Vectorizing the mobile version

In the next example, called ch08_styling, we improve our touch device version with another vector layer and some styling. We display the current position of the user and the accuracy of the position in meters, and style the geocaches based on the height difference of our position and the caches. Firstly, we create a layer containing our position and give it a static style:

if (ol.has.TOUCH) { […] var positionLyr = new ol.layer.Vector({ source: new ol.source.Vector(), style: new ol.style.Style({ image: new ol.style.Circle({ fill: new ol.style.Fill({ color: [255, 255, 255, 1] }), stroke: new ol.style.Stroke({ color: [0, 0, 0, 1], width: 2 }), radius: 6 }), stroke: new ol.style.Stroke({ color: [255, 0, 0, 1], width: ...

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