Christian - Développeur UNITY 3D

PROFESSIONAL EXPERIENCE

Since 2016
Rôle : Architect / Technical leader
Project: Advanced
Remote Assistance Project Description : Advanced Remote Assistance Application

Technical Environment: 3D, augmented reality, audio/video streaming. Multi-plateform (iOS, Android, Hololens, Windows, Realwear, WebGL)

3DEngine
Unity3D version 2018/2020

Server hosting
Azure Windows/Linux Vms
Azure Kubernetes Services

Augmented reality:
Spatial Mapping hololens
ArCore / ArKit
Vuforia

Telecom
Webrtc C++ API (M71, M73)
Signaling server (freeswitch 1.8 / 1.10)
Conference server (freeswitch)
Signaling SIP Client (resiprocate)

Devices:
Windows UWP (Hololens, Hololens2)
Windows 10 (Exe)
Android (tablet, realwear)
iOS
WebGL (Chrome, Firefox)

Other Devices:
Double2 telepresence robot
PTZ Cameras (Pelco)


Mission Description
Unity3D client application
- Components oriented architecture: Definition of interfaces and interactions between components of the application. (C#)
- Integrate dependency injection framework (zenject)
- MVVM (model view / view model) as MVC pattern.
- Multiplatform streaming pipeline (H264, VP8, Opus). Convert YUV to RGB using shaders or a native rendering plugin (based on libyuv). Integration of webrtc as a native plugin (c++ version M71/M73)
- Deployment of unity application on a Robot. (Double2, ios native objective-c plugin)
- Deployment of unity application connected to IP Onvif Cameras (native c++ plugin)
- Integration of Augmented Reality technologies (ArCore, ArKit, study of visionlib)

3D models format pipeline conversion on cloud
- 3D models conversion pipeline (from Step to Fbx using open cascade api, then import in unity).
- Asset bundle packaging of 3D models as a result of the conversion pipeline.
- Runtime : Download and instanciate AssetBundle on client Scene.

Multiplayer data synchronisation server :
- Define network commands and data in json format:
Streaming commands (synchronisation of streaming state)
Model3D commands (synchronisation of 3D scene)
Annotation commands (syncronisation of annotations)
Device commands (Remote command of Robot, Camera PTZ)
- deployment on VM: C# Rest API (IIS) scheduler for managing gaming servers.
- Migration from docker containers to kubernates : Study of using kubernetes for agnostic deployments (on-premise or cloud).
- State of the art on different multiplayer server frameworks and apis (smartfox, nakama, colyseus, unet, …)

SIP/conference servers :
- VM Deployment of Signaling and Conference servers (freeswitch)
- Migration from VM to docker : Deploy freeswitch on docker containers.

Azure cloud :
- VM creation, Network Security Groups, Firewall configuration.
- Installation of backend based on docker containers and installation shell scripts.
- Study migration of backend deployment on kubernetes

CI/CD
- Continuous integration: Setup Unity application build pipeline for Android, iOS, exe and web platforms
- Continuous integration: Setup c++ build pipeline for Android, exe libraries (Cmake, android build tools)

Technical Management
- Git process definition : Rebase, Pull Requests.
- Branches management (feature, hotfix and release branches)

2015
Rôle Technical leader
Airbus : 3D GIS for Avionics Project Name : Mission+
Project Description: 3D GIS avionics application on tablet (SP4 and IOS)

Technical Environment:
Target Platforms : Windows 8, iOS
Technologies C++ 11 QT/Qml 5.9
OSGEarth 2.8 OSG 3.4.0 Spatialite 4.3.0
GDAL 2.2
SQlite 3.1.5
Geos 3.6.1
Boost 1.5.1

Mission Description
Continuous integration
- CMAKE.builds on server side (Jenkins)
- Unit tests (QTest)
- Integration tests, automatically run on Jenkins (nightly build)

Technical Management
- Git process definition : Merge, Pull Requests.
- Branches management (feature, hotfix and release branches)

CI/CD
- Compilation of libraries (sqlite, gdal, osg, osg earth and all its dependencies) : Total of 23 libraries.
- Cmake configuration for iOS, Windows x64 and x86.
- Builds automation : Superbuild (sh for ios), bat for windows.
- Study of a migration to Conan build system

3D Engine:
- Camera Moving functions (mouse move or smooth teleport using lerp)
- Dynamic geometry modifications according to Altitude
- Dynamic Items (text, icons) instanciation/displacement on a Map.
- New Layer in application : GTopo 30 terrain altitude data

Client
- Organisation of application by components. Interfaces description.
- Components are QT Plugins (QT DLL)
- Connections between components are done with Signal / Slot mechanism
- Conception, Design and development of the Vertical Display component.
- Javascript / QML Views.

Migration Databse SIG : from PostGis to spatialite
- Compilation of libraries and dependencies for spatialite.
- GDal ogr2ogr to convert from PostGIS to Spatialite
- Queries Migration : from PostGis to Spatialite.
- Patch of GDal library that did not manage features on Dynamo context.

GPS :
- IOS : Use of plugin QT Positioning
- Windows : recompilation of QT Positioning plugin to modify Baud Rate on SerialPort NMEA.