@geogirafe/lib-geoportal/tools/geoconsts.js

GeoGirafe is a flexible application to build online geoportals.

import { METERS_PER_UNIT as ol_METERS_PER_UNIT } from 'ol/proj';
class GeoConsts {
}
/** When circles needs to be rendered as polygon of N sides. */
Object.defineProperty(GeoConsts, "CIRCLE_TO_POLYGON_SIDES", {
    enumerable: true,
    configurable: true,
    writable: true,
    value: 64
});
Object.defineProperty(GeoConsts, "INCHES_PER_METER", {
    enumerable: true,
    configurable: true,
    writable: true,
    value: 39.37
});
// TODO REG : Is this correct ?
// It seems that the this should be correct for WMS created from MapSever,
// but not from GeoServer for example, which is generating tile at 90 dpi.
// Is there an OGC standard output resolution ?
// Should we read the DPI from the WMS-Server configuration ?
Object.defineProperty(GeoConsts, "PRINT_DOTS_PER_INCH", {
    enumerable: true,
    configurable: true,
    writable: true,
    value: 72
});
// TODO REG : Is this correct ?
// shouldn't we read this information from the current display? (desktop, mobile, ...)
// https://www.infobyip.com/detectmonitordpi.php
Object.defineProperty(GeoConsts, "SCREEN_DOTS_PER_INCH", {
    enumerable: true,
    configurable: true,
    writable: true,
    value: 96
});
Object.defineProperty(GeoConsts, "METERS_PER_UNIT", {
    enumerable: true,
    configurable: true,
    writable: true,
    value: ol_METERS_PER_UNIT
});
export default GeoConsts;