Fractal Spirograph

Developer
Anwesh Mishra
Size
2,501 Kb
Views
12,144
  1. Fractal Spirograph Previews
  2. Fractal Spirograph HTML Codes
  3. Fractal Spirograph CSS Codes
  4. Fractal Spirograph JS Codes

How do I make an fractal spirograph?

What is a fractal spirograph? How do you make a fractal spirograph? This script and codes were developed by Anwesh Mishra on 08 January 2023, Sunday.

Fractal Spirograph Previews
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Fractal Spirograph - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Fractal Spirograph</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="c1" width="500px" height="500px">
</canvas> <script src="js/index.js"></script>
</body>
</html>

Fractal Spirograph - Script Codes CSS Codes

#c1{ border:1px solid black;
}

Fractal Spirograph - Script Codes JS Codes

var canvas = document.getElementById('c1')
var context = canvas.getContext('2d')
var speed = 1,k = 5
var startRadius = 100,startX = 100,startY = 100
var circles = []
var spiroPathX = [],spiroPathY = []
var setDimensions = ()=>{ canvas.width = window.innerWidth/2 canvas.height = window.innerHeight startX = canvas.width/2 startY = canvas.height/2 startRadius = Math.min(canvas.width,canvas.height)/4 context = canvas.getContext('2d')
}
window.onresize = ()=>{ setDimensions()
}
class Circle { constructor(x,y,r,speed) { this.x = x this.y = y this.deg = 0 this.r = r this.speed = speed this.mDeg = 0 } setNeighbor(circle) { this.neighbor = circle } setMidPoint(x,y,mDeg) { this.mx = x this.my = y this.mDeg = mDeg } draw() { context.strokeStyle = 'green' context.save() context.translate(this.x,this.y) context.rotate(this.deg*Math.PI/180) context.beginPath() context.arc(0,0,this.r,0,2*Math.PI) context.stroke() if(this.neighbor!=undefined) { this.neighbor.draw() } context.restore() } updateMidPointOfNeighbor() { var neighbor = this.neighbor if(neighbor!=undefined) { if(neighbor.neighbor!=undefined) { neighbor.setMidPoint(this.mx+(neighbor.r+this.r)*Math.cos((this.mDeg+this.deg-90)*Math.PI/180),this.my+(neighbor.r+this.r)*Math.sin((this.mDeg+this.deg-90)*Math.PI/180),this.mDeg+this.deg) } else { neighbor.setMidPoint(this.mx+(2*neighbor.r+this.r)*Math.cos((this.mDeg+this.deg-90)*Math.PI/180),this.my+(2*neighbor.r+this.r)*Math.sin((this.mDeg+this.deg-90)*Math.PI/180),this.mDeg+this.deg) } } } rotate() { this.deg += this.speed }
}
var initCircles = ()=>{ for(var i=0;i<10;i++) { var dir = i%2==0 ?-1:1 circles.push(new Circle(startX,startY,startRadius,speed*dir)) startX = 0 startY = -startRadius startRadius/=(7/2) startY -=startRadius speed*=k } circles[0].setMidPoint(canvas.width/2,canvas.height/2,0) for(var i=9;i>=1 ;i--) { circles[i-1].setNeighbor(circles[i]) } updateSpiroPath()
}
var updateSpiroPath = ()=>{ circles.forEach((circle)=>{ circle.updateMidPointOfNeighbor() }) if(circles.length>2) { var circle = circles[circles.length-1] spiroPathX.push(circle.mx) spiroPathY.push(circle.my) }
}
setDimensions()
initCircles()
var render = ()=>{ context.clearRect(0,0,canvas.width,canvas.height) context.lineCap="round" if(circles.length>0) { circles[0].draw() pathX = circles[0] } circles.forEach((circle)=>{ circle.rotate() }) updateSpiroPath() context.strokeStyle="red" context.beginPath() for(var i=0;i<spiroPathX.length;i++) { var x = spiroPathX[i],y = spiroPathY[i] if(i == 0) { context.moveTo(x,y) } else { context.lineTo(x,y) } } context.stroke() if(circles.length>0 && Math.abs(circles[0].deg)>=360) { console.log("clear") clearInterval(interval) }
}
var interval = setInterval(render,30)
Fractal Spirograph - Script Codes
Fractal Spirograph - Script Codes
Home Page Home
Developer Anwesh Mishra
Username Anwesh43
Uploaded January 08, 2023
Rating 3
Size 2,501 Kb
Views 12,144
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