Category Archives: Uncategorized

Recent Shorts

By Zevan | July 27, 2024

Been speed coding some new stuff and showcasing some old stuff as shorts on youtube - here is a recent one:

Check out the rest here: https://www.youtube.com/@shapevent/shorts

Also posted in Graphics, Math, graphics algorithms, html5, javascript, misc, motion, random | Leave a comment

Easy i-ching Symbols

By Zevan | August 21, 2018

I have so many little snippets like this laying around, at first I didn’t remember writing this when I found it the other day… then it slowly came back to me.

Looks like this is another one from the jQuery days:

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title></title>
    <script src="http://code.jquery.com/jquery-latest.min.js"></script>
    <script>
      $(function(){
 
        // meaning: http://www.ichingfortune.com/hexagrams.php
        // starting hex: &#x4DC0;
 
        var flash = $('.flash'),
            syms = $('.syms'),
            num = $('.num'),
            start = 0x4DC0,
            total = 64,
            tick = 0;
 
        for (var i = 0; i < total; i++) {
          $('<div>', {
            html: '&#x' + (start + i).toString(16)
          }).appendTo(syms);
        }
 
        flash.html(syms.html());
        flash.find('div').hide().first().show();
 
        setInterval(function() {
          var index = tick % total,
              curr = flash.children().eq(index)
              .show()
              .siblings().hide();
 
          curr = syms.children().eq(index)
            .css('color', 'red')
            .siblings().css('color', 'black');
 
          num.text(index + 1);
          tick++;
        }, 600);
 
      });
    </script>
    <style>
      * {
        font-family: "Helvetica Neue", Helvetica, sans-serif;  
      }
 
      .syms div {
        position: relative;
        float: left;  
        font-size: 3em;
        -webkit-transition: color 300ms ease-out;
        -ms-transition: color 300ms ease-out;
        -o-transition: color 300ms ease-out;
        transition: color 300ms ease-out;
      }
 
      .flash {
        position: relative;
        height: 6em;  
      }
 
      .flash div {
        position: absolute;
        left: 0; top: 0;
        font-size: 6em;
        color: red;
        -webkit-transform: rotate(90deg);
        -ms-transform: rotate(90deg);
        -o-transform: rotate(90deg);
        transform: rotate(90deg);
      }
    </style>
  </head>
  <body>
    <h2>i ching : <span class="num">1</span></h2>
    <div class="flash"></div>
    <div class="syms"></div>
  </body>
</html>

The i-ching is a Chinese divinatory system - the “hexagrams” just look very cool, when I noticed they were available starting at `0×4DC0` I made this snippet… think ancient magic 8 ball.

wikipedia article:
https://en.wikipedia.org/wiki/I_Ching

It’s pretty fun to play with this online version:
https://www.eclecticenergies.com/iching/virtualcoins

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Closest Point on a Line

By Zevan | August 3, 2018

For some reason I decided to port a snippet from AS3 to JS. Chose this one:

http://actionsnippet.com/?p=2969#comment-5674
…pretty much at random.

Here is the port in a pen:

This is actually a port of a port from this old thread:
http://www.gamedev.net/topic/444154-closest-point-on-a-line/

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Quick SVG with Javascript

By Zevan | July 27, 2018

If you look into creating SVG dynamically with JavaScript you might stumble upon `document.createElementNS`. In most simple cases, you don’t need to go down that path. Contemporary libraries handle this stuff internally now (they didn’t always) or if you’re going vanilla… you can integrate this kind of thing somewhere:

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