[x3d-public] ProtoInstance USE without name

[John Carlson]

Holger's Library probably still has ProtoInstance's with USE without a
name.  You'll probably want to check if they work in X3DOM.


On Sun, Nov 22, 2020 at 6:46 PM Andreas Plesch <andreasplesch at gmail.com>
wrote:

> Yes. I was saying these are the only Proto examples I came across which do
> have USE without a name. To me it would be clearer and more similar to
> regular nodes if name would be always added, perhaps even required (even
> though not strictly necessary).
>
> Andreas
>
> On Sun, Nov 22, 2020 at 6:21 PM John Carlson <yottzumm at gmail.com> wrote:
>
>> I'm not finding any name's and USE's together in ProtoInstance node in
>> the LOA*.x3d examples from the HAnim 2 part 1 spec.
>>
>> grep ProtoInstance LOA*x3d|grep USE|grep name
>>
>> John
>>
>> On Sun, Nov 22, 2020 at 5:02 PM Andreas Plesch <andreasplesch at gmail.com>
>> wrote:
>>
>>> Looking at why the old Prototypes for HAnim did not work properly for
>>> x3dom, I found that the xml examples typically have a ProtoInstance
>>> statement with a USE attribute but without the corresponding name attribute
>>> defining the actual node type. However, x3dom expects a name attribute with
>>> every ProtoInstance statement, even USE ones, to be able to insert the
>>> appropriate node.
>>>
>>> The xml spec  at
>>>
>>>
>>> https://www.web3d.org/documents/specifications/19776-1/V3.3/Part01/concepts.html#ProtoInstanceAndFieldValueStatement
>>>
>>> does not address USE of ProtoInstances but all examples always have a
>>> name attribute.
>>>
>>> Also, in my quite extensive testing of Protos, I did not come across
>>> other examples of ProtoInstance elements without a name attribute.
>>>
>>> To be fair, the name attribute is not strictly necessary for USE
>>> ProtoInstances since the type of the inserted node can be determined from
>>> the referenced DEF node. But having the name attribute makes ProtoInstance
>>> elements more similar to regular nodes. So I think not requiring the name
>>> attribute for USE ProtoInstances should be explicitly allowed in the xml
>>> spec., but still be encouraged.
>>>
>>> I do not think the xml spec. would be otherwise affected by V.4 ?
>>>
>>> Best, Andreas
>>>
>>> --
>>> Andreas Plesch
>>> Waltham, MA 02453
>>> _______________________________________________
>>> x3d-public mailing list
>>> x3d-public at web3d.org
>>> http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>>>
>>
>
> --
> Andreas Plesch
> Waltham, MA 02453
>
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