[x3d-public] X3D meeting agenda 18 FEB 2022: SpotLight angles, Volume Rendering component

[vmarchetti at kshell.com]

If there is time after Mantis discussion, a possible topic is review the node inventory and browser review information for view3dscene:

view3dcene information review : 
https://drive.google.com/file/d/1Ka1lR9laQiMPitRQWj3HULU2CKHqPFKF/view?usp=sharing <https://drive.google.com/file/d/1Ka1lR9laQiMPitRQWj3HULU2CKHqPFKF/view?usp=sharing>

Node inventory : https://docs.google.com/spreadsheets/d/1jXu52t7_5kdQY8CtEJBM8oU6PxzwQz93/edit?usp=sharing&ouid=113910437446121064118&rtpof=true&sd=true <https://docs.google.com/spreadsheets/d/1jXu52t7_5kdQY8CtEJBM8oU6PxzwQz93/edit?usp=sharing&ouid=113910437446121064118&rtpof=true&sd=true>

(inventory based on the existing inventory: https://www.web3d.org/specifications/X3dNodeInventoryComparison.xlsx <https://www.web3d.org/specifications/X3dNodeInventoryComparison.xlsx>


Vince Marchetti


> On Feb 15, 2022, at 11:53 PM, Brutzman, Donald (Don) (CIV) <brutzman at nps.edu> wrote:
> 
> Regular Friday meeting 08-0900 Friday, call information below.
>  
> Videoconference Connectivity:
> https://us02web.zoom.us/j/81634670698?pwd=a1VPeU5tN01rc21Oa3hScUlHK0Rxdz09 <https://us02web.zoom.us/j/81634670698?pwd=a1VPeU5tN01rc21Oa3hScUlHK0Rxdz09>
> https://zoom.us/j/148206572 <https://zoom.us/j/148206572>  Password 483805 
> https://www.web3d.org/member/teleconference-information <https://www.web3d.org/member/teleconference-information>
>  
> Spiraling questions about SpotLight field relationships and default values, beamwidth and cutoffAngle
>  
> X3D4 Architecture, Lighting component, clause 17.4.4 SpotLight
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/lighting.html#SpotLight <https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/lighting.html#SpotLight>
>  
> excerpted
>  
> SpotLight : X3DLightNode {
>  
>   SFFloat [in,out] beamWidth        π/4      (0,π/2]
>  
>   SFFloat [in,out] cutOffAngle      π/2      (0,π/2]
> }
>  
> X3D4 Architecture, Lighting component, Figure 17.1 — SpotLight node
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/lighting.html#f-SpotLightnode <https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/lighting.html#f-SpotLightnode>
>  
> [x3d-public] Defaults of SpotLight.cutOffAngle, beamWidth changed (maybe by mistake) in X3D 3.3
> https://web3d.org/pipermail/x3d-public_web3d.org/2022-February/016744.html <https://web3d.org/pipermail/x3d-public_web3d.org/2022-February/016744.html>
>  
> Mantis 441: 17.4.3 SpotLight -- Default Values (resolved 2009)
> https://www.web3d.org/member-only/mantis/view.php?id=441 <https://www.web3d.org/member-only/mantis/view.php?id=441>
>  
> Michalis has agreed to walk us through this.  Goal outcomes for confirmation:
> is figure OK?
> Is relationship correct, typically beamWidth <= cutoffAngle
> Should we modify default values?
> Should we improve prose for clarity?
>  
> = = =
> Working on Mantis issues for Volume Rendering component
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/Architecture.html <https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/Architecture.html>
>  
> X3D4 Architecture, Volume rendering component
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/Architecture.html <https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/Architecture.html>
>  
> Nicholas and Michalis: please comment on following issues:
>  
> Mantis 917: Table 41.7 Volume rendering component support levels - ShadedVolumeStyle shadows support unclear
> https://www.web3d.org/member-only/mantis/view.php?id=917 <https://www.web3d.org/member-only/mantis/view.php?id=917>
>  
> and
>  
> Mantis 709: 41.4.4 ComposedVolumeStyle - Remove reference to ordered field
> https://www.web3d.org/member-only/mantis/view.php?id=709 <https://www.web3d.org/member-only/mantis/view.php?id=709>
>  
> Can we remove ‘ordered’ field from table?
>  
> = = =
>  
> Other topics of group interest… are always welcome.
> 
> Membership has value! Please consider joining Web3D Consortium.  
> https://www.web3D.org/join <https://www.web3d.org/join>
>  
> Thanks for all preparations and inputs.  Have fun with X3D!   8)
>  
> all the best, Don
> -- 
> Don Brutzman  Naval Postgraduate School, Code USW/Br        brutzman at nps.edu <mailto:brutzman at nps.edu>
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA    +1.831.656.2149
> X3D graphics, virtual worlds, Navy robotics https:// faculty.nps.edu/brutzman <http://faculty.nps.edu/brutzman>
>  
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