OTKGlobeEngine 0.1.1

Renamed

• The project is now OTKGlobeEngine (formerly OpenTAKEngine). The repositories are github.com/grangedevgroup-code/OTKGlobeEngine and gitlab.com/grangedevgroup/OTKGlobeEngine, and the website is https://grangedevgroup-code.github.io/OTKGlobeEngine/.
• The code prefix follows the name: namespace otk, C ABI otk_* in otk/otk.h, headers under include/otk, CMake options and environment variables OTK_*, libraries otkglobeengine and otkglobeengine_c, CMake package OTKGlobeEngine, pkg-config otkglobeengine, Android package com.otkglobeengine, .NET package and namespace OTKGlobeEngine, Swift OTKGlobeView with module OTKGlobeEngineC.
• An existing tile cache moves to the new cache directory on first use. CoT and GML files written by 0.1.0 still import with their attributes.

Kernel and engine

• The GPU-free kernel (otk_kernel) is a separate library: formats, import planning (planImport), feature queries (FeatureQuery), elevation queries, line of sight and profiles (ElevationService), coordinates, geodesy, magnetic model, geoid, sun and moon, 2525 symbol images, tile archives, cache and network. -DOTK_ENGINE=OFF builds the kernel alone with no graphics dependencies.
• Engine::open loads any file or folder planImport understands. loadData returns the features, overlays and models a file added with their extent, and featuresRegion, tilesetRegion, pointCloudRegion and viewForRegion zoom to content (C ABI otk_open, otk_view_for_region, otk_load_features_region, otk_tileset_region, otk_point_cloud_region).
• Engine::queryFeatures and elevationLayers.

Compatibility

• Request headers on imagery and elevation layers; Cesium, MapLibre and Leaflet URL placeholders ({reverseY}, {westDegrees}, {bbox-epsg-3857}, {quadkey}, {r} and more).
• Cesium terrain from layer.json, Cesium ion and local terrain folders; quantized-mesh and heightmap tiles, tile availability and extents.
• RMaps/BigPlanet and OsmAnd SQLite archives; PMTiles detected by content.
• KML NetworkLink with view-based refresh and HTTP, Model (COLLADA, OBJ, glTF), extrude, remote icons.
• OBJ/MTL and COLLADA models.
• ATAK iconsets and usericon, range-and-bearing lines, dashed and dotted strokes.
• Shapefiles reprojected from their .prj (UTM and other Transverse Mercator, State Plane, Albers, Mercator, Web Mercator).
• .gltf files are no longer detected as GeoJSON.

Viewer

• Files and folders open when dropped on the window or passed as arguments, and the view flies to them.

Platforms and packages

• Raspberry Pi 4 and 5: OpenGL ES 3 build (-DOTK_GLES=ON) and raspberrypi-arm64 packages.

Website

• Charcoal theme; the documentation, changelog, security policy and license open on the website.

OpenTAKEngine 0.1.0

First release.

Engine

• WGS84 globe with imagery tile pyramids (XYZ, TMS, WMS, WMTS, MBTiles, GeoPackage, osmdroid, MOBAC, GDAL), vector tiles, terrain from Terrarium, quantized-mesh, DTED, SRTM and GDAL DEMs with an EGM96 geoid, 2D and 3D modes, first person, terrain exaggeration and x-ray.
• Continuous, zero-blank rendering with screen-space-error LOD, prefetching, retained subtrees and per-frame work budgets; GPU memory budget from VRAM.
• Features from KML/KMZ, GeoJSON, GPX, Shapefile, CSV, WKT, GML, CoT and TAK data packages, with exporters; labels with decluttering, hit testing.
• glTF models with metallic-roughness materials, normal, emissive and occlusion maps, unlit materials, GPU instancing and sun lighting by time.
• OGC 3D Tiles 1.0/1.1: explicit and implicit tilesets, b3dm, i3dm, pnts, cmpt and glTF content, Draco, meshopt and KTX2 compression, .3tz archives, Google Photorealistic 3D Tiles and Cesium ion with credits; LAS point clouds.
• VR and AR hosts: multi-view rendering for OpenXR eye poses with one tile update per frame, table-top scale, side-by-side stereo.
• Offline and airgapped operation: persistent cache with stale-while-revalidate, unreachable-host detection, pinned region downloads, MBTiles/GeoPackage export and import, embedded world backdrop.

Military

• MIL-STD-2525C/D symbols, CoT symbolization, MGRS/UTM/UPS/GARS/DMS coordinates, WMM2025 declination, NATO mils, grids, range rings, bullseye, range and bearing.
• Line of sight, viewshed, profiles, contours and slope shading.
• Sun and moon position, moon phase, twilight times (BMNT/EENT), moonrise/moonset and ground illuminance for night-vision planning.
• MISB ST 0601 KLV from MPEG-TS: sensor and frame-centre tracks, footprints and line of sight.

Platforms and packages

• Windows, Linux, macOS, iOS, Android, FreeBSD, OpenBSD and NetBSD.
• C ABI (ote.h) as a shared library with CMake package config and pkg-config; .NET (NuGet), Android (AAR), Apple (XCFramework) and Swift bindings.
• Apache License 2.0.