Re: [Openpanorama-info] Update and need suggestions....

[James Rigg]

Mathieu,

> So, do you think it's a good thing to create a Panorama file format, and
> in the same time a viewer configuration file format?

I think this is a great idea, although I imagine we may disagree on where
you draw the line between the two.  another possible distinction is between
the image properties and the panorama properties.  For example:

Image properties:
* projection used (planar, equirectangular, cylindrical, cubic)
* hot spot (location/bounding box, name, description - but not what the hot
spot does)
* meta data (name, description, gps co-ordinates, etc)

Panorama properties (may comprise multiple images and other resources):
* how to render (flat / perspective corrected)
* whether to auto-rotate
* scripting movement
* hot spot "action" - hyperlink, scripted movement, sound
* etc

Viewer properties (not part of the openpanorama.org project?):
* viewer size
* whether to display a toolbar
* loading logo
* etc

What I have in mind is that in the image properties you might define the
area of a doorway and label it "front door" but you would not define what it
is supposed to "do".  It is the panorama properties file that defines what
hotspots are supposed to do.  Similarly, whether a VRML object is displayed
rendered within the panoramic scene, is something to be defined in the
panorama properties file and not the image properties.

If viewer attributes are part of the openpanorama.org project, we could
define a specific interface for the viewer, that makes it extensible.  This
would mean that someone could write a generic Java floorplan applet and have
it talk to the panorama applet to get and set orientation and view.

Just an idea...

J.
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----- Original Message -----
From: "Mathieu VILLEGAS" <address@hidden>
To: <address@hidden>
Sent: Thursday, January 16, 2003 7:58 PM
Subject: [Openpanorama-info] Update and need suggestions....


> Hello,
>
> Sorry for my bad english.
>
> I've update the document about the scripting language. You can download
> it in the download section ( the CVS has not been updated at this time).
> It's a first thought, so suggestions, corrections and ideas are welcome.
>
> I need your point of view for a little problem: at this time, I don't
> really know how to describe a rendering window (rectangle where the
> panorama is displayed) in the panorama. What parametrs do we have to set
> in the panorama files and which ones have to be viewer parameters.....
> In a first thought, I've think to create a camera object. So that, we
> will be able to do automatic camera movement and images or object
> movements ( automatic movements) with the same functions.. The camera
> knows its max ad min pan, tilt and zoom values, its x,y,z position
> (having x,y,z position may allow us to easily create the effects you
> will see in this page:  http://www.cs.ust.hk/~cpegnel/ACLP/thesis.html
> thanks to James Rigg for this link).
> Are the camera parameters able to set the rendering window size and
> position?
> Can we have more than one camera in a panorama file?
> Can we have more than one panorama in a file?
>
> In fact one of the problem here is to know what is part of a panorama
> parameters and data, and what is part of the viewer parametrs and data?
> If a viewer support all OpenPanorama file format specifications, it will
> be more easy to use OpenPanorama specifications (interfaces, buttons,
> images, etc....) to describe and configure the viewer.
> So, do you think it's a good thing to create a Panorama file format, and
> in the same time a viewer configuration file format? The viewer file
> format will use most the Panorama file format to describe its own
> interface, so it will have really a few things to do.
>
> Your suggestions, ideas, etc are welcome.
> Please send your mails to the mailing list.
>
> Regards
>
> Mathieu Villegas
>
>
>
>
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