NewTextGraphicsConverter.java - master - msigin77/Course1_1

NewTextGraphicsConverter.java
98 строк3 KB
msigin77
Курсовая1_1
25 янв 2026, 10:15
25 янв 2026, 10:159b00695
package ru.netology.graphics.image;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.IOException;
import java.net.URL;

public class NewTextGraphicsConverter implements TextGraphicsConverter {
    private int maxWidth;
    private int maxHeight;
    private double maxRatio;
    private TextColorSchema schema;

    @Override
    public String convert(String url) throws IOException, BadImageSizeException {
        BufferedImage img = ImageIO.read(new URL(url));

        int width = img.getWidth();
        int height = img.getHeight();

        double ratio = width / height;

        if (ratio > maxRatio) {
            throw new BadImageSizeException(ratio, maxRatio);
        }
        ;

        int newWidth;
        int newHeight;

        // Если ширина больше ограничения по ширине
        if (width > maxWidth) {
            newWidth = maxWidth;
            newHeight = (int) Math.round(newWidth / ratio);

            // Если новая высота превышает ограничение по высоте
            if (height > maxHeight) {
                newHeight = maxHeight;
                newWidth = (int) Math.round(newHeight * ratio);
            }
        } else {
            // Если высота больше ограничения по высоте
            newHeight = maxHeight;
            newWidth = (int) Math.round(newHeight * ratio);
        }

        Image scaledImage = img.getScaledInstance(newWidth, newHeight, BufferedImage.SCALE_SMOOTH);
        BufferedImage bwImg = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_BYTE_GRAY);
        Graphics2D graphics = bwImg.createGraphics();
        graphics.drawImage(scaledImage, 0, 0, null);
        //ImageIO.write(imageObject, "png", new File("out.png"));
        WritableRaster bwRaster = bwImg.getRaster();

        char[][] asciiArt = new char[newHeight][newWidth];

        for (int h = 0; h < newHeight; h++) {
            for (int w = 0; w < newWidth; w++) {
                int color = bwRaster.getPixel(w, h, new int[3])[0];
                char c = schema.convert(color);
                asciiArt[h][w] = c;
            }
        }

        StringBuilder sb = new StringBuilder();
        for (int h = 0; h < asciiArt.length; h++) {
            for (int w = 0; w < asciiArt[h].length; w++) {
                sb.append(asciiArt[h][w]);
                sb.append(" ");
            }
            if (h < asciiArt.length - 1) {
                sb.append("\n");
            }
        }
        return sb.toString();
    }

    @Override
    public void setMaxWidth(int width) {
        this.maxWidth = width;
    }

    @Override
    public void setMaxHeight(int height) {
        this.maxHeight = height;
    }

    @Override
    public void setMaxRatio(double maxRatio) {
        this.maxRatio = maxRatio;
    }

    @Override
    public void setTextColorSchema(TextColorSchema schema) {
        this.schema = schema;
    }
}