franciscojsc · May 29, 2018 05:05
diff --git a/index.html b/index.html
 <!-- Fonte: http://thecodeplayer.com/walkthrough/matrix-rain-animation-html5-canvas-javascript -->

 <!DOCTYPE html>
 <html>
 <head>
 <meta name="description" content="[Efeito Matrix]">
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Matrix</title>
  <style type="text/css">
   <link rel="stylesheet" type="text/css" href="style.css"> 
   <script type="text/javascript" src="script.js"></script>  
  </style>
 </head>
 <body> 
    <canvas id="c"></canvas>
 </body>
 </html>
diff --git a/script.js b/script.js
 window.onload = function () {
  var c = document.getElementById("c");
    var ctx = c.getContext("2d");

    //making the canvas full screen
    c.height = window.innerHeight;
    c.width = window.innerWidth;

    //chinese characters - taken from the unicode charset
    var chinese = "田由甲申甴电甶男甸甹町画甼甽甾甿畀畁畂畃畄畅畆畇畈畉畊畋界畍畎畏畐畑";
    //converting the string into an array of single characters
    chinese = chinese.split("");

    var font_size = 10;
    var columns = c.width/font_size; //number of columns for the rain
    //an array of drops - one per column
    var drops = [];
    //x below is the x coordinate
    //1 = y co-ordinate of the drop(same for every drop initially)
    for(var x = 0; x < columns; x++)
      drops[x] = 1; 

    //drawing the characters
    function draw()
    {
      //Black BG for the canvas
      //translucent BG to show trail
      ctx.fillStyle = "rgba(0, 0, 0, 0.05)";
      ctx.fillRect(0, 0, c.width, c.height);

      ctx.fillStyle = "#0F0"; //green text
      ctx.font = font_size + "px arial";
      //looping over drops
      for(var i = 0; i < drops.length; i++)
      {
        //a random chinese character to print
        var text = chinese[Math.floor(Math.random()*chinese.length)];
        //x = i*font_size, y = value of drops[i]*font_size
        ctx.fillText(text, i*font_size, drops[i]*font_size);

        //sending the drop back to the top randomly after it has crossed the screen
        //adding a randomness to the reset to make the drops scattered on the Y axis
        if(drops[i]*font_size > c.height && Math.random() > 0.975)
          drops[i] = 0;

        //incrementing Y coordinate
        drops[i]++;
      }
    }

    setInterval(draw, 33);
 };
diff --git a/style.css b/style.css
 /*basic reset*/
 * {margin: 0; padding: 0;}
 /*adding a black bg to the body to make things clearer*/
 body {background: black;}
 canvas {display: block;}
	<!-- Fonte: http://thecodeplayer.com/walkthrough/matrix-rain-animation-html5-canvas-javascript -->

	<!DOCTYPE html>
	<html>
	<head>
	<meta name="description" content="[Efeito Matrix]">
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width">
	<title>Matrix</title>
	<style type="text/css">
	<link rel="stylesheet" type="text/css" href="style.css">
	<script type="text/javascript" src="script.js"></script>
	</style>
	</head>
	<body>
	<canvas id="c"></canvas>
	</body>
	</html>
	window.onload = function () {
	var c = document.getElementById("c");
	var ctx = c.getContext("2d");

	//making the canvas full screen
	c.height = window.innerHeight;
	c.width = window.innerWidth;

	//chinese characters - taken from the unicode charset
	var chinese = "田由甲申甴电甶男甸甹町画甼甽甾甿畀畁畂畃畄畅畆畇畈畉畊畋界畍畎畏畐畑";
	//converting the string into an array of single characters
	chinese = chinese.split("");

	var font_size = 10;
	var columns = c.width/font_size; //number of columns for the rain
	//an array of drops - one per column
	var drops = [];
	//x below is the x coordinate
	//1 = y co-ordinate of the drop(same for every drop initially)
	for(var x = 0; x < columns; x++)
	drops[x] = 1;

	//drawing the characters
	function draw()
	{
	//Black BG for the canvas
	//translucent BG to show trail
	ctx.fillStyle = "rgba(0, 0, 0, 0.05)";
	ctx.fillRect(0, 0, c.width, c.height);

	ctx.fillStyle = "#0F0"; //green text
	ctx.font = font_size + "px arial";
	//looping over drops
	for(var i = 0; i < drops.length; i++)
	{
	//a random chinese character to print
	var text = chinese[Math.floor(Math.random()*chinese.length)];
	//x = ifont_size, y = value of drops[i]font_size
	ctx.fillText(text, ifont_size, drops[i]font_size);

	//sending the drop back to the top randomly after it has crossed the screen
	//adding a randomness to the reset to make the drops scattered on the Y axis
	if(drops[i]*font_size > c.height && Math.random() > 0.975)
	drops[i] = 0;

	//incrementing Y coordinate
	drops[i]++;
	}
	}

	setInterval(draw, 33);
	};
	/basic reset/
	* {margin: 0; padding: 0;}
	/adding a black bg to the body to make things clearer/
	body {background: black;}
	canvas {display: block;}