[x3d-public] x3d-public Digest, Vol 76, Issue 6

Thu Jul 9 12:20:42 PDT 2015

Many thanks for the replies. My query makes me appear really naive.

I have no problem navigating viewpoints in various viewers. My problem
is how to specify the viewpoints in the code, or rather how to specify
a succession of  viewpoints of the different sides of a cube --
presumably using a mix of position and orientation.

So far I have:

<Viewpoint  position="0.0 0.0 0.47" description="Default"
fieldOfView="0.436332"/>

<Viewpoint  position="0.47 0.0 0.0" orientation="0 1 0 1.571"
description="Blue view" fieldOfView="0.436332"/>

<Viewpoint  position="0.0 0.47 0.0" orientation="0 1 0 1.2"
description="Trial" fieldOfView="0.436332"/>

So in the above, the first two work just fine, giving me two sides of
the cub, but I cannot combine position and orientation in the third to
view another side.

The cube example is a good one to clarify the documentation for those
less skilled. Both "position" and "orientation" are readily
comprehensible (in theory), so there is something missing in my
comprehension -- and in the documentation, as  I would argue

Thanks for your comments

Tony

On 09/07/2015, x3d-public-request at web3d.org
<x3d-public-request at web3d.org> wrote:
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> Today's Topics:
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>    1. Re: Better Viewpoint examples/clarifications? (doug sanden)
>    2. Re: Better Viewpoint examples/clarifications? (Limper, Max)
>    3. Re: Issue: X3D V4 Functionality (doug sanden)
>    4. Re: Better Viewpoint examples/clarifications? (Leonard Daly)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 9 Jul 2015 07:10:51 -0600
> From: doug sanden <highaspirations at hotmail.com>
> To: "x3d-public at web3d.org" <x3d-public at web3d.org>
> Subject: Re: [x3d-public] Better Viewpoint examples/clarifications?
> Message-ID: <BAY181-W70C261034C53BF48C1D320B6900 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
> I don't know about authoring tools, but usually x3d browsers have a way to
> advance down a list of viewpoints.
> Vivaty: right click> Views> Next, Previous, Last, First, Default
> Freewrl: menubar: < and> buttons, or keyboard 'v'=next 'b'=back
>
>>
>> As a novice, having successfully completed a relatively complex WRL
>> with X3D Edit, came the moment of putting in a set of Viewpoints, in
>> the light of information variously available.on the web
>>
>> My need is trivial, basically centered on a cube whose sides I want to
>> view looking down the three axes -- possibly 6 views.
>>
>> Default is fine. I can "turn" the cube once, successfully to a new
>> viewpoint position with suitable use of orientation. I cannot switch
>> to any other view of the cube, despite having played with multiple
>> variants of viewpoint and orientation.
>>
>> The matter is so trivial, but the explanations variously available do
>> not seem to match my need. And the examples are not as helpful as
>> might be assumed.
>>
>> More generally, it is intriguing how hard it is to position new forms
>> within any framework, despite use of the xyz axes widget.
>>
>> Tony.
>
>  		 	   		
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 9 Jul 2015 13:16:05 +0000
> From: "Limper, Max" <max.limper at igd.fraunhofer.de>
> To: 'doug sanden' <highaspirations at hotmail.com>,
> 	"x3d-public at web3d.org"	<x3d-public at web3d.org>
> Subject: Re: [x3d-public] Better Viewpoint examples/clarifications?
> Message-ID:
> 	<59A2F7345900E2478F1FD18FABBBCAAE14D1E6C9 at EXMBS1.ad.igd.fraunhofer.de>
> Content-Type: text/plain; charset="us-ascii"
>
> In x3dom, you can switch viewpoints using the "bind" attribute (it's a
> special kind of field), or, more easily, using the pg up / pg down keys.
>
> -----Original Message-----
> From: x3d-public [mailto:x3d-public-bounces at web3d.org] On Behalf Of doug
> sanden
> Sent: Donnerstag, 9. Juli 2015 15:11
> To: x3d-public at web3d.org
> Subject: Re: [x3d-public] Better Viewpoint examples/clarifications?
>
>
> I don't know about authoring tools, but usually x3d browsers have a way to
> advance down a list of viewpoints.
> Vivaty: right click> Views> Next, Previous, Last, First, Default
> Freewrl: menubar: < and> buttons, or keyboard 'v'=next 'b'=back
>
>>
>> As a novice, having successfully completed a relatively complex WRL
>> with X3D Edit, came the moment of putting in a set of Viewpoints, in
>> the light of information variously available.on the web
>>
>> My need is trivial, basically centered on a cube whose sides I want to
