[x3d-public] [FreeWRL-develop] web3d MMO > Sensor sharing via DIS

Wed Dec 20 16:11:10 PST 2023

I watched the video.  Perhaps the cone got trapped in the elevator doorway?

John

On Wed, Dec 20, 2023 at 11:41 AM Christoph Valentin via x3d-public <
x3d-public at web3d.org> wrote:

> Doug,
>
> I have started with first tests of your elevator3.x3d example.
>
> Am now going to analyse the results.
>
> Here's a preliminary demo video:
> https://lc-soc-lc.at/owncloud/index.php/s/FQCi7ix1yUGHIUF
>
> Cloud Password for the video: HalloWelt
>
> Have a nice holiday season
> Christoph
>
>
>
>
> Gesendet: Sonntag, 17. Dezember 2023 um 16:33 Uhr
> Von: "Christoph Valentin via FreeWRL-develop" <
> freewrl-develop at lists.sourceforge.net>
> An: "GPU Group" <gpugroup at gmail.com>
> Cc: "Christoph Valentin" <christoph.valentin at gmx.at>, r.onic at kabsi.at,
> "Kevin" <klw71 at yahoo.com>, "Development for the FreeWRL X3D viewer." <
> freewrl-develop at lists.sourceforge.net>
> Betreff: Re: [FreeWRL-develop] [x3d-public] web3d MMO > Sensor sharing via
> DIS
>
> Doug,
>
> Thank you for the information and for the suggestions.
>
> You can follow my project at our association's home page:
> https://lc-soc-lc.or.at/project-003-dexper/index.html
>
>
> Today I entered following status:
>
>
> 2023-12-17: started to analyse X3D v3.3 (ISO/IEC IS 19775-1:2013) -
> chapter 28 (DIS)2023-12-17: started to analyse elevator example from Doug S.
>
> Have a nice holiday season,
>
> Kr,
> Christoph
>
> Gesendet: Sonntag, 17. Dezember 2023 um 15:39 Uhr
> Von: "GPU Group" <gpugroup at gmail.com>
> An: "Christoph Valentin" <christoph.valentin at gmx.at>
> Cc: "Kevin" <klw71 at yahoo.com>, "Development for the FreeWRL X3D viewer." <
> freewrl-develop at lists.sourceforge.net>, r.onic at kabsi.at
> Betreff: Re: Re: [x3d-public] web3d MMO > Sensor sharing via DIS
>
> Christoph,As long as using the same app for all communications, it's up to
> the app to choose a comment 'channel' number. I don't remember the exact
> terminology, but it seemed like there were plenty of channels, so an app
> can take one for its own purpose as long as no other app is using it in the
> same simulation. So it's not something the app user would need to worry
> about when using the same app for all instances. It's just when wanting to
> communicate between different apps, then app developers need to be
> coordinated on their use of channels.
> -Doug
> PS mor things that could be done on the topic:
> 1. humanoid avatars. I used cones to represent the pose of avatars
> 2. automated gait - automatically change standing/walking-pace/running
> motion of humanoid avatars based on speed of navigation - so as you
> navigate in your app, the other apps see your humanoid avatar
> walking/running fast enough to make sense for your speed
> 3. inverse kinematics - as you mouse over a sensor to click, an arm would
> rise to point in the direction of the pointer, so other users can see you
> clicking
> 4. conveyor-belt test - I did an elevator test in freewrl, but a conveyor
> test is harder, for example if your avatar gets in a vehicle that moves,
> does your avatar stay with the vehicle? I worked on something like it 15
> years ago and found it a hard problem at that time and haven't tried it
> since
>
> On Sat, Dec 16, 2023 at 4:03 PM Christoph Valentin <
> christoph.valentin at gmx.at[mailto:christoph.valentin at gmx.at]> wrote:Hi
> Doug,
>
> May I ask a "silly question"?
>
> You write "[...]it broadcasts sensor events to other app instances via DIS
> CommentPdu[...]",
>
> where is this documented? I did not find anything in X3D v3.3 standard
> about CommentPdu.
>
> Would like to try it out during holiday season.
>
> Thanks
> Christoph
>
>
> Gesendet: Samstag, 17. Juni 2023 um 23:30 Uhr
> Von: "GPU Group" <gpugroup at gmail.com[mailto:gpugroup at gmail.com]>
> An: "Christoph Valentin" <christoph.valentin at gmx.at[mailto:
> christoph.valentin at gmx.at]>
