Growing Root - Scroll control - CANVAS

Developer
Charlie Walter
Size
2,342 Kb
Views
4,046

How do I make an growing root - scroll control - canvas?

Reads a path to figure out where to be in terms of x goes from -50 to 50 in this example. What is a growing root - scroll control - canvas? How do you make a growing root - scroll control - canvas? This script and codes were developed by Charlie Walter on 11 January 2023, Wednesday.

Growing Root - Scroll control - CANVAS Previews
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Growing Root - Scroll control - CANVAS - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Growing Root - Scroll control - CANVAS</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="canvasTree"></canvas> <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src='https://raw.githubusercontent.com/epistemex/cardinal-spline-js/master/curve.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Growing Root - Scroll control - CANVAS - Script Codes CSS Codes

body { text-align: center; height:2300px; margin: 0; background: #181009;	}	canvas#canvasTree { position: fixed; left: 0; margin-left: auto; margin-right: auto; background: #181009;	}

Growing Root - Scroll control - CANVAS - Script Codes JS Codes

var canvas = document.getElementById("canvasTree"), context = canvas.getContext("2d"), center = 0, scroll_top = 0, scroll_resistance = 100; // cannot be < || == 0
canvas.setAttribute("width", 400 + "px");
canvas.setAttribute("height", 400 + "px");
var main_root_path = [ 5,20,40,50,55,54,50,40,20,5,-20,-40,-50,-54,-55,-50,-40,-20,-5,5,20,40,50,55,54,50,40,20,5,-20,-40,-50,-54,-55,-50,-40,-20,-5,5,20,40,50,55,54,50,40,20,5,-20,-40,-50,-54,-55,-50,-40,-20,-5,5,20,40,50,55,54,50,40,20,5,-20,-40,-50,-54,-55,-50,-40,-20,-5,5,20,40,50,55,54,50,40,20,5,-20,-40,-50,-54,-55,-50,-40,-20,-5,5,20,40,50,55,54,50,40,20,5,-20,-40,-50,-54,-55,-50,-40,-20,-5,5,20,40,50,55,54,50,40,20,5,-20,-40,-50,-54,-55,-50,-40,-20,-5,5,20,40,50,55,54,50,40,20,5,-20,-40,-50,-54,-55,-50,-40,-20,-5
]
center = canvas.width/2;
setInterval(function(){ context.clearRect(0,0,canvas.width,canvas.height); context.strokeStyle = "limegreen"; context.beginPath(); context.moveTo(center, -10); for(var i=0; i<scroll_top; i+=1){ if(i <= main_root_path.length){ if(scroll_top < main_root_path.length){ context.lineWidth = scroll_top-i; }else{ context.lineWidth = main_root_path.length-i; } context.lineTo(center+main_root_path[i], i*20); context.moveTo(center+main_root_path[i], i*20); context.stroke(); } } context.closePath();
},100);
window.onscroll=function(){ scroll_top = document.documentElement.scrollTop || document.body.scrollTop; scroll_top = Math.round(scroll_top/scroll_resistance);
};
// Only bit of JQuery, just for CODEPEN iframe
$('html,body').animate({scrollTop: 2300}, 1000, function(){ $('html,body').animate({scrollTop: 1150}, 1000);
});
Growing Root - Scroll control - CANVAS - Script Codes
Growing Root - Scroll control - CANVAS - Script Codes
Home Page Home
Developer Charlie Walter
Username cjonasw
Uploaded January 11, 2023
Rating 3
Size 2,342 Kb
Views 4,046
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