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 Lightmaps

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alain
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PostSubject: Re: Lightmaps   Mon 20 Jul - 20:50

as it is holidays here , I retried 3DSMax

it took me one day to do that because I had forgetten all Sad

http://dumenieu.free.fr/louizeforum/seamless/zoetshad3shadowschange_2.chiseled.wrl

the idea to have the shadows changing comes from jacinto
copyright Smile

of course you know from where comes the avatar , thanx Thyme copyright Smile


btw it is a pain for me to have the lights changing in he same time as the maps Sad


next time I will try to put a Touch Sensor

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Omind
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PostSubject: :-)   Mon 20 Jul - 21:21

Excellent job. Lightmaps ad alot of realism to a model.
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alain
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PostSubject: Re: Lightmaps   Mon 20 Jul - 21:30

thanx Bruce , Wink

btw it took me one day LOL for this poor result

Have you examples of - more or less - shadows in vrml ?
- more or less dynamic shadows ? -

I am sure it will be the future , but dont know who worked about

I wonder why SecondLife dont work on that ,
they have "dynamic movements " for hair or clothes ,
but nothing about shadows .

If I am not wrong .


I spoke just now with my great son Asheanor ,
and he told me that it is a prob for the puters to get them .


I know nothing about all that

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Fersen
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PostSubject: Re: Lightmaps   Mon 20 Jul - 21:49

You mean for example the shadow of a tree which is moving when the tree is moving too ?
They have but it takes more prims (something like polygones) and you know they are limited by the number of prims in a sims (world).
So they have to make some choices when they decide to build something.
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Omind
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PostSubject: Lightmaps   Mon 20 Jul - 22:03

If I am not mistaken, BS Contact 7.2 addresses dynamic shadowing. In truth, I have not had a chance to look into it, but I have heard that there are some problems with it....
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peter le cochon
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PostSubject: Re: Lightmaps   Mon 20 Jul - 23:40

Very Happy

Nice work/world, Alain.

Unfortunately, shadow/light mapping has been seldomly used in VRML, but it has been allways possible (even under VRML 1.0).

Shadowmaps (and other) are a 'production-time' job ... I mean, you must do the job on your modelling software, and you must be good with it. Nothing will do the job for you later, during 'run-time'.

I can only remember Fersen and Chrysagon doing it... ah! ... and now Alain ... sure there have been others...

This ability, combined with a good understanding and usage of standard VRML lights and materials (Griff!), have given the (visually) best worlds to VRML.

'Dynamic shadows' are probably the thing to come (or already here), but beleive me :

1) not every hardware can handle them

2) if the rest of the world - it's textures and lights - are poorly done, the result will still be as poor as a traditional 'cone-cylinder-box' world..

Resuming : the features of 'modern' vrml-x3dviewers are less important than the artist's skills.

Peter pig dixit.
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alain
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PostSubject: Re: Lightmaps   Tue 21 Jul - 0:41

thanks for the "encouragements " , Peter

I spent my evening trying the "Touch" ,

http://dumenieu.free.fr/louizeforum/seamless/zoetshad3shadowschange_chiseled_touch.wrl

I wonder why I have not a techie or a pig at home to make me more quick LOL

btw thanks Thyme to allowed me unlighting Zoe ( or Lucy ? LOL , I am always lost with the names - altzheimer Smile



reedit :

better I think

http://dumenieu.free.fr/louizeforum/seamless/zoetshad3shadowschange_chiseled_touch2.wrl



and re reedit , thanks too to jacinto , because
by hazar he gaves me the idea phoning me that morning , LOL
as I was just re trying 3DSMax Smile

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Omind
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PostSubject: Lightmaps   Tue 21 Jul - 1:10

It's true that all the real work is done in the modeling stage, unfortunately some of it can create fairly large texture files, but if done right, it looks great. Here is a humble sample I played with using lightmaps and animated lighting to get the desired effect.

http://spafon.com/StarsEnd/TempleA1.wrl
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peter le cochon
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PostSubject: Re: Lightmaps   Tue 21 Jul - 8:18

Very Happy ... yes, those are nice, subtile, shadows.

And nowadays, whilest people are watching HD videos on youtube, we should not bother about filesizes that much. The upper limits of poly-count have also been shifted by modern bandwidth and hardware.

It has been said repeadetly - and I agree : VRML was born before it's time.

