Colorful Wanderers

Developer
Satchmorun
Size
3,142 Kb
Views
28,336
  1. Colorful Wanderers Previews
  2. Colorful Wanderers HTML Codes
  3. Colorful Wanderers CSS Codes
  4. Colorful Wanderers JS Codes

How do I make an colorful wanderers?

What is a colorful wanderers? How do you make a colorful wanderers? This script and codes were developed by Satchmorun on 28 August 2022, Sunday.

Colorful Wanderers Previews
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Colorful Wanderers - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Colorful Wanderers</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="canvas"></canvas> <script src="js/index.js"></script>
</body>
</html>

Colorful Wanderers - Script Codes CSS Codes

body { margin: 0; padding: 0; overflow: hidden;
}

Colorful Wanderers - Script Codes JS Codes

var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
'floor|ceil|random|round|abs|sqrt|PI|atan2|sin|cos|pow|max|min|hypot' .split('|') .forEach(function(p) { window[p] = Math[p]; });
var TAU = PI*2;
function r(n) { return random()*n; }
function rrng(lo, hi) { return lo + r(hi-lo); }
function rint(lo, hi) { return lo + floor(r(hi - lo + 1)); }
function choose(args) { return args[rint(0, args.length-1)]; }
/*---------------------------------------------------------------------------*/
var W, H, frame, t0, time, DPR;
function resize() { var w = innerWidth; var h = innerHeight; DPR = devicePixelRatio || 1; canvas.style.width = w+'px'; canvas.style.height = h+'px'; W = canvas.width = w * DPR; H = canvas.height = h * DPR;
}
function loop(t) {
// console.log(1000/(t-t0)); t0 = t; frame = requestAnimationFrame(loop); draw(); time++;
}
function pause() { cancelAnimationFrame(frame); frame = frame ? null : requestAnimationFrame(loop);
}
function reset() { cancelAnimationFrame(frame); resize(); ctx.clearRect(0, 0, W, H); init(); time = 0; frame = requestAnimationFrame(loop);
}
/*---------------------------------------------------------------------------*/
function Vector(x, y) { this.x = x; this.y = y;
}
Vector.add = function(a, b) { return new Vector(a.x + b.x, a.y + b.y); };
Vector.sub = function(a, b) { return new Vector(a.x - b.x, a.y - b.y); };
Vector.mul = function(a, n) { return new Vector(a.x * n, a.y * n); };
Vector.div = function(a, n) { return new Vector(a.x / n, a.y / n); };
Vector.prototype.clone = function() { return new Vector(this.x, this.y);
};
Vector.prototype.add = function(other) { this.x += other.x; this.y += other.y; return this;
};
Vector.prototype.sub = function(other) { this.x -= other.x; this.y -= other.y; return this;
};
Vector.prototype.mul = function(n) { this.x *= n; this.y *= n; return this;
};
Vector.prototype.div = function(n) { this.x /= n; this.y /= n; return this;
}
Vector.prototype.mag = function() { var x = this.x, y = this.y; return sqrt(x*x + y*y);
};
Vector.prototype.normalize = function() { return this.div(this.mag());
};
Vector.prototype.constrain = function(n) { var m = this.mag(); return m > n ? this.mul(n/m) : this;
};
Vector.prototype.zero = function() { this.x = 0; this.y = 0;
};
function vec(x, y) { return new Vector(x, y);
}
/*---------------------------------------------------------------------------*/
function clamp(val, lo, hi) { if (val < lo) return lo; if (val > hi) return hi; return val;
}
function FlowField(resolution) { this.resolution = resolution; this.rows = ceil(H / resolution); this.cols = ceil(W / resolution); this.field = new Array(this.cols); for (var x = 0; x < this.cols; x++) { this.field[x] = new Array(this.rows); for (var y = 0; y < this.rows; y++) { var t = r(TAU); this.field[x][y] = vec(cos(t), sin(t)); } }
}
FlowField.prototype.lookup = function(v) { var y = floor(clamp(v.y/this.resolution, 0, this.rows-1)); var x = floor(clamp(v.x/this.resolution, 0, this.cols-1)); return this.field[x][y];
};
/*---------------------------------------------------------------------------*/
function Particle(loc, vel, max, col) { this.loc = loc; this.vel = vel; this.max = max; this.col = col; this.acc = vec(0, 0);
}
Particle.prototype.applyForce = function(force) { this.acc.add(force);
};
Particle.prototype.follow = function(field) { var force = field.lookup(this.loc); var steer = Vector.mul(force, this.max).sub(this.vel).constrain(0.1); this.applyForce(steer);
};
Particle.prototype.seek = function(target, maxf) { var desired = Vector.sub(target, this.loc); desired.normalize().mul(this.max); var steer = Vector.sub(desired, this.vel).constrain(maxf); this.applyForce(steer);
};
Particle.prototype.move = function() { this.vel.add(this.acc).constrain(this.max); ctx.beginPath(); ctx.moveTo(this.loc.x, this.loc.y); this.loc.add(this.vel); ctx.lineTo(this.loc.x, this.loc.y); ctx.strokeStyle = color(this.loc); ctx.stroke(); this.acc.zero();
};
function color(v) { var h = floor(360 * ((v.x / W) + (v.y / H))/2); var s = '50%'; var l = '33%'; return 'hsla('+h+','+s+','+l+',0.2)';
}
Particle.prototype.wrap = function() { var x = this.loc.x, y = this.loc.y; if (x < 0) this.loc.x = W; else if (x > W) this.loc.x = 0; if (y < 0) this.loc.y = H; else if (y > H) this.loc.y = 0; return this;
};
/*---------------------------------------------------------------------------*/
var P;
var particles;
var F;
var field;
function init() { P = W+H; particles = new Array(P); for (var i = 0; i < W; i++) { particles[i] = new Particle(vec(i, H/2), vec(0,0), DPR*4); } for (var i = 0; i < H; i++) { particles[W+i] = new Particle(vec(W/2, i), vec(0,0), DPR*4); } field = new FlowField(DPR*floor(min(W,H)/50));
}
function draw() { for (var i = 0; i < P; i++) { var p = particles[i]; p.wrap(); p.follow(field); p.move(); }
}
/*---------------------------------------------------------------------------*/
document.onclick = pause;
document.ondblclick = reset;
reset();
Colorful Wanderers - Script Codes
Colorful Wanderers - Script Codes
Home Page Home
Developer Satchmorun
Username satchmorun
Uploaded August 28, 2022
Rating 4.5
Size 3,142 Kb
Views 28,336
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