ASCII Art Generator Rust

fillout_ascii.rs

use image::{DynamicImage, GrayImage};
use std::path::Path;

struct ASCIIArtGeneratorRust {
    ascii_chars: Vec<char>,
}

impl ASCIIArtGeneratorRust {
    /// Constructs a new ASCIIArtGenerator with a given set of ASCII characters.
    fn new(ascii_chars: &str) -> Self {
        // Initialize the ascii_chars vector from the provided string.
    }

    /// Scales the image to a specified width while maintaining aspect ratio.
    /// Returns the scaled and converted grayscale image.
    fn scale_image(&self, image: &DynamicImage, new_width: u32) -> GrayImage {
        // Calculate the new height based on the aspect ratio.
        // Resize the image to these new dimensions.
        // The last part is tricky and requires library knowledge.
        image.resize_exact(new_width, new_height, image::imageops::FilterType::Nearest).to_luma8()
    }

    /// Converts the grayscale image pixels to ASCII characters.
    /// Returns a string where each pixel's brightness is represented by a specific ASCII character.
    fn map_pixels_to_ascii(&self, image: &GrayImage) -> String {
        // Get the image height
        // Get the image width
        // Create a new string, that will be used to concatenate all
        // the pixel to character transformations.
        // Get the length of the ascii characters offered,
        // So that they can be used to map to intensity.
        
        
        for y in 0..height {
            for x in 0..width {
                let pixel = image.get_pixel(x, y);
                let intensity = pixel.0[0];
                let index = (intensity as u32 * ascii_len / 256) as usize;
                ascii_art.push(self.ascii_chars[index]);
            }
            ascii_art.push('\n');  // Add newline after each row
        }
    
        ascii_art
    }

    /// Generates ASCII art from the specified image path.
    /// Returns the ASCII art as a string.
    fn generate_ascii_art(&self, image_path: &Path, width: u32) -> String {
        // Open the image file from the specified path.
        // Scale the image to the desired width and convert it to grayscale.
        // Map the grayscale pixels to ASCII characters.
        // Return the generated ASCII art string.
    }
}