> Cc: "X3D Graphics public mailing list" <x3d-public at web3d.org[mailto:
> x3d-public at web3d.org]>, "Kevin" <klw71 at yahoo.com[mailto:klw71 at yahoo.com]>,
> "Roman Onic" <roman.onic at kontron.com[mailto:roman.onic at kontron.com]>
> Betreff: Re: [x3d-public] web3d MMO > Sensor sharing via DIS
>
> Thanks Christoph. Hold on though -- I need to publish the current version
> of freewrl, could be a few weeks before I post .msi for windows.
> -Doug
>
> On Sat, Jun 17, 2023 at 4:27 PM Christoph Valentin <
> christoph.valentin at gmx.at[mailto:christoph.valentin at gmx.at][mailto:
> christoph.valentin at gmx.at[mailto:christoph.valentin at gmx.at]]> wrote:
>
> Doug,
>
> This sounds really interesting.
>
> I hope I will find some time to try it soon.
>
> Will let you know my comments.
>
> Kr,
> CP/V
> --
> Diese Nachricht wurde von meinem Android Mobiltelefon mit GMX Mail
> gesendet.
>
> Am 18.06.23, 00:12 schrieb GPU Group <gpugroup at gmail.com[mailto:
> gpugroup at gmail.com][mailto:gpugroup at gmail.com[mailto:gpugroup at gmail.com
> ]]>:
>
>
> MMO - massively multiplayer online
> DIS distributed interactive simulation - a web3d component 28
> CONCEPT: web3d browsers load identical scenes, and share sensor events,
> and each instance does its own routing diagram after sensor event is shared.
>
> https://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/MMO_Sensor_sharing.mp4[https://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/MMO_Sensor_sharing.mp4][https://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/MMO_Sensor_sharing.mp4%5Bhttps://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/MMO_Sensor_sharing.mp4%5D]
> <https://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/MMO_Sensor_sharing.mp4%5Bhttps://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/MMO_Sensor_sharing.mp4%5D%5Bhttps://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/MMO_Sensor_sharing.mp4%5Bhttps://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/MMO_Sensor_sharing.mp4%5D%5D>
>
> - 2 instances of freewrl with DIS activated, showing same elevator3.x3d
> scene
>
> https://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/[https://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/][https://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/%5Bhttps://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/%5D]
> <https://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/%5Bhttps://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/%5D%5Bhttps://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/%5Bhttps://freewrl.sourceforge.io/tests/28_Distributed_interactive_simulation/elevator/%5D%5D>
> - in video we can see avatar of other instance as green cone
> - when current scene clicks elevator up button, it relays that sensor
> click event to other app instance, which triggers the elevator in the other
> scene to go up at the same time
> - the avatar in the other scene rides its elevator up, and sends its new
> avatar pose to the current scene, so appears they are riding up elevator
> together.
> - the code sensor intercept point is general enough to capture
> TouchSensor, GeoTouchSensor, LineSensor, PointSensor (not web3d spec),
> PlaneSensor, MultiTouchSensor (not web3d spec), CylinderSensor,
> SphereSensor, ProximitySensor, GeoProximitySensor, Anchor.
> - it broadcasts sensor events to other app instances via DIS CommentPdu,
> which has variable number of variable-length records. All sensor hits on a
> frame are queued, and when processing dis send events, it reads the queue
> and packs into a single CommentPdu and broadcastes.
> - other app instances once per frame in dis_receive function parse the pdu
> stream, and direct all CommentPdus to the pdu2sensor function, which
> iterates over the CommentPdu variable records and calls the appropriate
> sensor functions for each sensor event.
> -Doug
>
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