sky box question

juliusctw · Post by **juliusctw** » Sun Jun 04, 2006 3:17 am

Hello
Right now when i create the skybox using the standard method, the skybox moves with the character, and the character is always in the center of the skybox, what if i don't want my camera always in the center but lower, this way i can see more of the skybox instead of just half? i checked out the API, it iddn't seem to give that option, is that true?

luckymutt · Post by **luckymutt** » Sun Jun 04, 2006 3:35 am

create a box, invert the normals, texture with the skybox images accordingly, load it and scale to taste

juliusctw · Post by **juliusctw** » Sun Jun 04, 2006 6:13 am

Hello my problem with the sky is not the inversion, my sky is seamless

right now, the camera is designed to be in the center of the box, i want to know if i can shift the camera down so the camera is closer to the bottom instead of being in the center.

i think i might have to touch irrlicht for this

jam · Post by **jam** » Sun Jun 04, 2006 7:06 am

I think he is suggesting that you not use the skybox scenenode but create your own skybox model and load it in as a seperate model, that way you can move the "skybox" around anyway you wish, but then again I could be wrong.

luckymutt · Post by **luckymutt** » Sun Jun 04, 2006 6:43 pm

Exactly.
The SkyBox by its nature, is just a background that stays put.
If you wanna be in a different position relative to the SkyBox, I'm saying you'll prolly have to do it as a mesh.
However, to get it big enough to still be seen as the sky, you may have to scale it quite large, possibly to the point that you would need to adjust the camera's far clipping plane so it doesn't disappear.

good luck

Havok · Post by **Havok** » Sun Jun 04, 2006 10:34 pm

delete

hybrid · Post by **hybrid** » Sun Jun 04, 2006 11:18 pm

Irrlicht is using a 3d skybox. It is a cube with normals targetting inwards. Since the skybox is an ISceneNode why not use setPosition? If this does not work I'd suggest to add and expose a matrix and add the matrix transformation before rendering the skybox instead of doing everything from scratch.

bitplane · Post by **bitplane** » Mon Jun 05, 2006 4:05 am

I think moving the box up would ruin the seamless effect between the walls and floor. you'd have to render the skybox textures with the camera frustum wider/taller on the bottom view than at the top and the sides, and then line it all up in irrlicht. sound like a lot more trouble than its worth

juliusctw · Post by **juliusctw** » Mon Jun 05, 2006 6:27 am

thanks everybody

i wanted to keep my frustrum short, so creating my own skybox is out of the question,

the other suggestions sounded rather difficult

, maybe i should just be happy with what i have

luckymutt · Post by **luckymutt** » Mon Jun 05, 2006 12:18 pm

alternately, if you just wanna place the camera lower, then repaint your skybox with photoshop or gimp or whatever, riaing the ground in the images.
If you are adept with 2dCG, it wouldn't be that tough to keep it seamless.
Just a thought.

juliusctw · Post by **juliusctw** » Tue Jun 06, 2006 3:17 am

hello

thanks for the suggestion, i don't have a fps type camer, i have my own which tracks a walking character, so i can't place the camera lower

it'l ok, what i have is good enough

thanks everybody

Irrlicht Engine

sky box question

sky box question

I don't think you can scale them

wow, that's complicated

i'm all out