Line Geometry back then and now

Questions
1

Hi,

I found a code snippet distributing lines around a sphere. Unlucky me, it is written “so much past” newer versions so → Geometry and line generation is outdated. Can anyone help me to understand and update:

			var pointsOnSphere = function (n) {

				var upts = new Array();
				var inc = Math.PI * (3 - Math.sqrt(5));
				var off = 2.0 / n;
				var x, y, z;
				var r;
				var phi;
			   
				for (var k = 0; k < n; k++){
					y = k * off - 1 + (off /2);
					r = Math.sqrt(1 - y * y);
					phi = k * inc;
					x = Math.cos(phi) * r;
					z = Math.sin(phi) * r;

					upts.push(new THREE.Vector3(x, y, z));

				}

				return upts;

			}

				var lineGeo = new THREE.Geometry();
				var radius = 40;

				var lngArray = [];
				var seedArray = [];
				var colorArray = [];
				var drawArray = [];

				var numOfPoints = 105000;

				var points = pointsOnSphere(numOfPoints);

				for (var i = 0; i < numOfPoints; i++) {
					var num = 5+Math.floor(Math.random()*2);
					
					var base = points[i];
					base.multiplyScalar( radius );
					var seed = Math.random();

					var lat = 90 - (Math.acos(-base.y / radius)) * 180 / Math.PI;
					var lon = ((270 + (Math.atan2(-base.x , -base.z)) * 180 / Math.PI) % 360) -180;

					for (var j = 0; j < num; j++) {
						var vertex = new THREE.Vector3().copy(base);
						var lng = radius+(j*3.0);
						var color = new THREE.Color(0xffffff);
						var black = (j/num)+0.2;
						color.setRGB(1.0, 1.0, 0.0);

						vertex.setLength( lng );
						lineGeo.vertices.push( vertex );
						colorArray.push( color );
						seedArray.push( seed );
						lngArray.push( lng );
						if (j == num-1 || j == 0) {
							drawArray.push( 0 );
						} else {
							drawArray.push( 1 );
						}
						
					}

				}


				var vertices = lineGeo.vertices;
				var values_color = attributes.customColor.value;
				var values_lng = attributes.lng.value;
				var values_seed = attributes.seed.value;
				var values_draw = attributes.draw.value;

				for( var v = 0; v < vertices.length; v++ ) {
					
					values_lng[ v ] = lngArray[v];
					values_seed[ v ] = seedArray[v];
					values_draw[ v ] = drawArray[v];
					values_color[ v ] = colorArray[v];

				}

				lines = new THREE.Line( lineGeo, shaderMaterial, THREE.LineStrip );

Many many thanks