Second Life Forums Archive - planar texturing rawks

paulie Femto

Into the dark

Join date: 13 Sep 2003

Posts: 1,098

03-08-2006 09:00

Planar texturing seems to allow a texture to be applied to a surface without regard for the topsize. Neato!

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Argent Stonecutter

Emergency Mustelid

Join date: 20 Sep 2005

Posts: 20,263

03-08-2006 10:02

Try playing with planar textures on twisted sliced toruses.

paulie Femto

Into the dark

Join date: 13 Sep 2003

Posts: 1,098

freaky on spheres

03-08-2006 11:36

Pt looks freaky on spheres.

I wonder if LL can use planar texturing to improve terrain textures, specifically the sides of mountains where textures look strangely stretched...

_____________________

REUTERS on SL: "Thirty-five thousand people wearing their psyches on the outside and all the attendant unfettered freakishness that brings."

Argent Stonecutter

Emergency Mustelid

Join date: 20 Sep 2005

Posts: 20,263

03-08-2006 12:12

From: paulie Femto

Pt looks freaky on spheres.

Try taking a sphere or torus, twisting it -360..360, flattening it in the Z axis, and applying a planar texture. Then try it with various dimpling options.

I agree, planar textures on terrain would rock.

Beatfox Xevious

is THOUSANDS OF PEOPLE

Join date: 1 Jun 2004

Posts: 879

03-08-2006 13:00

From: Argent Stonecutter

I agree, planar textures on terrain would rock.

Actually, I believe terrain textures are already planar-mapped (to the latitude-longitude plane -- don't remember offhand which XYZ plane that is). This is what causes the distortions paulie mentions in the first place. Unfortunately, since there's no way to divide land into distinct "sides" as with prims, there will always be distortion on slopes.

It may be possible to map based on surface normals, but this could be a little complicated to calculate (and it still would require some degree of texture distortion, though it shouldn't be as noticeable). Maybe someone with more knowledge on texture mapping could chime in here?

Edit: After thinking about it a little more, I'm not so sure the surface-normal mapping would really work out. The mapping for all the surrounding ground would pretty much have to be recalculated every time the ground was altered, and there would be vast differences in texture scale everywhere. Hmm... maybe planar mapping on several different planes could be used, and the ground would blend between them based on surface normal...

_____________________

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paulie Femto

Into the dark

Join date: 13 Sep 2003

Posts: 1,098

texturing for dummies

03-08-2006 13:38

I'm no texture guru. I was just spitballin when I suggested using planar projections for terrain.

Hers's a link to a "texturing for dummies" article:
http://www.newtek.com/products/lightwave/tutorials/surface/texturing_for_dummies_002/

For ideas on generating and texturing game terrain, maybe some of these would help:
http://www.vterrain.org/Games/

Since LL is already using Havok for physics, FMOD for sound, moving to SPEEDTREE for trees and foliage, maybe they could use a third-party terrain system, too.

_____________________

REUTERS on SL: "Thirty-five thousand people wearing their psyches on the outside and all the attendant unfettered freakishness that brings."

Candide LeMay

Registered User

Join date: 30 Dec 2004

Posts: 538

03-09-2006 02:01

Which reminds me ... we need a way to set this using a script!

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Strife Onizuka

Moonchild

Join date: 3 Mar 2004

Posts: 5,887

03-09-2006 03:18

Thank you Candide for reminding me. I keep forgetting to write a feature suggestion.

BTW the lands UV texture cords never change. Only the Z cord in the mesh X & Y are static.

_____________________

Truth is a river that is always splitting up into arms that reunite. Islanded between the arms, the inhabitants argue for a lifetime as to which is the main river.
- Cyril Connolly

Without the political will to find common ground, the continual friction of tactic and counter tactic, only creates suspicion and hatred and vengeance, and perpetuates the cycle of violence.
- James Nachtwey

Beatfox Xevious

is THOUSANDS OF PEOPLE

Join date: 1 Jun 2004

Posts: 879

03-09-2006 12:52

From: Strife Onizuka

BTW the lands UV texture cords never change. Only the Z cord in the mesh X & Y are static.

Well, if you're gonna get all technical about it...

_____________________

My Beatworks: Zephyr Chimes wind chimes, the KanaMaster Japanese kana tutor, and the FREE Invisibility Prim Public. Look for them at the Luskwood General Store in Lusk (144, 165).

