[x3d-public] Viewpoint (clipBoundary); missing from X3DUOM view on iPhone via google drive
Don Brutzman
don.brutzman at gmail.com
Sun Jan 4 17:39:00 PST 2026
Super, thanks everyone. I always check headers and meta information.
Every model and related products are unrestricted open source. Absent
another specific open-source license, we use the BSD-style non-viral Web3D
license.
- Web3D Consortium Open-Source License for Models and Software
- https://www.web3d.org/x3d/content/examples/license.html
all the best, Don
--
X3D Graphics, Maritime Robotics, Distributed Simulation
Relative Motion Consulting https://RelativeMotion.info
On Sun, Jan 4, 2026 at 3:06 PM GPU Group <gpugroup at gmail.com> wrote:
> Yes of course use those examples except check the header area -- I might
> have borrowed a few from an x3d browser that was ahead on Layout and
> Layering, I can't remember the name of that browser, might be in the
> Browser Node Support Table. Any that have no licence or author info just
> assume MIT or CC0 or whatever you want.
> -Doug Sanden
> https://wiki.web3d.org/wiki/index.php/Player_support_for_X3D_components
> - was it Swirl that was ahead on layout/layering?
> https://freewrl.sourceforge.io/tests/35_Layering/
>
> On Sun, Jan 4, 2026, 3:12 p.m. John Carlson <yottzumm at gmail.com> wrote:
>
>> How about it Doug, can this example be used in the archive?
>>
>> Thanks!
>>
>> John
>>
>> On Sun, Jan 4, 2026 at 3:20 PM Holger Seelig <holger.seelig at yahoo.de>
>> wrote:
>>
>>> Please not that this Viewport.x3d test is from the freewrl tests
>>> directory and will look same in freewrl.
>>>
>>>
>>> https://create3000.github.io/Library/Tests/Components/Layering/Viewport.x3d
>>>
>>> https://freewrl.sourceforge.io/tests/35_Layering/
>>>
>>> Best regards,
>>> Holger
>>>
>>> —
>>> Holger Seelig
>>> holger.seelig at yahoo.de
>>>
>>>
>>> Am 04.01.2026 um 21:52 schrieb John Carlson <yottzumm at gmail.com>:
>>>
>>> Holger’s example here has a rich use of clipBoundary!
>>>
>>>
>>> https://github.com/create3000/Library/blob/main/Tests/Components/Layering/Viewport.x3d
>>>
>>> Hopefully, you’ll get a donation!
>>>
>>>
>>> John
>>>
>>> On Sun, Jan 4, 2026 at 12:14 PM Don Brutzman <don.brutzman at gmail.com>
>>> wrote:
>>>
>>>> Appreciate your offer of a sophisticated example, but that is not what
>>>> the archives and implementer community need right now.
>>>>
>>>> In addition to LayerSet Layer Viewport, you have prototypes (which
>>>> overly complicate a simple test) and Script code (which is not well
>>>> supported by all X3D browsers).
>>>>
>>>> ComposedCubeMapTexture and ComposedShader and ShaderPart add further
>>>> complications that are not widely supported.
>>>>
>>>> The request remains, for anyone: simple example demonstrating Viewport
>>>> (perhaps with Layer LayerSet and no other more-complex nodes).
>>>>
>>>> I recently sent everyone a long explanation of why simple examples are
>>>> important, especially for issue requests.
>>>>
>>>> - [x3d-public] Request for X3D encoding comment output from X3DPSAIL
>>>> -
>>>> https://web3d.org/pipermail/x3d-public_web3d.org/2025-December/022165.html
>>>>
>>>> Hope this helps.
>>>>
>>>> all the best, Don
>>>> --
>>>> X3D Graphics, Maritime Robotics, Distributed Simulation
>>>> Relative Motion Consulting https://RelativeMotion.info
>>>> <https://relativemotion.info/>
>>>>
>>>>
>>>> On Sun, Jan 4, 2026 at 9:48 AM John Carlson <yottzumm at gmail.com> wrote:
>>>>
>>>>> You can use this example of clipBoundary, in the archives, if you
>>>>> replace the shaders and images:
>>>>>
>>>>>
>>>>> https://github.com/coderextreme/X3DJSONLD/blob/master/src/main/data/bumpyx_itesliders.x3d
>>>>>
>>>>> I was working on a version with different shaders and no images. The
>>>>> sliders didn’t work in FreeWRL, so I shelved it. It’s available on this
>>>>> page, and you can use in the archives.
>>>>>
>>>>> https://coderextreme.net/X3DJSONLD/src/main/html/bumpyrefs.html
>>>>>
>>>>> I don’t know if the sliders work on these as I am on my phone. Try
>>>>> dragging the grey/white letters next to the = sign with the mouse.
>>>>>
>>>>> Again, much of this is Christoph Valentin and Doug Sanden’s work, with
>>>>> a new face!
>>>>>
>>>>> John
>>>>>
>>>>> On Sun, Jan 4, 2026 at 10:42 AM Don Brutzman <don.brutzman at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> John, we do not have a simple example demonstrating proper use of the
>>>>>> Viewport node in the X3D Example Archives, and so it is difficult to test
>>>>>> what you are reporting.
