (red, green, blue), each occupying one byte. The class includes functions for manipulating and retrieving color values.

Image Representation

The Image class stores image dimensions and a pixel matrix, allowing per-pixel access and modifications. Images are treated as a grid where (0,0) represents the top-left corner, and (width-1, height-1) is the bottom-right corner.

Script-Based Image Processing

The implementation is centered around the Script class that parses and executes image commands from a script file.

The Script::run() method then enters a loop where it reads commands (like open, invert, or rotate_left) and calls the corresponding member functions to perform operations on the current image. For example, methods like invert() iterate over the entire pixel matrix to compute the inverted color for each pixel:

void Script::invert()
{
    for (int i = 0; i < image->width(); i++)
    {
        for (int j = 0; j < image->height(); j++)
        {
            Color inv(255 - image->at(i, j).red(), 255 - image->at(i, j).green(), 255 - image->at(i, j).blue());
            image->at(i, j) = inv;
        }
    }
}

Key Features

• PNG File Support
• Object-Oriented Design
• Memory-Efficient Representation