WorldWind Kotlin/earth.worldwind.globe.geoid/AbstractEGM96Geoid

AbstractEGM96Geoid

abstract class AbstractEGM96Geoid(offsetsFile: AssetResource, scope: CoroutineScope) : Geoid

Computes EGM96 geoid offsets.

A file with the offset grid must be passed to the constructor. This file must have 721 rows of 1440 2-byte integer values. Each row corresponding to a latitude, with the first row corresponding to +90 degrees (90 North). The integer values must be in centimeters.

Parameters

offsetsFile

a resource pointing to a file with the geoid offsets. See the class description above for a description of the file.

Inheritors

EGM96Geoid

Constructors

AbstractEGM96Geoid

constructor(offsetsFile: AssetResource, scope: CoroutineScope)

Types

Companion

object Companion

Properties

displayName

open override val displayName: String

This Gravitational Model display name.

Functions

awaitDataLoaded

suspend fun awaitDataLoaded()

Suspend until the offsets grid is resident (requesting the load if needed), so callers that bake offsets into long-lived data never read the 0 fallback getOffset returns while loading.

ensureDataLoaded

fun ensureDataLoaded()

Request data load once

getOffset

open override fun getOffset(latitude: Angle, longitude: Angle): Float

Calculates Gravitational Model offset at specified location

release

open fun release()

Release loaded data to free memory