Wallpaper

[Trekiak]

Hi,
I've got a problem with my wallpaper picture.
Indeed, although it appears on my viewport, the picture doesn't show up when I render.
Could anybody help me?
Thank you in advance,
Trekiak

[Will J]

If you're using a background bitmap, it wont show up in renders as it's for reference only. You'd have to use a textured plane if you want to render it.

[Trekiak]

Allright, thanks a lot, but how can I do that?
If I texture a normal plan, then the image has a distance, and I can't adapt my view so that it fits to the image...
I don't know if I'm being clear now...
Trekiak

[Will J]

What exactly are you trying to achieve? There may be an easier way to reach your goal.

[Trekiak]

I'm trying to render an interior view of a building with the outside landscape in the background (visible through the windows).

[Will J]

Well in that case you have two options. Assuming that you aren't animating it, you could define the render environment as white or green or whatever bright solid color. Then you can take your renders into photoshop, cut out the green and stick an image behind it.
Alternatively you could map a plane with a bitmap. Search for "mapping" in help and you will find guides on how to do this. This would work with an animation too.

[Trekiak]

OK, thanks a lot!
Trekiak

[Scott Schneider]

use the picture frame tool and this will apply your background image on a surface plane. Then you can position it where you need it for the render. A basic form of projection mapping in rhino.

[gery]

You could also map your image to the environment instead of it having a color. You will want to use hdr images though. This is situated in the Vray menu (that's the render soft I use), in Options, Environment. There you click the M besides Skylight and Background and you map it there.

Gery

[Yuriy]

What should I do if I am using VRay and HDR Image but no matter how size of model is changing - environment view stays the same (no matter how I Zoom in or Zoom out the view)

[ledisnomad]

Personally, I'm for the Photoshop (PS) method. Since you are using Vray, you can render the alpha channel. Then when you save the image, choose PNG and anywhere that you see sky in the rendering will be transparent. In PS, open your PNG and add your image as a layer under the rendering. Scale the background image all you want. If you have glass or other transparent materials, make sure you check the alpha box in the material's options so you'll see through those too. If you decide to use this method and I'm not clear, feel free to ask for clarification.

If you really want to include it in the rendering, then the sizing issue has to be taken care of in the environment map. You can change the number of times it repeats and the rotation, but it is trial and error since you can't see it until you render. In the Environment options, select the M and edit the values for repeats. Larger numbers means more repetitions which means smaller image.

[Yuriy]

Thanks for reply, ledisnomad,
seems that Photoshop method is much easier. Since I want to render as less as possible in order to not wait so long for the final result. So it works fine for me.
But.
What about shadow under the object, that you getting from render? Is it also included in alfa channel? Because I could draw the shadow in PS but I am not so good in knowledge of lights and shadows to be 100% sure I drew the shadow in exactly correct way how it should be considering current sources of lights.

[ledisnomad]

Could you post a screenshot of your scene and/or a test render? You could try placing an infinite plane to get the shadow. I'd have to see your particular scene to think of anything more specific. In PS you'd have to manually erase the plane if you wanted to see grass or whatever from your background.