4aiman
a52e998fb6
Analysis in docs/brouter-findings.md: how BRouter knows roads (.rd5 segments), routes and reaches low elevation gain (profile uphill/downhill cost + kinematics), the three call surfaces, and an evaluation of two ideas — fill GPS gaps along roads, and offline waypoint route planning. License is MIT; the engine has no desktop-only deps, so it embeds on Android ART. Stage 1 (embed + bridge, compiles into the apk; on-device route not yet run): - vendored brouter-1.6.3-all.jar into the Android module (dexes cleanly) and bundled the trekking/shortest profiles + lookups.dat as assets, copied to files/brouter/profiles2 on launch - MainActivity: a brouter_command.txt handler on the existing FileObserver runs btools.router.RoutingEngine off the UI thread (recipe taken via javap from ServerHandler) and returns the track as GPX - Rust brouter_route command: same file bridge as GPS (request + command, poll for the result), registered in the invoke handler - frontend/js/router.js: BRouter.route(points, profile) -> GPX (parseRouteGPX) - LICENSE-brouter (MIT notice) kept alongside the vendored engine Segments (.rd5, ~13-23 MB per 5x5 tile) are delivered later (Stage 2, wired download inside BalDav). IMPLEMENTATION_PLAN.md tracks the 5 stages.
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1.4 KiB
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30 lines
1.4 KiB
Text
BalDav embeds the BRouter routing engine (brouter-1.6.3-all.jar,
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src-tauri/gen/android/app/libs/) and its routing profiles
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(src-tauri/gen/android/app/src/main/assets/brouter/profiles2/).
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BRouter is a third-party component distributed under the MIT License.
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Source: https://github.com/abrensch/brouter
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---
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MIT License
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Copyright (c) 2019 BRouter contributors
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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