[x3d-public] extra NavigationInfo modes, ptm

Michalis Kamburelis michalis.kambi at gmail.com
Mon Jan 27 15:18:11 PST 2020


Andreas Plesch <andreasplesch at gmail.com> wrote:
>
> x3dom has an extra explorationMode field which restricts mouse function in examine/turntable mode.
> zoom, pan, rotate values restrict to only these.
> -zoom, -pan, -rotate disable these.
> The field tends to be quite useful.
>
> I think x-ite implemented Projective Texture Mapping.

Good news we have an implementation of PTM.

I had some questions about how the Projective Texture Mapping in X3D
v4 applies the texture -- what happens if the shape already has a
ImageTexture, what happens if shape already has MultiTexture etc. I
listed them on "TODO: Address how the projective texturing in spec
affects existing textures" in
https://github.com/michaliskambi/x3d-tests/wiki/Clarify-%22Projective-texturing%22-component#todo-address-how-the-projective-texturing-in-spec-affects-existing-textures
. I'll test how X_ITE answered these questions.

Regards,
Michalis

>
> ---on the phone---
>
> On Mon, Jan 27, 2020, 3:00 PM <x3d-public-request at web3d.org> wrote:
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>> Today's Topics:
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>>    1. Re: x3d v4 proposed changes > 2 opensource criteria > any
>>       that are short (GPU Group)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Mon, 27 Jan 2020 12:18:39 -0700
>> From: GPU Group <gpugroup at gmail.com>
>> To: X3D Graphics public mailing list <x3d-public at web3d.org>
>> Subject: Re: [x3d-public] x3d v4 proposed changes > 2 opensource
>>         criteria > any that are short
>> Message-ID:
>>         <CAM2ogRfqXoH1duy9iGvX9BEmLFCpiLbYYO_HwMuR7HbYXkRvmg at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> INVENTORY
>> FREEWRL
>> * X3Dv4 Implementations
>>    https://www.web3d.org/x3dv4-implementations
>> 1) 43 Projective Texture Mapping
>> x freewrl does not implement, document is mistaken
>> 2) 23.4.4 NavigationInfo > TURNTABLE
>> * freewrl implemented
>> (other freewrl navmodes and related not in v3.3:
>> DIST - explicit control over distance to pivot point for examine, turntable
>> - touchpads don't need RMB
>> SHIFT - turns off sensors
>> HOVER - isOver mode (useful for touch pad - allows triggering of isOver
>> only)
>> PEDAL - can drag 'floating cursor' in steps
>> SPHERICAL - like FLY: YAWPITCH except rotations constrained to viewpoint
>> local axes)
>> subsets of FLY: YAWZ, XY, YAWPTICH,ROLL)
>> 3) GeoSpatial > GeoOrigin - freewrl still allows in v3.3, never deprecated
>> in freewrl
>> 4) The rest freewrl has not implemented
>> /FREEWRL
>> Does this table miss anything?
>> /INVENTORY
>> -Doug Sanden
>> PS who's doing projective texture mapping? Should start with that?
>>
>>
>> On Mon, Jan 27, 2020 at 11:59 AM GPU Group <gpugroup at gmail.com> wrote:
>>
>> > INVENTORY
>> > FREEWRL
>> > * X3Dv4 Implementations
>> >    https://www.web3d.org/x3dv4-implementations
>> > 1) 43 Projective Texture Mapping
>> > x freewrl does not implement, document is mistaken
>> > 2) 23.4.4 NavigationInfo > TURNTABLE
>> > * freewrl implemented
>> > (other freewrl navmodes and related not in v3.3:
>> > DIST - explicit control over distance to pivot point for examine,
>> > turntable - touchpads don't need RMB
>> > SHIFT - turns off sensors
>> > HOVER - isOver mode (useful for touch pad - allows triggering of isOver
>> > only)
>> > PEDAL - can drag 'floating cursor' in steps
>> > SPHERICAL - like FLY: YAWPITCH except rotations constrained to viewpoint
>> > local axes)
>> > subsets of FLY: YAWZ, XY, YAWPTICH,ROLL)
>> > 3) GeoSpatial > GeoOrigin - freewrl still allows in v3.3, never deprecated
>> > in freewrl
>> > 4) The rest freewrl has not implemented
>> > /FREEWRL
>> > Does this table miss anything?
>> > /INVENTORY
>> >
>> >
>> > On Mon, Jan 27, 2020 at 11:14 AM Don Brutzman <brutzman at nps.edu> wrote:
>> >
>> >> Thanks for writing Doug.
>> >>
>> >> On 1/27/2020 6:01 AM, GPU Group wrote:
>> >> > A rule of web3d.org <http://web3d.org> is that changes to the spec
>> >> need a least 2 opensource implementations.
>> >>
>> >> * Web3D Standards Adoption Process
>> >>    https://www.web3d.org/standards/adoption-process
>> >>
>> >> 5.c. "Identify at least two independent and interoperable implementations
>> >> (at least one should be open source)"
>> >>
>> >> > Q. are there any proposed changes that do not yet have 2 opensource
>> >> implementations?
>> >>
>> >> Yes, plenty.  We have not taken a recent inventory of features yet, but
>> >> will be tracking that at
>> >>
>> >> * X3Dv4 Implementations
>> >>    https://www.web3d.org/x3dv4-implementations
>> >>
>> >> Our prominent open-source implementations for X3Dv3.3 include FreeWrl,
>> >> X_ITE, X3DOM, Castle Game Engine.  Soon Xj3D will be back on the table as
>> >> well.  There are also non-rendering X3Dv4 implementations for Java,
>> >> JavaScript, Python, conversions and validation.  Not sure about Titania but
>> >> presumably yes.  X3D-Editv4 is on the horizon. Interestingly everything on
>> >> this list is open source.
>> >>
>> >> Hoping that FreeWrl developers are keen to keep their record-setting X3D
>> >> support accomplishments continuing!  8)
>> >>
>> >> All feedback welcome, appreciate your many efforts.
>> >>
>> >> > Thanks,
>> >> > Doug Sanden
>> >> > -freewrl
>> >>
>> >> all the best, Don
>> >> --
>> >> Don Brutzman  Naval Postgraduate School, Code USW/Br
>> >> brutzman at nps.edu
>> >> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA
>> >>  +1.831.656.2149
>> >> X3D graphics, virtual worlds, navy robotics
>> >> http://faculty.nps.edu/brutzman
>> >>
>> >
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