Debug-Number-Texture Generator

Main.java

import java.awt.Color;
import java.awt.Font;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.nio.file.Paths;
import java.util.Random;

import javax.imageio.ImageIO;

public class Main {
	public static void main(String[] args) {
		new Main();
	}

	float scale = 0.20f;
	int spacingX = 30;
	int spacingY = 10;
	int numberCount = 1000;
	
	String path = "number-textures";

	Random rand = new Random();

	/**
	 * Adapted from: https://stackoverflow.com/questions/18800717/convert-text-content-to-image
	 */
	public Main() {

		Font font = new Font("Arial", Font.PLAIN, 48);
		int height = 512;
		int width = height;

		var img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
		var g2d = img.createGraphics();

		g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
		g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
		g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
		g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
		g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
		g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
		g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
		g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
		g2d.setFont(font);
		var fm = g2d.getFontMetrics();

		for (int i = 0; i < numberCount; i++) {
			
			int base = 128;
			var bg = new Color(base + rand.nextInt(128), base + rand.nextInt(128), base + rand.nextInt(128));
			g2d.setColor(bg);
			g2d.fillRect(0, 0, img.getWidth(), img.getHeight());
			
			String numberZeroed = String.format("%3d", i);
			String numberFormatted = String.format("%03d", i);
			String text = numberZeroed;

			int textWidth = fm.stringWidth(text);
			int textHeight = fm.getHeight();
			for (int y = 0; y < height; y += textHeight + spacingY) {
				for (int x = 0; x < width; x += textWidth + spacingX) {
					int underscoreOffsetY = 1 + fm.getAscent();
					
					g2d.setColor(Color.BLACK);
					g2d.drawString(text, x, y + fm.getAscent());
					g2d.drawLine(x, y + underscoreOffsetY, x + textWidth, y + underscoreOffsetY);
				}
			}

			try {
				var imagePath = Paths.get(path).resolve("tex_" + numberFormatted + ".png");
				ImageIO.write(img, "png", imagePath.toFile());
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}

		g2d.dispose();

	}
}