Angular Stuttgart ngStuttgart @ JW Fröhlich Max Schulte @MaxOSchulte Software Consultant /Developer Angular - BabylonJS Integration Deep Dive @ngStuttgart 

Angular - BabylonJS Integration Deep Dive Talk Good to know… Max Schulte [email protected] https://www.thinktecture.com/max-schulte @MaxOSchulte • Consultant and developer at Thinktecture AG. • Specialised in Angular and BabylonJS 

Angular - BabylonJS Integration Deep Dive Talk Forms Over Data 

http://build.aritcohomelifts.com/?ct1=0&sc=RAL9006&dc=RAL9006&f=bolon_gradient&dw=d esignwall_skyline&sgt=tinted&ch1=2225 3D-Engine https://www.aritcohomelifts.com 

Angular - BabylonJS Integration Deep Dive Talk Just some use cases • Real-time data visualization • “Hands-On” experience for customers • Understandable data for non experts • Preview (simulation results, objects, etc.) • Upselling • Immersive tutorials and help guides • … BabylonJS, 3D-Engine? 

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Angular - BabylonJS Integration Deep Dive Talk Just one of many possibilities Web-Native TypeScript 

Angular - BabylonJS Integration Deep Dive Talk • Open source project supported by Microsoft • Framework optimized for web • WebGL hardware acceleration • Complete 3D-Engine Alternatives: Playcanvas, A-Frame ( Non-Web: Unity, Unreal Engine ), Three.js BabylonJS 

Angular - BabylonJS Integration Deep Dive Talk • Matured Framework • Great community • Editor • Good learning curve • “Playground” • Official support MS-Docs example • Dedicated Microsoft team incl. the creator of BabylonJS BabylonJS 

Angular - BabylonJS Integration Deep Dive Talk BabylonJS Last Month 

Angular - BabylonJS Integration Deep Dive Talk Downloads per month BabylonJS https://npm-stat.com/charts.html?package=babylonjs&from=2018-01-31&to=2020-01-31 

Angular - BabylonJS Integration Deep Dive Talk Downloads per week BabylonJS https://npm-stat.com/charts.html?package=babylonjs&from=2018-01-31&to=2020-01-31 ? 

Angular - BabylonJS Integration Deep Dive Talk Can I Use - WebGL v2 01.02.2020 • CAN I USE SCREENSHOT + DATE BabylonJS https://caniuse.com/#feat=webgl2 

Angular - BabylonJS Integration Deep Dive Talk Can I Use - WebGL v1 01.02.2020 • CAN I USE SCREENSHOT + DATE BabylonJS https://caniuse.com/#feat=webgl 

Angular - BabylonJS Integration Deep Dive Talk An app that … • combines Angular and BabylonJS • is interactive • works on different platforms and devices • uses native hardware (WebGL) https://github.com/thinktecture/angular- babylonjs-architecture DEMO Demo Example App Try now! http://tiny.cc/ngb-js 

Angular - BabylonJS Integration Deep Dive Talk Clarifying keywords • GameObject (TransformNode) à Logical objects • Can hold visual objects and much more • The root of all possible things • Mesh à Visual objects • Scene (Stage) à holds information • Engine à renders the Scene BabylonJS Babylonjs.com 

Angular - BabylonJS Integration Deep Dive Talk How changes happen • Iterations (loop, render loop) • Fixed steps relative to each frame • Setup everything then modify something • Step by step, no reordering etc. BabylonJS 

Angular - BabylonJS Integration Deep Dive Talk Playground example https://www.babylonjs-playground.com/#TAZ2CB BabylonJS 

Angular - BabylonJS Integration Deep Dive Talk Application Angular Components Context Service BabylonJS Scene Engine Objects HTML Rendering Engine feed instructions update model HTML APIs render 3D content WebGL (WebGPU) OS API Hardware View render HTML trigger function Architecture Overview (simplified) 

Angular - BabylonJS Integration Deep Dive Talk BabylonJS - Angular Angular • UI • Application lifecycle • Dependency injection • NgZone (ZoneJS) • Service, Context Integration BabylonJS • 3D • Engine lifecycle • Scene graph • Event-based system • Render loop 

Angular - BabylonJS Integration Deep Dive Talk Render Loop • Fast iterating • One image (or frame) each iteration • Static execution order (lifecycle dependent) • 60 frames per second (FPS) desired BabylonJS 

Angular - BabylonJS Integration Deep Dive Talk Lifecycle • Different steps executed by the render loop • Static execution order • Move from “manipulate it now” to “I instruct you to manipulate it at the correct time” mindset • see: Angular’s changeDetectorRef.markForCheck • Syncs the “state” with the “view” (physics not included) BabylonJS 

Angular - BabylonJS Integration Deep Dive Talk Two Different Lifecycles Angular • DOM • Event Integration BabylonJS • Loop à e.g. dispose on next iteration • Different timings can cause synchronization problems à Lifecycles should be separated à No dependency from BabylonJS to the Angular lifecycle / change detection cycle à “Add box to scene” becomes “Add box on next iteration” 

Angular - BabylonJS Integration Deep Dive Talk Change Detection Angular • NgZone (ZoneJS) • Checks on every event Integration BabylonJS • Event-based communication • Events on every frame (60 FPS!) • Exclude BabylonJS from the NgZone à ngZone.runOutsideAngular( … ); 

Angular - BabylonJS Integration Deep Dive Talk Clear responsibilities • Factory • Lifecycle hooks • Naming • Extend existing BabylonJS classes • Scene • Mesh • Don’t mix (a mesh must not be a component) My integration key points 

Angular - BabylonJS Integration Deep Dive Talk Dependency Injection • Provide access to context • Don’t mangle with providing all necessary dependencies (chains) • Re-Use Angular (or other’s) tools • Key to integrate Angular and BabylonJS Factory 

Angular - BabylonJS Integration Deep Dive Talk Factory Creator Module Injector Scene Create factory multi token Get child factory injector /w dep. Add engine object Get new engine object instance Creator = services, components, game objects … Angular Architecture Overview (Factory) 

Angular - BabylonJS Integration Deep Dive Talk Composition over Inheritance • Change “behavior” of a Base • Flat hierarchy • Reusable and extendable • Code example: BoxSlot, StackSlot and Ground Design Concept for Engine Objects 

Angular - BabylonJS Integration Deep Dive Talk Composition over Inheritance – the BlueLightStack problem Architecture Space Item Stack Lights Blue Red content rows move on/off blue red BlueLightStack ? A blue light does not move 

Angular - BabylonJS Integration Deep Dive Talk Composition over Inheritance – the BlueLightStack composition Architecture BlueLightStack Rows Move On/off Stack Space BlueLight Item Blue ? … 

Angular - BabylonJS Integration Deep Dive Talk Composition over Inheritance – the BlueLightStack composition Architecture BlueLightStack Rows Move On/off Blue 

Angular - BabylonJS Integration Deep Dive Talk CODE 

Angular - BabylonJS Integration Deep Dive Talk Level of immersiveness 3D AR VR Sweet spot Nintendo Oculus Rift S 

Summary Try now! http://tiny.cc/ngb-js 1. Extend your data visualization 2. 3D integration is different 3. On your everyday devices [email protected] https://www.thinktecture.com/max-schulte @MaxOSchulte