Tilemaps Day 2

This evening I continued experimenting with designing pixelated tiles at a 32X32 resolution.

My “Hothead” font is available for sale on Creative Fabrica here.


Lately I’ve been following some Udemy courses, particularly the one on 2D game Design with Unity.

In the course I started learning about tilemaps and so I started drawing some of my own today.

For prototyping the tilemap I made a sample scene, which I found out was useful as an illustration photo for one of my new fonts: Hothead.

It’s fun when the different skills come together and supplement each other.

My new font is available on DaFont here.

EAN Barcodes and GEPIR

A simple search application for searching through the Product Open Database can be found here.

I’ve been working more on Code128 by writing programs that both create Code128 from strings directly and making my own Code128 font based on the Wikipedia entry.

Then I became curious about the EAN13 symbology and thought I’d have a go at making an EAN SVG program that takes the first twelve digits of an EAN and creates a barcode in SVG format.

The Java code can be found on github here.

Here’s some of the more interesting functions.

public class EAN {

	HashMap<String, String[]> table = new HashMap<String, String[]>();
	String lgr;
	String number;
	String binaryString;
	int checksum;

	public static String binToDecSeq(String seq) {
		String s = "";
		int sum = 1;
		for(int i = 1; i < seq.length(); i++) {
			if(seq.charAt(i) != seq.charAt(i - 1)) {
				s = s + sum;
				sum = 1;
			} else {
			if(i == seq.length() - 1) {
				s = s + sum;
		return s;

	public static String createBinaryString(String number, String lgr, HashMap<String, String[]> table) {
		String binaryString = "";
		lgr = lgr + "RRRRRR";
		number = number.substring(1);
		binaryString += "101";
		for(int i = 0; i < number.length(); i++) {
			binaryString += table.get("" + lgr.charAt(i))[Character.getNumericValue(number.charAt(i))];
			if(i == 5)
				binaryString += "01010";
		binaryString += "101";
		return binaryString;
	public static HashMap<String, String[]> makeTable() {
		HashMap<String, String[]> table = new HashMap<String, String[]>();
		table.put("L", new String[] { "0001101", "0011001", "0010011", "0111101", "0100011", "0110001",
				"0101111", "0111011", "0110111", "0001011" });
		table.put("R", new String[] { "1110010", "1100110", "1101100", "1000010", "1011100", "1001110",
				"1010000", "1000100", "1001000", "1110100" });
		table.put("G", new String[] { "0100111", "0110011", "0011011", "0100001", "0011101", "0111001",
				"0000101", "0010001", "0001001", "0010111" });
		return table;
	public static int calculateChecksum(String twelveDigits) {
		int checksum = 0;
		for(int i = 0; i < twelveDigits.length() && i < 12; i++) {
			String s = "" + twelveDigits.charAt(i);
			if(i % 2 == 0) {
				checksum += Integer.parseInt(s) * 1;
			} else {
				checksum += Integer.parseInt(s) * 3;
		checksum = 10 - (checksum % 10);
		return checksum;


Web-Drafter update: Color Picker

My very tiny vector graphics application is improving at a snail pace.

I managed to make a colour picker using jQuery and the HTML range input element.

The code isn’t exactly succinct, but it gets the job done.

Because the program is growing larger, I’m trying to use the OOP facets of JavaScript and put the functions in their respective objects as much as possible, the loose functions in the posfunc.js file creates the dialog:

function color_selector_form(color) {
    frgb = color.get_fill_rgb();
    srgb = color.get_stroke_rgb();

    var red_slider = "<input class='fill_slider' id='red_slider' value="+frgb[0]+" type=\"range\" min=\"0\" max=\"255\"> <br> <div id='rfval' >"+frgb[0]+"</div><br> ";
    var green_slider = "<input class='fill_slider' id='green_slider' value="+frgb[1]+" type=\"range\" min=\"0\" max=\"255\"> <br> <div id='gfval' >"+frgb[1]+"</div><br>";
    var blue_slider = "<input class='fill_slider' id='blue_slider' value="+frgb[2]+" type=\"range\" min=\"0\" max=\"255\"> <br> <div id='bfval' >"+frgb[2]+"</div><br>";
    var fcbox = "<span id=\"fillbox\" style=\"background-color: "+color.fill+"; display: block; height: 50px; width: 50px;\">&nbsp</span>";

