GraphicsConverter.java - master - dm_kv/hw

GraphicsConverter.java
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dm_kv
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25 янв 2026, 19:09
25 янв 2026, 19:091af81fd
package ru.netology.graphics.image;

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

public class GraphicsConverter implements TextGraphicsConverter {

    int width = 10000;
    int height = 10000;
    double maxRatio = 100000;
    double ratio;
    TextColorSchema schema = new ColorSchema();

    public void setMaxWidth(int width) {
        this.width = width;
    }
    public void setMaxHeight(int height) {
        this.height = height;
    }
    public void setMaxRatio(double maxRatio) {
        this.maxRatio = maxRatio;
    }

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

    public String convert(String url) throws IOException, BadImageSizeException { // Вот так просто мы скачаем картинку из интернета :)
        BufferedImage img = ImageIO.read(new URL(url));

        if (img.getWidth() > img.getHeight()) {
            double ratio = img.getWidth() * 1.0/img.getHeight();
        } else {
            double ratio = img.getHeight() * 1.0/img.getWidth();
        }
        if (ratio > maxRatio) {
            throw new BadImageSizeException(ratio, maxRatio);
        }

        int newWidth = img.getWidth();
        int newHeight = img.getHeight();

        if (img.getWidth() > width || img.getHeight() > height) {
            double x = width * 1.0/img.getWidth();
            double y = height * 1.0/img.getHeight();
            if (x < y) {
                newWidth = (int)(x * img.getWidth() * 1.0);
                newHeight = (int)(x * img.getHeight() * 1.0);
            } else {
                newWidth = (int)(y * img.getWidth() * 1.0);
                newHeight = (int)(y * img.getHeight() * 1.0);
            }
        } else {
            newWidth = img.getWidth();
            newHeight = img.getHeight();
        }

        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);

        WritableRaster bwRaster = bwImg.getRaster();
        char[][] pictureResult = new char[newWidth][newHeight];
        for (int i = 0; i < newWidth; i++) {
            for (int j = 0; j < newHeight; j++) {
                int color = bwRaster.getPixel(i, j, new int[3])[0];
                pictureResult[i][j] = schema.convert(color);
            }
        }

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < pictureResult[0].length; i++) {
            for (int j = 0; j < pictureResult.length; j++) {
                sb.append(pictureResult[j][i]);
                sb.append(pictureResult[j][i]);
            }
            sb.append("\n");
        }
        String s = sb.toString();
        return s;
    }
}