TC pig
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legloups
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PostSubject: Re: Lightmaps   Tue 21 Jul - 9:05

Alain très sympa ton travail sur les lightmap Very Happy

Oui Omind, j'ai vu ça et c'est très intéressant Very Happy
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alain
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PostSubject: Re: Lightmaps   Wed 22 Jul - 12:08

re excited yesterday with lightmaps and the idea jacinto had to "change" them

( merciii jacinto !! Smile




as I tried to help him for a toro ,
at the end of te day I had that LOL

http://dumenieu.free.fr/vrml/zik/toro.wrl


still lost to synchronise the lights and lightmaps changing LOL Sad


( toro from Gamon's horse , of course ) - thanx too -


Well , you could see where jacinto is working with his corrida :

enter the chat here :

http://www.costoso.net/atelier


type your nick and avatar ,

none world ,
just clik "enter"


see you there may be



...


reedit :


jacinto tells me that the shadows change typing


12h 13h 14h 15h 16h 17h

ou

2h 3h 4h 5h 6h


it works very well AND !! is is shared event of course
( you know jacinto LOL )


I am a bit ashame to have borrowed that idea , but I wanted to see if it could be done with a TimeSensor

eventually having it working with the real time ( of the puter for instance )

but that needs many lightmaps ,
and it takes me 1 day to get only 2 lool

re merci jacinto , btw

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alain
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PostSubject: Re: Lightmaps   Wed 22 Jul - 18:13

May be the first time I saw lightmaps as pics , it was with the Chrysagon's tavern .
I always tought these images strange and beautiful .

I wanted to get that in 3D vrml .

I got some after years .Small ones .

Now I think that they are enought beautiful as images .
It is a way to show 3D in 2D LOL .
( more "seriously" ( ? lol ) I think they show the human and machine relationship , in a way , humm )

Fersen is too much kind with me to allow me to show some she did here :

http://mixed3d.free.fr/alain/maps/galerielightmaps.wrl



mixed with some I did .

After that I mailed Jean-Yves , and he told me :

Quote :
c'est bien, mais ça a un côté un peu sec
vide de vraie vie

et pourtant on a l'impression d'être tout près
par exemple la poignée de porte limite vraie

tu devrais essayer d'insérer des bouts de ta vraie vie
(comme tu fais par ailleurs)
l'ombre virtuelle de la femme
mais aussi un vrai bout de femme

la silhouette d'une fenêtre virtuelle
mais aussi une vraie fenêtre de chez toi, etc...

to resume : " put real life on it "

I know that real artists must listen nothing when they are working LOOL

but I tried that , as a skech :

http://mixed3d.free.fr/alain/maps/galerielightmapsportejour.wrl



I beg your pardon if the topic becomes egotist ,LOL , but I have great fun with all that Smile

Will try to be more patient using 3DS Sad

And Fersen gaves me ideas too , thanx , Smile , je vais faire mon possible LOL

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PostSubject: Re: Lightmaps   Thu 23 Jul - 19:46

no finished , but I am on that step

http://mixed3d.free.fr/alain/maps/galerielightmapslucyzoenoson.wrl

I must set up a symposium
with myself to see if it is interesting / of some value
to continue Smile


I made that below because my favorite Browser ( Crazy)
doenst display wrls sometimes Sad

http://mixed3d.free.fr/alain/maps/galerielightmapslucyzoenoson.htm

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PostSubject: Re: Lightmaps   Thu 20 Aug - 11:12

As legloups had a nice tree in the last Petit Infographiste ,
I tried to enter it in 3DSMax , to make shadows .


1 - First problem : having the gifs leaves with the transparency !
( I tried too with pngs , but same prob .

2 - second prob , the Render to texture gives me flat shapes Sad





3 - I wonder if we could save gifs when Rendering to Texture the ground .
( to have the shadow moving )

I saw on some forums that it seems not , and tried avi but didnt succeeded .

...


http://dumenieu.free.fr/vrml/shadows/arbre3ds.wrl


pfffff.....


After all that I used the sort of way Olivier Lunot - Tidus used in his Park for JOI .

I added a flat shape with a gif for the shadows .

http://dumenieu.free.fr/vrml/shadows/arbre3dsombremove.wrl

I added a flat shape with a gif for the shadows .

But more exactly Tidus moved a jpg as texture of the ground .

May be better and easier if it is well scaled .
( that is not the case here , LOL :

http://dumenieu.free.fr/vrml/shadows/arbre3dsombremove22.wrl

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PostSubject: Re: Lightmaps   Thu 20 Aug - 18:39

Ah pour tes ombres, il faut rajouter la couche alpha sous 3DS, comme ça tu auras les ombres de toutes tes feuilles Wink
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alain
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PostSubject: Re: Lightmaps   Sun 15 Nov - 16:03

a joke on the textures ,

( but a tuto for my bad memory too Smile

- tuto toi-même ! Smile

http://pagesperso-orange.fr/alaindumenieu/artvrml/261109.htm

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PostSubject: Re: Lightmaps   Mon 5 Dec - 14:43

It is very strange to come back here in this topic after 6 years I began it...

Anyways I had other experiments before today,
but today was my first one with dynamic shadows on unity3d.

http://mixed3d.free.fr/unity3d/smartfox/zoeshadowsPlayer.html

I do know that BScontact could do that ,but 1,there is the shit logo,
second , it is very simple with unity


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