Vector Based Movement

Developer
Timo Hausmann
Size
2,568 Kb
Views
10,120
  1. Vector Based Movement Previews
  2. Vector Based Movement HTML Codes
  3. Vector Based Movement CSS Codes
  4. Vector Based Movement JS Codes

How do I make an vector based movement?

These particles use a ridiciously simple Vector Object: http://trashnet.de/js/Vector.jsIf you want to learn more, this eBook is awesome. (Actually for Processing). What is a vector based movement? How do you make a vector based movement? This script and codes were developed by Timo Hausmann on 16 October 2022, Sunday.

Vector Based Movement Previews
IQ Test

Vector Based Movement - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Vector Based Movement</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="canvas" width="640" height="480"></canvas>
<!-- Awesomely simple vector movement, based on
http://natureofcode.com/book/chapter-1-vectors/
--> <script src='https://trashnet.de/js/Vector.js'></script> <script src="js/index.js"></script>
</body>
</html>

Vector Based Movement - Script Codes CSS Codes

body {	margin: 0;	background: black;
}
canvas { display: block;
}

Vector Based Movement - Script Codes JS Codes

Math.randMinMax=function(t,n,a){var r=t+Math.random()*(n-t)
return a&&(r=Math.round(r)),r}
var	canvas = document.querySelector('#canvas'),	ctx = canvas.getContext('2d'),	mousePos,	myObj = [],	amount = 16,	color = 0,	isMousePressed = false;
function Obj( x, y, colorOffset ) {	this.pos	= new Vector(x, y);	this.velocity	= new Vector(0,0);	this.acceleration	= new Vector(0,0);	this.colorOffset	= colorOffset;
};
Obj.prototype = {	update : function() {	var dir = mousePos.get();	dir.sub( this.pos );	dir.normalize();	dir.mult( 0.5 );	if( isMousePressed ) {	dir.mult( -1 );	}	this.acceleration = dir;	this.velocity.add( this.acceleration );	this.velocity.limit( 10 );	this.pos.add( this.velocity );	this.checkEdges();	},	checkEdges : function() {	if( this.pos.x > canvas.width ) this.pos.x = 0;	if( this.pos.x < 0 ) this.pos.x = canvas.width;	if( this.pos.y > canvas.height ) this.pos.y = 0;	if( this.pos.y < 0 ) this.pos.y = canvas.height;	},	draw : function( ctx ) {	ctx.fillStyle = 'hsl(' + (color+this.colorOffset) + ', 100%, 60%)';	ctx.fillRect( this.pos.x, this.pos.y, 3, 3 );	}
};
function setup() {	canvas.width = window.innerWidth;	canvas.height = window.innerHeight;	for( var i=0;i<amount;i++) {	myObj[i] = new Obj(	Math.randMinMax(0,canvas.width),	Math.randMinMax(0,canvas.height),	i*15 );	}	mousePos = new Vector( canvas.width/2, canvas.height/2 );	canvas.addEventListener('mousemove', function(e) {	mousePos.x = e.offsetX || e.layerX,	mousePos.y = e.offsetY || e.layerY;	});	canvas.addEventListener('mousedown', function(e) {	isMousePressed = true;	});	canvas.addEventListener('mouseup', function(e) {	isMousePressed = false;	});
}
function loop() {	ctx.fillStyle = 'rgba(0,0,0,0.2)';	ctx.fillRect(0, 0, canvas.width, canvas.height );	color += 1;	for( var i=0;i<amount;i++) {	myObj[i].update();	myObj[i].draw( ctx );	}	window.requestAnimationFrame( loop );
}
window.setTimeout(function() {	setup();	loop();
}, 100);
Vector Based Movement - Script Codes
Vector Based Movement - Script Codes
Home Page Home
Developer Timo Hausmann
Username timohausmann
Uploaded October 16, 2022
Rating 4
Size 2,568 Kb
Views 10,120
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