function buildEuropeProjection(scale) {
let _projectionMode = d3.geoConicConformal();
if (mapProjection==="Azimuthale") _projectionMode = d3.geoOrthographic().scale(scale * 1.2).center([0, 52]);
if (mapProjection==="Conique") _projectionMode = d3.geoConicConformal().parallels([32, 65]).scale(scale * 1).center([0,55]);
if (mapProjection==="Cylindrique") _projectionMode = d3.geoMercator().scale(scale * 0.55).center([0, 58]);
if (mapProjection==="Equal Earth") _projectionMode = d3.geoEqualEarth().scale(scale * 1.2).center([-7, 52]);
return _projectionMode;
}