Untitled

                let LineCount = [12,12*5,12*5*60]
                let LineSize = [4,8,16]
                for (let c = 0; c < 3; c++) {
                    let angle = 2 * Math.PI / LineCount[c];
                    for (let ik = 0; ik < LineCount[c]; ik++) {
                        let x = 450 + 1 * Math.cos(ik * angle);
                        let y = 450 + 1 * Math.sin(ik * angle);
                        ctx.moveTo(x/LineSize[c], y/LineSize[c])
                        ctx.strokeStyle = "rgb(0,200,0)"
                        ctx.lineWidth= 2;
                        ctx.beginPath();
                        ctx.moveTo(x,y)
                        ctx.stroke()
                        ctx.moveTo(0,0)
                    }
                }