Subj : Re: Printing on Commodore printer without Commodore 64
To   : sblen...@gmail.com
From : Rami
Date : Tue May 08 2018 03:55:12

Awesome! I'll have a look as soon as possible. 



On Tuesday, May 8, 2018 at 12:35:42 AM UTC+3, sblen...@gmail.com wrote:
> Il giorno lunedì 7 maggio 2018 15:54:00 UTC+2, sblen...@gmail.com ha 
scritto:
> 
> > Printing text is quite simple.
> 
> You can also print graphics. This is an example of what you can do:
> https://imgur.com/a/gyxkkqk
> 
> I did it writing a simple "driver" in Java that converts images (for now in 
black and white, with white background) into commands for the Commodore MPS 803 
printer:
> 
> 
> package eu.sblendorio;
> 
> import javax.imageio.ImageIO;
> import java.awt.image.*;
> import java.io.File;
> import java.io.IOException;
> 
> public class Main {
> 
>     public static void main(String[] args) throws IOException {
>         if (args.length == 0) System.exit(1);
>         final String filename = args[0];
>         File f = new File(filename);
>         BufferedImage bi = ImageIO.read(f);
> 
>         print(bi);
>     }
> 
>     static int getPixel(BufferedImage bi, int x, int y) {
>         final int w = bi.getWidth();
>         final int h = bi.getHeight();
> 
>         if (x >= w || y >= h || x < 0 || y < 0)
>             return 0;
> 
>         final boolean pixel = bi.getRGB(x, y) != -1;
>         return pixel ? 1 : 0;
>     }
> 
>     static void print(BufferedImage bi) {
>         final int pow[] = {1, 2, 4, 8, 16, 32, 64};
>         final int w = bi.getWidth();
>         final int h = bi.getHeight();
>         int rows = h / 7 + (h % 7 == 0 ? 0 : 1);
>         System.out.write(8);
>         for (int row=0; row<rows; ++row) {
>             for (int x=0; x<w; ++x) {
>                 int code = 128;
>                 for (int dy=0; dy<7; ++dy) {
>                     final int pixel = getPixel(bi, x,(row * 7) + dy);
>                     code += pow[dy]*pixel;
>                 }
>                 System.out.write(code);
>             }
>             System.out.write(13);
>         }
>         System.out.write(15);
>         System.out.write(13);
>     }
> }

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