MaysWind
57 lines
2.3 KiB
TypeScript
57 lines
2.3 KiB
TypeScript
import {
|
|
type Coordinate,
|
|
CoordinateDisplayOrder,
|
|
CoordinateDisplayFormat,
|
|
CoordinateDirectionFormat,
|
|
CoordinateDisplayType,
|
|
getNormalizedCoordinate
|
|
} from '@/core/coordinate.ts';
|
|
|
|
export function formatCoordinate(value: Coordinate, coordinateDisplayType: number): string {
|
|
if (!value) {
|
|
return '';
|
|
}
|
|
|
|
value = getNormalizedCoordinate(value);
|
|
|
|
const displayType = CoordinateDisplayType.valueOf(coordinateDisplayType) || CoordinateDisplayType.Default;
|
|
const formattedLatitude = formatCoordinateValue(value.latitude, 'N', 'S', displayType.displayFormat, displayType.directionFormat);
|
|
const formattedLongitude = formatCoordinateValue(value.longitude, 'E', 'W', displayType.displayFormat, displayType.directionFormat);
|
|
|
|
if (displayType.displayOrder === CoordinateDisplayOrder.LatitudeLongitude) {
|
|
return `${formattedLatitude}, ${formattedLongitude}`;
|
|
} else if (displayType.displayOrder === CoordinateDisplayOrder.LongitudeLatitude) {
|
|
return `${formattedLongitude}, ${formattedLatitude}`;
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
function formatCoordinateValue(value: number, positiveDirectionName: string, negativeDirectionName: string, displayFormat: CoordinateDisplayFormat, directionFormat: CoordinateDirectionFormat): string {
|
|
let prefix = '';
|
|
let suffix = '';
|
|
|
|
if (directionFormat === CoordinateDirectionFormat.Signed) {
|
|
prefix = value >= 0 ? '' : '-';
|
|
} else if (directionFormat === CoordinateDirectionFormat.Directional) {
|
|
suffix = value >= 0 ? positiveDirectionName : negativeDirectionName;
|
|
}
|
|
|
|
value = Math.abs(value);
|
|
|
|
if (displayFormat === CoordinateDisplayFormat.DecimalDegrees) {
|
|
return `${prefix}${value.toFixed(6)}${suffix}`;
|
|
} else if (displayFormat === CoordinateDisplayFormat.DecimalMinutes) {
|
|
const degrees = Math.trunc(value);
|
|
const minutes = (value - degrees) * 60;
|
|
return `${prefix}${degrees}°${minutes.toFixed(5)}'${suffix}`;
|
|
} else if (displayFormat === CoordinateDisplayFormat.DegreesMinutesSeconds) {
|
|
const degrees = Math.trunc(value);
|
|
const minutes = Math.trunc((value - degrees) * 60);
|
|
const seconds = (value - degrees - minutes / 60) * 3600;
|
|
return `${prefix}${degrees}°${minutes}'${seconds.toFixed(4)}"${suffix}`;
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|