Instable Connection
How do I make an instable connection?
What is a instable connection? How do you make a instable connection? This script and codes were developed by André Michelle on 18 October 2022, Tuesday.
Instable Connection - Script Codes HTML Codes
<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Instable Connection</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <div id="demo"> <canvas id="canvas" width="512" height="512">no canvas, no shlanvas</canvas>
</div> <script src="js/index.js"></script>
</body>
</html>
Instable Connection - Script Codes CSS Codes
html, body { background:black; color: #FFCC20; font-family: Gotham, "Helvetica Neue", Helvetica, Arial, sans-serif;
}
#demo { padding-left: 0; padding-right: 0; margin-left: auto; margin-right: auto; display: block; width: 512px;
}
Instable Connection - Script Codes JS Codes
var canvas = document.getElementById("canvas");
var context = canvas.getContext("2d");
var width = canvas.width;
var height = canvas.height;
// Design
var circleFill = "rgba(255,160,30,1)";
var Particle = function (sx, sy) { this.sx = sx; this.sy = sy; this.vx = 0.0; this.vy = 0.0;
};
// create particles
var n = 255;
var particles = [];
for (var i = 0; i < n; ++i) { var sx = Math.random() * canvas.width; var sy = Math.random() * canvas.height; particles[i] = new Particle(sx, sy);
}
var drawLine = function (x0, y0, x1, y1, alpha) { context.lineWidth = "hairline"; context.strokeStyle = "rgba(255,160,30," + alpha + ")"; context.beginPath(); context.moveTo(x0, y0); context.lineTo(x1, y1); context.closePath(); context.stroke();
};
var drawCircle = function (x, y, r) { context.fillStyle = circleFill; context.beginPath(); context.arc(x, y, r, 0.0, Math.PI * 2.0); context.closePath(); context.fill();
};
var mouseX = 0.0;
var mouseY = 0.0;
// Physics Properties
var particleInfluenceRadius = 26.0;
var particleAttractionRadius = 18.0;
var partcileAttrationForce = 1.0 / 200.0;
var partcileVelocityDecay = 0.99;
var particleMouseInfluenceRadius = 48.0;
var particleMouseRejectionForce = 1.0 / 96.0;
var solveAndDraw = function () { var strength; var i = particles.length; while (--i > -1) { var particle = particles[i]; var j = i; while (--j > -1) { var neighbour = particles[j]; var dx = particle.sx - neighbour.sx; var dy = particle.sy - neighbour.sy; var dd = Math.sqrt(dx * dx + dy * dy); if (dd > particleInfluenceRadius) { //-- out of radius } else if (dd > particleAttractionRadius) { //-- attraction particle.vx -= dx * partcileAttrationForce; particle.vy -= dy * partcileAttrationForce; neighbour.vx += dx * partcileAttrationForce; neighbour.vy += dy * partcileAttrationForce; strength = 1.0 - (dd - particleAttractionRadius) / (particleInfluenceRadius - particleAttractionRadius); drawLine( particle.sx, particle.sy, neighbour.sx, neighbour.sy, strength); } else if (dd > 0.0) { //-- rejection:spring dd = 0.5 * (dd - particleAttractionRadius) / dd; dx *= dd; dy *= dd; particle.vx -= dx; particle.vy -= dy; neighbour.vx += dx; neighbour.vy += dy; drawLine( particle.sx, particle.sy, neighbour.sx, neighbour.sy, 1.0); } } }
};
var moveAndDraw = function () { for (var i = 0; i < n; ++i) { var particle = particles[i]; var sx = particle.sx; var sy = particle.sy; // mouse attraction var dx = mouseX - sx; var dy = mouseY - sy; var dd = Math.sqrt(dx * dx + dy * dy); if (dd < particleMouseInfluenceRadius) { particle.vx -= dx * particleMouseRejectionForce; particle.vy -= dy * particleMouseRejectionForce; } // damp velocity particle.vx *= partcileVelocityDecay; particle.vy *= partcileVelocityDecay; // apply velocity sx += particle.vx; sy += particle.vy; // bounds if (sx < 0) { sx = 0; particle.vx = -particle.vx; } else if (sx > width) { sx = width; particle.vx = -particle.vx; } if (sy < 0) { sy = 0; particle.vy = -particle.vy; } else if (sy > height) { sy = height; particle.vy = -particle.vy; } // draw drawCircle(sx, sy, 2.0); // write back particle.sx = sx; particle.sy = sy; }
};
var enterFrame = function () { context.clearRect(0, 0, width, height); solveAndDraw(); moveAndDraw(); window.requestAnimationFrame(enterFrame);
};
var mouseMove = function (e) { mouseX = e.offsetX; mouseY = e.offsetY;
};
window.requestAnimationFrame(enterFrame);
canvas.addEventListener("mousemove", mouseMove);
![Instable Connection - Script Codes](http://shots.codepen.io/andremichelle/pen/yIkzx-512.jpg)
Developer | André Michelle |
Username | andremichelle |
Uploaded | October 18, 2022 |
Rating | 4.5 |
Size | 2,828 Kb |
Views | 18,216 |
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