    var red_stroke_slider = "<input class='stroke_slider' id='red_stroke_slider' value="+srgb[0]+" type=\"range\" min=\"0\" max=\"255\"> <br> <div id='rsval' >"+srgb[0]+"</div><br> ";
    var green_stroke_slider = "<input class='stroke_slider' id='green_stroke_slider' value="+srgb[1]+" type=\"range\" min=\"0\" max=\"255\"> <br> <div id='gsval' >"+srgb[1]+"</div><br>";
    var blue_stroke_slider = "<input class='stroke_slider' id='blue_stroke_slider' value="+srgb[2]+" type=\"range\" min=\"0\" max=\"255\"> <br> <div id='bsval' >"+srgb[2]+"</div><br>";
    var scbox = "<span id=\"strokebox\" style=\"background-color: "+color.stroke+"; display: block; height: 50px; width: 50px;\">&nbsp</span>";

    var retval = "<table><tr><td>Fill<br><br>";
    retval += "Red: <br>" + red_slider + "Green: <br>" + green_slider + "Blue: <br>" + blue_slider + "<br>" + fcbox;
    retval += "</td><td>&nbsp&nbsp&nbsp</td><td>Stroke<br><br>";
    retval += "Red: <br>" + red_stroke_slider + "Green: <br>" + green_stroke_slider + "Blue: <br>" + blue_stroke_slider + "<br>" + scbox;
    retval += "</td></tr></table>";
    return retval;

While the pos.js has the $(document).ready() functions for the dynamically created elements:

jQuery(document).on("change mousemove", ".fill_slider", function() {
   selected_color.update_fill(jQuery(this).val(), jQuery(this).attr("id"));
   var id = jQuery(this).attr("id");
   //console.log(id + " " +jQuery(this).val());
   if(id.substring(1, 2) == "r") {
       } else  if(id.substring(1, 2) == "g") {
       } else  if(id.substring(1, 2) == "b") {

Which in turn calls the appropriate methods in the MyColor object.

MyColor.prototype.update_fill = function(colorval, id) {
    var hexredval = parseInt(colorval).toString(16);
    if(hexredval.length < 2)
        hexredval = "0" + hexredval;
    var channel = id.substring(0,1);
    if(channel == "r")
        this.fill = (this.fill.substring(0, 1) + hexredval.substring(0, 2) + this.fill.substring(3)).toUpperCase();
    else if(channel == "g")
        this.fill = (this.fill.substring(0, 3) + hexredval.substring(0, 2) + this.fill.substring(5)).toUpperCase();
    else if(channel == "b")
        this.fill = (this.fill.substring(0, 5) + hexredval.substring(0, 2)).toUpperCase();
    jQuery("#" + channel + "fval").html(colorval);
    jQuery("#fillbox").css("background-color", this.fill);

As you can see, the code isn’t really DRY, but I find that making a clumsy solution is a great way to start a project and get anything done whatsoever, and then improve on it (or just keep it until it becomes cluttered).

Interactive jQuery Menu

A few days ago I was asked to update the layout of the website for a store I used to work at.

I thought this was a good chance to get to know jQuery animations, so I put together a bunch of stock images as background, edited pictures of frames and put some text in the frames for the icons.

I worked with artboards in Affinity Designer so I could export multiple images to different files, I also worked with groups and a transparent background so I could make .png files of the frames and put them on top of the background images.

That way I used the background-image css property, with display set to block and could superimpose a png with transparency over another image.

With jQuery I selected all images, where each image has a class “RT” and I used the reserved word this to select the particular instance for mouseover and mouseleave events.

With this I managed to make a fun little menu where the frame with the text grows and shrinks according to mouse-events.

The result can be seen here.


I noticed that my programming page was sadly empty.

So to have some actual content I started writing a bit about C so I can rehash and remind myself of what I’ve learned about the C programming language.

It’s some really basic stuff, and of course, I’ve made programs to do a lot more than just print to terminal and work on simple variables, but I have to start somewhere when I write about that stuff.

Let's start at the very beginning. 

A very good place to start.

When you read you begin with ABC.

When you code you compile with G C C

Fontstats Plugin

Today I finished a little WordPress plugin I’ve been working on.

It’s a two part plugin, one php script collects data from any Norwegian designer on DaFont by visiting each site, and by the power of Regex-Grayskull it inserts it into a database on my website.

The WordPress plugin then selects the last sampled date and displays it in a HTML-table on any post or page where I insert the registered shortcode.

