tethys-feature-service/node_modules/proj4/lib/adjust_axis.js

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2023-10-02 13:04:02 +00:00
export default function(crs, denorm, point) {
var xin = point.x,
yin = point.y,
zin = point.z || 0.0;
var v, t, i;
var out = {};
for (i = 0; i < 3; i++) {
if (denorm && i === 2 && point.z === undefined) {
continue;
}
if (i === 0) {
v = xin;
if ("ew".indexOf(crs.axis[i]) !== -1) {
t = 'x';
} else {
t = 'y';
}
}
else if (i === 1) {
v = yin;
if ("ns".indexOf(crs.axis[i]) !== -1) {
t = 'y';
} else {
t = 'x';
}
}
else {
v = zin;
t = 'z';
}
switch (crs.axis[i]) {
case 'e':
out[t] = v;
break;
case 'w':
out[t] = -v;
break;
case 'n':
out[t] = v;
break;
case 's':
out[t] = -v;
break;
case 'u':
if (point[t] !== undefined) {
out.z = v;
}
break;
case 'd':
if (point[t] !== undefined) {
out.z = -v;
}
break;
default:
//console.log("ERROR: unknow axis ("+crs.axis[i]+") - check definition of "+crs.projName);
return null;
}
}
return out;
}