openmobilemaps/maps-core
Nov 2024 – Jul 2025
2 Months active
Languages Used
C++Kotlin
Technical Skills
Algorithm DesignC++ConcurrencyConcurrency ControlGraphics ProgrammingMap Rendering
Simon Roesch
PROFILE
Simon Roesch
During their work on the openmobilemaps/maps-core repository, Roesch focused on enhancing map rendering performance and stability, particularly under concurrent workloads. They implemented prioritized, parallel tile loading using C++ and OpenGL, which reduced initial render times by capping concurrent loads and weighting visible tiles. Roesch also addressed concurrency issues by introducing thread-safety measures, such as mutex locks in polygon rendering and refactoring Android touch event handling with Kotlin coroutines to prevent race conditions. Their contributions improved reliability in dynamic map scenes and stabilized gesture recognition, demonstrating depth in algorithm design, concurrency control, and performance optimization within complex, multi-threaded environments.
Overall Statistics
Feature vs Bugs
25%Features
Repository Contributions
5Total
Bugs
3
Commits
5
Features
1
Lines of code
100
Activity Months2
Your Network
31 people
Work History
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary: Delivered a critical Android touch event concurrency bug fix for openmobilemaps/maps-core, improving stability and gesture reliability in the Android maps experience. Refactored touch event processing to dispatch within a coroutine scope to prevent concurrent reads during overlapping operations. This work reduces user-visible glitches and supports upcoming performance enhancements.
1 Commits
Jul 1, 2025July 2025 monthly summary: Delivered a critical Android touch event concurrency bug fix for openmobilemaps/maps-core, improving stability and gesture reliability in the Android maps experience. Refactored touch event processing to dispatch within a coroutine scope to prevent concurrent reads during overlapping operations. This work reduces user-visible glitches and supports upcoming performance enhancements.
July 2025
November 2024
4 Commits • 1 Features
Nov 1, 2024OpenMobileMaps maps-core - November 2024: Focused on improving map rendering performance, stability, and concurrency under real-world usage. Delivered prioritized, parallel tile loading for faster initial render; stabilized mailbox hashing; and hardened polygon rendering with thread-safety measures. These changes reduce first-paint time, improve reliability in dynamic scenes (including time-travel loading), and strengthen rendering robustness under multi-threaded workloads.
November 2024
4 Commits • 1 Features
Nov 1, 2024OpenMobileMaps maps-core - November 2024: Focused on improving map rendering performance, stability, and concurrency under real-world usage. Delivered prioritized, parallel tile loading for faster initial render; stabilized mailbox hashing; and hardened polygon rendering with thread-safety measures. These changes reduce first-paint time, improve reliability in dynamic scenes (including time-travel loading), and strengthen rendering robustness under multi-threaded workloads.
Activity
Loading activity data...
Quality Metrics
Correctness80.0%
Maintainability80.0%
Architecture76.0%
Performance68.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++Kotlin
Technical Skills
Algorithm DesignAndroid DevelopmentC++ConcurrencyConcurrency ControlGraphics ProgrammingMap RenderingMobile DevelopmentOpenGLPerformance OptimizationSoftware Engineering
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline