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.

Tilemap

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 {
				sum++;
			}
			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" });
		table.put("LGR", new String[] { "LLLLLLRRRRRR", "LLGLGGRRRRRR", "LLGGLGRRRRRR", "LLGGGLRRRRRR", "LGLLGGRRRRRR",
				"LGGLLGRRRRRR", "LGGGLLRRRRRR", "LGLGLGRRRRRR", "LGLGGLRRRRRR", "LGGLGLRRRRRR" });
		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") {
        jQuery("#red_val").html(jQuery(this).val());
       } else  if(id.substring(1, 2) == "g") {
           jQuery("#green_val").html(jQuery(this).val());
       } else  if(id.substring(1, 2) == "b") {
           jQuery("#blue_val").html(jQuery(this).val());
       }
   });

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);
    update_color(this);
}

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.

C

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
1113742462Måns Grebäck2019-12-10Sweden
224232419Pizzadude - Jakob Fischer2019-12-10Denmark
34695153Johan Waldenström2019-12-10Sweden
43666428Carl Krull2019-12-10Denmark
53256156Fontourist - Hans Gerhard Meier2019-12-10Norway
63080551Johan Aakerlund2019-12-10Denmark
72786950Listemageren - Klaus Johansen2019-12-10Denmark
82527566CheapProFonts - Roger S. Nelsson2019-12-10Norway
92097671HENRIavecunK - Henrik2019-12-10Sweden
101305016Flight of the Dragon - Hasan Guven2019-12-10Norway
111143533Christian Munk2019-12-10Denmark
12780667Adam Ericsson2019-12-10Sweden
13764368bogstav2019-12-10Denmark
14720169Your Own Font - Ellinor Rapp2019-12-10Sweden
15563128Vinterstille TypeFaceLab - Klaus Nielsen2019-12-10Denmark
16515839Viktor Hammarberg2019-12-10Sweden
17496206Moonbase Press - Svein Kåre Gunnarson2019-12-10Norway
18411053Espen Morten Kvalheim2019-12-10Norway
19404516Thor Christopher Arisland2019-12-10Norway
20358640Staffan Vilcans2019-12-10Sweden
21349295Martin Holm2019-12-10Norway
22321174Jonas Borneland Hansen2019-12-10Denmark
23292210Lene Arensdorff2019-12-10Denmark
24238474Norwegian Ink / Design for Dough - Frode Nordbø2019-12-10Norway
25212223David Engelby2019-12-10Denmark
26208971Anton - Anton Lundström2019-12-10Sweden
27201173dawnland - Daniel Viberg2019-12-10Sweden
28182454211178 Creative Agency - Morten Talleivsen2019-12-10Norway
29145271Martin Sørensen2019-12-10Denmark
30125277Andreas Larsen2019-12-10Denmark
31116689Nils Kähler2019-12-10Denmark
32100703Bolahool Graphics2019-12-10Sweden
3394980McKack2019-12-10Norway
3491304Anton Bohlin2019-12-10Sweden
3591020Joaquim Marquès Nielsen2019-12-10Denmark
3683131Pär Lundkvist2019-12-10Sweden
3776198Digital Flame Studios - sindre små2019-12-10Norway
3873933Carl Enlund2019-12-10Sweden
3973765Intense2019-12-10Norway
4065736huskmelk - Rashid Akrim2019-12-10Norway
4161029Kyrre Honohan2019-12-10Norway
4255782Pia Hed Aspell2019-12-10Sweden
4354745Nadia Rosenfeldt2019-12-10Denmark
4452475Linn Mustanoja2019-12-10Sweden
4551514Lars Håhus2019-12-10Sweden
4645491ronjam - Ronja Melcker2019-12-10Sweden
4743087Atle Mo2019-12-10Norway
4837149Erik Jeddere-Fisher2019-12-10Norway
4934909Arman Ay2019-12-10Sweden
5034492benjamin rauber2019-12-10Sweden
5134176Benjamin Blåholtz2019-12-10Sweden
5233625charmingfan2019-12-10Denmark
5330503Studio Indigo - Helena Öhman2019-12-10Sweden
5428266Christian Koch2019-12-10Denmark
5527525Mark Lund2019-12-10Norway
5627425Botond Bokor2019-12-10Sweden
5727052Dan Thorup2019-12-10Denmark
5826346Andrew Nordquist2019-12-10Sweden
5925984Lisa2019-12-10Norway
6025162Aske Ching2019-12-10Denmark
6122265Erik Holm2019-12-10Norway
6221998Andreas2019-12-10Sweden
6321380Henrik Johansson2019-12-10Sweden
6421025Bull - Sandra Madsen2019-12-10Denmark
6520942David Lindecrantz2019-12-10Sweden
6620111Kristian Dalen2019-12-10Norway
6717460Mandy Pandy2019-12-10Sweden
6814305Alexander Rossebø2019-12-10Norway
6912894Johan Brodd2019-12-10Sweden
7011906Viktor Örneland2019-12-10Sweden
7110143Mathias Alvebring2019-12-10Sweden
729813Boksen2019-12-10Norway
737982vardcentralen2019-12-10Sweden
747773Mathias Rue2019-12-10Denmark
757375Gröt Havregrynsson2019-12-10Sweden
767361Manuela Hardy2019-12-10Norway
777025Caesar2019-12-10Sweden
786990Sara Lindberg2019-12-10Sweden
796556Mattis Folkestad2019-12-10Norway
806350Oliver Waldemar2019-12-10Sweden
815312Simon Jakobsson2019-12-10Sweden
824480KingDGaming - Elias Eriksson2019-12-10Sweden
831167Simon2019-12-10Sweden