>> view looking down the three axes -- possibly 6 views.
>>
>> Default is fine. I can "turn" the cube once, successfully to a new
>> viewpoint position with suitable use of orientation. I cannot switch
>> to any other view of the cube, despite having played with multiple
>> variants of viewpoint and orientation.
>>
>> The matter is so trivial, but the explanations variously available do
>> not seem to match my need. And the examples are not as helpful as
>> might be assumed.
>>
>> More generally, it is intriguing how hard it is to position new forms
>> within any framework, despite use of the xyz axes widget.
>>
>> Tony.
>
>  		 	   		
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> x3d-public at web3d.org
> http://web3d.org/mailman/listinfo/x3d-public_web3d.org
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>
> ------------------------------
>
> Message: 3
> Date: Thu, 9 Jul 2015 07:21:59 -0600
> From: doug sanden <highaspirations at hotmail.com>
> To: "x3d-public at web3d.org" <x3d-public at web3d.org>
> Subject: Re: [x3d-public] Issue: X3D V4 Functionality
> Message-ID: <BAY181-W9189F297FD5F135D93CB85B6900 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
>> How do we determine what should be in the HTML Profile of X3D V4?
>>
> Option 1: if a node can be automatically generated from another node, then
> its a convenience node
> In desktop x3d some nodes are 'convenience' nodes. Extrusions simplify
> indexedfacesets.
> One thought is to eliminate all convenience nodes from html profile, if a
> transform can be done automatically:
> convenience node -> automatic transform -> primitive node
>
> Then if someone has a desktop x3d scene, they can upload it to a cloud
> facility that automatically converts it to html profile compliant.?
>
> Option 2: As-is
> The gurus working on x3dom invested their time and life, and they want to
> make it popular/a success,, and their judgement about tradeoffs can be
> trusted, so ask them. Or -since their judgement went into the current distro
> of x3dom- simply document the current distro as the defacto x3d html
> standard.
>
> I suspect unlike native browsers, there will be few ground-up competitors to
> x3dom, so when you are documenting standards, its primarily for authoring
> tools.
> -Doug
>
>
>  		 	   		
>
>
> ------------------------------
>
> Message: 4
> Date: Thu, 09 Jul 2015 07:26:06 -0700
> From: Leonard Daly <web3d at realism.com>
> To: x3d-public at web3d.org
> Subject: Re: [x3d-public] Better Viewpoint examples/clarifications?
> Message-ID: <559E847E.6090108 at realism.com>
> Content-Type: text/plain; charset="windows-1252"; Format="flowed"
>
> Tony,
>
> I have read the replies from Max and Doug. Their answers were how to
> interact with various X3D browsers to go from one viewpoint to the next.
>
> When developing the specification, the X3D WG explicitly chose not to
> specify how to provide that interaction because of all of the different
> kids of devices that might be used to view X3D content. The thought is
> that browsers builders in conjunction with users would standardize on a
> mechanism for Viewpoint navigation or the content author would provide a
> mechanism to do so that was appropriate for the content.
>
> If this was not your question, can you please restate the issue so
> someone can answer it?
>
> Thank you,
>
> Leonard Daly
>
>
>
>> As a novice, having successfully completed a relatively complex WRL
>> with X3D Edit, came the moment of putting in a set of Viewpoints, in
>> the light of information variously available.on the web
>>
>> My need is trivial, basically centered on a cube whose sides I want to
>> view looking down the three axes -- possibly 6 views.
>>
>> Default is fine. I can "turn" the cube once, successfully to a new
>> viewpoint position with suitable use of orientation. I cannot switch
>> to any other view of the cube, despite having played with multiple
>> variants of viewpoint and orientation.
>>
>> The matter is so trivial, but the explanations variously available do
>> not seem to match my need. And the examples are not as helpful as
>> might be assumed.
>>
>> More generally, it is intriguing how hard it is to position new forms
>> within any framework, despite use of the xyz axes widget.
>>
>> Tony.
>>
>
>
> --
> *Leonard Daly*
> X3D Co-Chair
> Cloud Consultant
> President, Daly Realism - /Creating the Future/
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> End of x3d-public Digest, Vol 76, Issue 6
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-- 
Anthony Judge
<anthony.judge at gmail.com>
www.laetusinpraesens.org