Spring Force

Developer
Lloydwheeler
Size
5,229 Kb
Views
6,072
  1. Spring Force Previews
  2. Spring Force HTML Codes
  3. Spring Force CSS Codes
  4. Spring Force JS Codes

How do I make an spring force?

What is a spring force? How do you make a spring force? This script and codes were developed by Lloydwheeler on 26 January 2023, Thursday.

Spring Force Previews
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Spring Force - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Spring Force</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="canvas"></canvas> <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Spring Force - Script Codes CSS Codes

body { background: #222;
}

Spring Force - Script Codes JS Codes

'use strict';
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var GridParticle = function () {	function GridParticle(x, y, ctx) {	_classCallCheck(this, GridParticle);	this.x = x;	this.y = y;	this.startX = x;	this.startY = y;	this.vX = 0;	this.vY = 0;	this.aX = 0;	this.aX = 0;	this.ctx = ctx;	this.radius = 2;	this.mass = 1;	this.time = Date.now();	}	GridParticle.prototype.draw = function draw() {	this.ctx.fillStyle = 'rgba(255,255,255,1)';	this.ctx.beginPath();	this.ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);	this.ctx.fill();	this.ctx.fillStyle = 'rgba(255,255,255,.05)';	this.ctx.beginPath();	this.ctx.arc(this.startX, this.startY, this.radius * 4, 0, Math.PI * 2);	this.ctx.fill();	};	return GridParticle;
}();
var Grid = function () {	function Grid(context, columns, rows, opacity) {	_classCallCheck(this, Grid);	this.context = context;	this.rows = rows;	this.columns = columns;	this.mouseX = 0;	this.mouseY = 0;	this.canvas = null;	this.ctx = null;	this.opacity = opacity;	this.numParticles = (this.rows + 1) * (this.columns + 1);	this.particles = [];	this.mouseMoved = false;	this.springForce = 3;	this.mouseForce = -1000;	this.b = 0.95;	this.distanceLimit = 100;	this.init();	}	Grid.prototype.init = function init() {	this.initCanvas();	$(this.context).mousemove(this.handleMouseMove.bind(this));	// var img = new Image();	// img.src = this.canvas.toDataURL("image/png");	// console.log(img.src);	// $('body').append(img);	};	// Initialise the canvas	//	// @private	//	Grid.prototype.initCanvas = function initCanvas() {	this.canvas = $(this.context)[0];	this.ctx = this.canvas.getContext('2d');	this.canvas.width = $(window).width();	this.canvas.height = $(window).height();	this.ctx.globalCompositeOperation = 'destination-over';	this.createGrid();	this.time = Date.now();	};	// Layout the grid	//	// @private	//	Grid.prototype.createGrid = function createGrid() {	var x = 0;	var y = 0;	while (this.numParticles--) {	var particle = new GridParticle(x, y, this.ctx);	x += this.canvas.width / this.columns;	if (x > this.canvas.width + 12) {	x = 0;	y += this.canvas.height / this.rows;	}	this.particles.push(particle);	}	this.draw();	};	// Draw the grid	//	// @private	//	Grid.prototype.draw = function draw() {	var _this = this;	this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);	this.particles.forEach(function (particle, index) {	_this.applyForce(particle);	// particle.draw();	_this.drawConnections(particle, index);	});	// Start the drawing loop	requestAnimationFrame(this.draw.bind(this));	};	// Handle mouse movement	//	// @private	//	Grid.prototype.handleMouseMove = function handleMouseMove(e) {	this.mouseX = e.offsetX;	this.mouseY = e.offsetY;	};	// Update the position of the particle relative to the mouse	//	// @private	//	Grid.prototype.applyForce = function applyForce(particle) {	var now = Date.now();	var t = Math.min((now - particle.time) / 1000, 1 / 60);	particle.time = now;	var mouseDiffX = this.mouseX - particle.x;	var mouseDiffY = this.mouseY - particle.y;	var mouseDist = Math.sqrt(mouseDiffX * mouseDiffX + mouseDiffY * mouseDiffY);	var mouseAngle = Math.atan2(mouseDiffY, mouseDiffX);	var startDiffX = particle.startX - particle.x;	var startDiffY = particle.startY - particle.y;	var startDist = Math.sqrt(startDiffX * startDiffX + startDiffY * startDiffY);	var startAngle = Math.atan2(startDiffY, startDiffX);	particle.aX = 0;	particle.aY = 0;	var dampingModifier = Math.max(startDist, 0.5);	var startSpringX = this.springForce * Math.cos(startAngle);	particle.aX += startSpringX / particle.mass * startDist;	var startSpringY = this.springForce * Math.sin(startAngle);	particle.aY += startSpringY / particle.mass * startDist;	if (mouseDist < this.distanceLimit) {	var mouseForce = Math.min(this.mouseForce / mouseDist, 10);	// const mouseForce = this.mouseForce / mouseDist;	var springX = mouseForce * Math.cos(mouseAngle);	particle.aX += springX / particle.mass;	var springY = mouseForce * Math.sin(mouseAngle);	particle.aY += springY / particle.mass;	}	particle.vY += particle.aY * t;	particle.vY *= this.b;	particle.y += particle.vY;	particle.vX += particle.aX * t;	particle.vX *= this.b;	particle.x += particle.vX;	};	// Draws the given particles connections	//	// @private	//	Grid.prototype.drawConnections = function drawConnections(particle, index) {	// Only need to draw the connection immediately to the right and below	var nextColumn = this.particles[index + 1];	var nextRow = this.particles[index + this.columns + 1];	particle.draw();	var startDiffX = particle.startX - particle.x;	var startDiffY = particle.startY - particle.y;	var startDist = Math.sqrt(startDiffX * startDiffX + startDiffY * startDiffY);	if (isNaN(startDist)) {	startDist = 0;	}	var opacity = 1 - startDist / this.distanceLimit;	this.ctx.strokeStyle = 'rgba(255,255,255,' + opacity + ')';	this.ctx.lineWidth = 0;	this.ctx.beginPath();	this.ctx.moveTo(particle.x, particle.y);	this.ctx.lineTo(particle.startX, particle.startY);	this.ctx.stroke();	this.ctx.strokeStyle = 'rgba(255,255,255,.15)';	if (index < this.particles.length - 1) {	// If we're not at the end of the row	if ((index + 1) % (this.columns + 1) != 0) {	this.ctx.beginPath();	this.ctx.moveTo(particle.x, particle.y);	this.ctx.lineTo(nextColumn.x, nextColumn.y);	this.ctx.stroke();	}	}	if (index + 1 < this.particles.length - this.columns) {	// If we're not at the end of the column	if ((index + 1) % (this.columns + 1) != 0) {	this.ctx.beginPath();	this.ctx.moveTo(particle.x, particle.y);	this.ctx.lineTo(nextRow.x, nextRow.y);	this.ctx.stroke();	}	}	};	return Grid;
}();
var grid = new Grid('#canvas', 10, 10, 1);
Spring Force - Script Codes
Spring Force - Script Codes
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Developer Lloydwheeler
Username lloydwheeler
Uploaded January 26, 2023
Rating 4.5
Size 5,229 Kb
Views 6,072
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