Here’s the result:

No.DownloadsDesignerDate SampledCountry
1114761678Måns Grebäck2020-02-11Sweden
224433313Pizzadude - Jakob Fischer2020-02-11Denmark
34747801Johan Waldenström2020-02-11Sweden
43722832Carl Krull2020-02-11Denmark
53260425Fontourist - Hans Gerhard Meier2020-02-11Norway
63148481Johan Aakerlund2020-02-11Denmark
72797975Listemageren - Klaus Johansen2020-02-11Denmark
82545817CheapProFonts - Roger S. Nelsson2020-02-11Norway
92155209HENRIavecunK - Henrik2020-02-11Sweden
101311926Flight of the Dragon - Hasan Guven2020-02-11Norway
111155057Christian Munk2020-02-11Denmark
12804167Adam Ericsson2020-02-11Sweden
14721220Your Own Font - Ellinor Rapp2020-02-11Sweden
15564668Vinterstille TypeFaceLab - Klaus Nielsen2020-02-11Denmark
16520173Viktor Hammarberg2020-02-11Sweden
17504161Moonbase Press - Svein Kåre Gunnarson2020-02-11Norway
18412396Thor Christopher Arisland2020-02-11Norway
19411754Espen Morten Kvalheim2020-02-11Norway
20359890Staffan Vilcans2020-02-11Sweden
21352286Martin Holm2020-02-11Norway
22322042Jonas Borneland Hansen2020-02-11Denmark
23295833Lene Arensdorff2020-02-11Denmark
24239102Norwegian Ink / Design for Dough - Frode Nordbø2020-02-11Norway
25213031David Engelby2020-02-11Denmark
26209374Anton - Anton Lundström2020-02-11Sweden
27201612dawnland - Daniel Viberg2020-02-11Sweden
28183337211178 Creative Agency - Morten Talleivsen2020-02-11Norway
29146841Martin Sørensen2020-02-11Denmark
30129619Andreas Larsen2020-02-11Denmark
31119764Nils Kähler2020-02-11Denmark
32101433Bolahool Graphics2020-02-11Sweden
3492510Anton Bohlin2020-02-11Sweden
3591226Joaquim Marquès Nielsen2020-02-11Denmark
3683974Carl Enlund2020-02-11Sweden
3783195Pär Lundkvist2020-02-11Sweden
3876299Digital Flame Studios - sindre små2020-02-11Norway
4066052huskmelk - Rashid Akrim2020-02-11Norway
4161125Kyrre Honohan2020-02-11Norway
4255907Pia Hed Aspell2020-02-11Sweden
4354912Nadia Rosenfeldt2020-02-11Denmark
4452618Linn Mustanoja2020-02-11Sweden
4551868Lars Håhus2020-02-11Sweden
4645677ronjam - Ronja Melcker2020-02-11Sweden
4743326Atle Mo2020-02-11Norway
4837263Erik Jeddere-Fisher2020-02-11Norway
4936545Benjamin Blåholtz2020-02-11Sweden
5035312Arman Ay2020-02-11Sweden
5134798benjamin rauber2020-02-11Sweden
5331327Studio Indigo - Helena Öhman2020-02-11Sweden
5428722Christian Koch2020-02-11Denmark
5527594Botond Bokor2020-02-11Sweden
5627588Mark Lund2020-02-11Norway
5727188Dan Thorup2020-02-11Denmark
5826406Andrew Nordquist2020-02-11Sweden
6025239Aske Ching2020-02-11Denmark
6122515Erik Holm2020-02-11Norway
6321518Henrik Johansson2020-02-11Sweden
6421080Bull - Sandra Madsen2020-02-11Denmark
6521033David Lindecrantz2020-02-11Sweden
6620143Kristian Dalen2020-02-11Norway
6717505Mandy Pandy2020-02-11Sweden
6814560Alexander Rossebø2020-02-11Norway
6912924Johan Brodd2020-02-11Sweden
7011999Viktor Örneland2020-02-11Sweden
7110201Mathias Alvebring2020-02-11Sweden
747806Mathias Rue2020-02-11Denmark
757467Gröt Havregrynsson2020-02-11Sweden
767421Manuela Hardy2020-02-11Norway
787049Sara Lindberg2020-02-11Sweden
796583Mattis Folkestad2020-02-11Norway
806443Oliver Waldemar2020-02-11Sweden
815359Simon Jakobsson2020-02-11Sweden
824501KingDGaming - Elias Eriksson2020-02-11Sweden