どうでもいいテスト用の画像ファイルを生成するGroovy

gistfile1.groovy

import java.awt.*
import java.awt.image.*
import javax.imageio.*

long lastmod = System.currentTimeMillis()

(1..2000).each{
  def bi = new BufferedImage(2048, 1364, BufferedImage.TYPE_INT_RGB)
  def g = bi.createGraphics()
  g.setBackground(Color.black)
  int fontsize = 1200 / Math.max( 1 , ( Math.round(Math.log10(it) + 0.5) -2 ) )
  g.setFont(new Font("Monospaced", Font.PLAIN, fontsize))
  g.setColor(Color.white)
  g.drawString("${it}", 200, 1182 )
  def out =  new File("/tmp/testimg/${it}.jpg")
  ImageIO.write(bi, "jpg", out)
  out.setLastModified(lastmod - ( 1000L * 60 * 60 * 24 * it))
  print "." 
  if(it % 10 == 0){
    println ""
  }
}