@Grab(group='com.craigburke.document', module='pdf', version='0.3.1')
@Grab(group='com.craigburke.document', module='word', version='0.3.1')
@Grab('com.bloidonia:ascii-image:1.1')
import com.bloidonia.asciiimage.AsciImageProcessor
import java.awt.image.BufferedImage
import java.awt.RenderingHints
import java.awt.Color
import javax.imageio.ImageIO

import com.craigburke.document.builder.PdfDocumentBuilder
import com.craigburke.document.builder.WordDocumentBuilder

byte[] imageData = new ByteArrayOutputStream().with { baos ->
    AsciImageProcessor.fromLines([
        '. . . . . . .',
        '. . 3 . . . .',
        '. 1 2 . . . .',
        '. . . . . 4 .',
        '. 7 6 . . . .',
        '. . 5 . . . .',
        '. . . . . . .'
    ]).asBufferedImage { ctx ->
        ctx.type(BufferedImage.TYPE_INT_ARGB)
           .scale(10)
           .graphics { g ->
               g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
               g.paint = Color.BLACK
           }
    }.render().with { img ->
        try {
            ImageIO.write(img, 'png', baos)
            baos.flush()
            baos.toByteArray()
        }
        finally { baos.close() }
    }
}

[new WordDocumentBuilder(new File('/tmp/example.docx')),
 new PdfDocumentBuilder(new File('/tmp/example.pdf'))].each { builder ->
    builder.create {
        document {
            paragraph {
                image(data: imageData, name: 'groovy.png') 
            }
        }
    }
}