LineString and multiLine openlayer3 - openlayers-3

Question

I want to show lines on the map using ol.genom.lineString, my plan is in the future to implement 3 lines at the same time using multiLineString. My problem is that i cant figure out how the LineString should be implemented. this is where im at now:
http://jsfiddle.net/6RS2z/125/
(function(){
var map = new ol.Map({
layers: [new ol.layer.Tile({source: new ol.source.OSM()})],
target: document.getElementById('map'),
view: new ol.View({
center: [0, 0],
zoom: 1
})
});
var vectorSource = new ol.source.Vector({
//create empty vector
});
var plyFeature = new ol.Feature({
genometry : new ol.geom.LineString([0,0,18,60], 'EPSG:4326', 'EPSG:3857')
});
vectorSource.addFeature(plyFeature);
var plyLayer = new ol.layer.Vector({
source : vectorSource
})
map.addLayer(plyLayer);
})();

Answer 1

To create an ol.geom.LineString, you provide an array of points as first constructor argument:
var geom = new ol.geom.LineString([[0, 0], [18, 60]]);
To transform the geometry to the view projection, you do the following:
geom.transform('EPSG:4326', 'EPSG:3857');
When you create an ol.geom.MultiLineString, you provide an array of linestrings as first constructor argument:
var multigeom = new ol.geom.MultiLineString([
[[0, 0], [18, 60]],
[[18, 60], [9, 30]]
]);
Coordinate transforms work the same for all geometry types.