>>>>>>
>>>>>> all the best, Don
>>>>>> --
>>>>>> X3D Graphics, Maritime Robotics, Distributed Simulation
>>>>>> Relative Motion Consulting https://RelativeMotion.info
>>>>>> <https://relativemotion.info/>
>>>>>>
>>>>>>
>>>>>> On Sun, Jan 4, 2026 at 8:31 AM John Carlson via x3d-public <
>>>>>> x3d-public at web3d.org> wrote:
>>>>>>
>>>>>>> One of the gotchas in adding strict mode to Ajv JSON schema
>>>>>>> validation is Viewport.clipBoundary:
>>>>>>>
>>>>>>> Viewport : X3DViewportNode, X3DBoundedObject {
>>>>>>> MFNode [in] addChildren [X3DChildNode]
>>>>>>> MFNode [in] removeChildren [X3DChildNode]
>>>>>>> MFNode [in,out] children [] [X3DChildNode]
>>>>>>> MFFloat [in,out] clipBoundary 0 1 0 1 [0,1]
>>>>>>> SFBool [in,out] bboxDisplay FALSE
>>>>>>> SFNode [in,out] metadata NULL [X3DMetadataObject]
>>>>>>> SFBool [in,out] visible TRUE
>>>>>>> SFVec3f [] bboxCenter 0 0 0 (-∞,∞)
>>>>>>> SFVec3f [] bboxSize -1 -1 -1 [0,∞) or -1 -1 -1
>>>>>>> }
>>>>>>>
>>>>>>> I don’t recall if this was discussed on the mailing list before.
>>>>>>>
>>>>>>> The error reported was:
>>>>>>>
>>>>>>> strict mode: "prefixItems" is 4-tuple, but minItems or maxItems/items are not specified or different at path "#/oneOf/1/properties/%40clipBoundary"
>>>>>>>
>>>>>>>
>>>>>>> I don’t know if # prefixItems = 4 is appropriate here, since
>>>>>>> clipBoundary is an MFFloat. I don’t know how to set a default for MFFloat
>>>>>>> without prefixItems. I could set minItems = 0
>>>>>>>
>>>>>>> The JSON schema says:
>>>>>>>
>>>>>>> "@clipBoundary": {
>>>>>>> "$comment": "MFFloat inputOutput",
>>>>>>> "type": "array",
>>>>>>> "prefixItems": [
>>>>>>> {
>>>>>>> "default": 0,
>>>>>>> "maximum": 1,
>>>>>>> "minimum": 0,
>>>>>>> "type": "number"
>>>>>>> },
>>>>>>> {
>>>>>>> "default": 1,
>>>>>>> "maximum": 1,
>>>>>>> "minimum": 0,
>>>>>>> "type": "number"
>>>>>>> },
>>>>>>> {
>>>>>>> "default": 0,
>>>>>>> "maximum": 1,
>>>>>>> "minimum": 0,
>>>>>>> "type": "number"
>>>>>>> },
>>>>>>> {
>>>>>>> "default": 1,
>>>>>>> "maximum": 1,
>>>>>>> "minimum": 0,
>>>>>>> "type": "number"
>>>>>>> }
>>>>>>> ],
>>>>>>> "items": {
>>>>>>> "maximum": 1,
>>>>>>> "minimum": 0,
>>>>>>> "type": "number"
>>>>>>> }
>>>>>>> },
>>>>>>>
>>>>>>>
>>>>>>> X3DUOM 4.0 says:
>>>>>>>
>>>>>>> ConcreteNode name="Viewport">
>>>>>>> <InterfaceDefinition specificationUrl="
>>>>>>> https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/layering.html#Viewport
>>>>>>> "
>>>>>>> appinfo="Viewport is a Grouping node that can contain most nodes.">
>>>>>>> <componentInfo name="Layering" level="1"/>
>>>>>>> <Inheritance baseType="X3DViewportNode"/>
>>>>>>> [snip]
>>>>>>> <field name="clipBoundary"
>>>>>>> type="MFFloat"
>>>>>>> accessType="inputOutput"
>>>>>>> default="0 1 0 1"
>>>>>>> minInclusive="0"
>>>>>>> maxInclusive="1"
>>>>>>> description="clipBoundary is specified in fractions of the normal
>>>>>>> render surface in the sequence left/right/bottom/top."/>
>>>>>>> [snip]
>>>>>>>
>>>>>>> An addition, such as min/max length, if needed, would be a welcome
>>>>>>> addition to X3DUOM.
>>>>>>>
>>>>>>> Also X3DUOM 4.0 XML ConcreteNode Viewport wasn’t viewable on my
>>>>>>> iPhone in Google drive as downloaded from web3d.org (there was no
>>>>>>> way to view the full XML in safari, chrome or on sourceforge or drive).
>>>>>>> I probably could have downloaded from sourceforge.
>>>>>>>
>>>>>>> So I used my old copy on GitHub.
>>>>>>>
>>>>>>> John
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> x3d-public mailing list
>>>>>>> x3d-public at web3d.org
>>>>>>> http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>>>>>>>
>>>>>>
>>>
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