"You have been frozen. You cannot move or chat. A pony will contact you via instant message (IM)."
- mysterious system message I received after making off with Pony Linden

planar texturing rawks
paulie Femto Into the dark Join date: 13 Sep 2003 Posts: 1,098	03-08-2006 09:00 Planar texturing seems to allow a texture to be applied to a surface without regard for the topsize. Neato! _____________________ REUTERS on SL: "Thirty-five thousand people wearing their psyches on the outside and all the attendant unfettered freakishness that brings."
Argent Stonecutter Emergency Mustelid Join date: 20 Sep 2005 Posts: 20,263	03-08-2006 10:02 Try playing with planar textures on twisted sliced toruses.
paulie Femto Into the dark Join date: 13 Sep 2003 Posts: 1,098	freaky on spheres 03-08-2006 11:36 Pt looks freaky on spheres. I wonder if LL can use planar texturing to improve terrain textures, specifically the sides of mountains where textures look strangely stretched... _____________________ REUTERS on SL: "Thirty-five thousand people wearing their psyches on the outside and all the attendant unfettered freakishness that brings."
Argent Stonecutter Emergency Mustelid Join date: 20 Sep 2005 Posts: 20,263	03-08-2006 12:12 From: paulie Femto Pt looks freaky on spheres. Try taking a sphere or torus, twisting it -360..360, flattening it in the Z axis, and applying a planar texture. Then try it with various dimpling options. I agree, planar textures on terrain would rock.
Beatfox Xevious is THOUSANDS OF PEOPLE Join date: 1 Jun 2004 Posts: 879	03-08-2006 13:00 From: Argent Stonecutter I agree, planar textures on terrain would rock. Actually, I believe terrain textures are already planar-mapped (to the latitude-longitude plane -- don't remember offhand which XYZ plane that is). This is what causes the distortions paulie mentions in the first place. Unfortunately, since there's no way to divide land into distinct "sides" as with prims, there will always be distortion on slopes. It may be possible to map based on surface normals, but this could be a little complicated to calculate (and it still would require some degree of texture distortion, though it shouldn't be as noticeable). Maybe someone with more knowledge on texture mapping could chime in here? Edit: After thinking about it a little more, I'm not so sure the surface-normal mapping would really work out. The mapping for all the surrounding ground would pretty much have to be recalculated every time the ground was altered, and there would be vast differences in texture scale everywhere. Hmm... maybe planar mapping on several different planes could be used, and the ground would blend between them based on surface normal... _____________________ My Beatworks: Zephyr Chimes wind chimes, the KanaMaster Japanese kana tutor, and the FREE Invisibility Prim Public. Look for them at the Luskwood General Store in Lusk (144, 165). "You have been frozen. You cannot move or chat. A pony will contact you via instant message (IM)." - mysterious system message I received after making off with Pony Linden
paulie Femto Into the dark Join date: 13 Sep 2003 Posts: 1,098	texturing for dummies 03-08-2006 13:38 I'm no texture guru. I was just spitballin when I suggested using planar projections for terrain. Hers's a link to a "texturing for dummies" article: http://www.newtek.com/products/lightwave/tutorials/surface/texturing_for_dummies_002/ For ideas on generating and texturing game terrain, maybe some of these would help: http://www.vterrain.org/Games/ Since LL is already using Havok for physics, FMOD for sound, moving to SPEEDTREE for trees and foliage, maybe they could use a third-party terrain system, too. _____________________ REUTERS on SL: "Thirty-five thousand people wearing their psyches on the outside and all the attendant unfettered freakishness that brings."
Candide LeMay Registered User Join date: 30 Dec 2004 Posts: 538	03-09-2006 02:01 Which reminds me ... we need a way to set this using a script! _____________________ "If Mel Gibson and other cyberspace writers are right, one day the entire internet will be like Second Life." -- geldonyetich
Strife Onizuka Moonchild Join date: 3 Mar 2004 Posts: 5,887	03-09-2006 03:18 Thank you Candide for reminding me. I keep forgetting to write a feature suggestion. BTW the lands UV texture cords never change. Only the Z cord in the mesh X & Y are static. _____________________ Truth is a river that is always splitting up into arms that reunite. Islanded between the arms, the inhabitants argue for a lifetime as to which is the main river. - Cyril Connolly Without the political will to find common ground, the continual friction of tactic and counter tactic, only creates suspicion and hatred and vengeance, and perpetuates the cycle of violence. - James Nachtwey
Beatfox Xevious is THOUSANDS OF PEOPLE Join date: 1 Jun 2004 Posts: 879	03-09-2006 12:52 From: Strife Onizuka BTW the lands UV texture cords never change. Only the Z cord in the mesh X & Y are static. Well, if you're gonna get all technical about it... _____________________ My Beatworks: Zephyr Chimes wind chimes, the KanaMaster Japanese kana tutor, and the FREE Invisibility Prim Public. Look for them at the Luskwood General Store in Lusk (144, 165). "You have been frozen. You cannot move or chat. A pony will contact you via instant message (IM)." - mysterious system message I received after making off with Pony Linden

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planar texturing rawks