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Iray light (want white ground with the shadow of the figures)

kayto93_073094d40ckayto93_073094d40c Posts: 100
in New Users

Hi guys,

i need a little bit help. I want a simple scene like this http://thumbs.dreamstime.com/z/d-white-peple-smart-phone-g-sign-technology-concept-renderer-image-communication-isolated-background-66808794.jpg

White ground and background only the shadow of the figure is visible on the ground. I thought with a simple day light i can get it but it was to bright and when i make it more dark than the ground get grey.

I hope someone know how to do it

great

K4YT0

 

Comments

  • BeeMKayBeeMKay Posts: 7,019
    edited April 2016

    You need a reflective surface to make the figure visible. For example, if you use white Car Paint shader from the Iray default Uberbase shaders on a plane, and place that under the character.

    Post edited by BeeMKay on
  • Hiro ProtagonistHiro Protagonist Posts: 699

    I don't know if there's a really easy way, but the render below was created with a white plane, 100m square, (set to Iray shiny plastic, base colour white, with glossy reflectivity set to 1 and roughness set to 0) and a white environment map (512 x 256. I just copied the default environment map and filled it with white, value 1.0). This is quite bright and I set environment intensity to .75 (much lower and it starts to look grey) with default exposure. I also used a bright mesh light to create extra shadows. As in your example it's a combination of reflection and shadows. The edge of the plane is in the scene, but I can't see the join to the environment (should be easy to post out if necessary).

    white_plains.jpg
    900 x 745 - 135K
  • kayto93_073094d40ckayto93_073094d40c Posts: 100

    thx i will try it. in the attachfile is a render how it looks at the moment.

    baseK.png
    500 x 650 - 159K
  • kayto93_073094d40ckayto93_073094d40c Posts: 100

    nice thx with the plastic shiny material it works but is there a way to eliminate the mirror effect or isnt possible?

  • kayto93_073094d40ckayto93_073094d40c Posts: 100

    here u can see what i mean :D

    mirror .png
    500 x 650 - 344K
  • BeeMKayBeeMKay Posts: 7,019

    I took your first post and the attached picture that you wanted that mirroring effect...

    increase the glossy roughness, that will reduce the reflection.

  • kayto93_073094d40ckayto93_073094d40c Posts: 100

    okay nice thanks. U was a great help :)

  • kayto93_073094d40ckayto93_073094d40c Posts: 100

    i got it. Roughness do this what i didnt want the ground get grey. But i changed the 'Base mixing' in the surface tab to 'weighted'

     

  • BeeMKayBeeMKay Posts: 7,019

    Perhaps, this will help you: http://pre03.deviantart.net/1320/th/pre/f/2015/351/4/9/tutorial___iray_by_dordiales-d9kh87j.png

    (It belongs to this blog, which also has other nice explanations: http://dordiales.deviantart.com/art/Tutorial-Iray-578591695

  • CrimsonMagicCrimsonMagic Posts: 129

    Not sure if this is what you want ...
    Just set
    Render Settings -> Environment -> Draw Dome to OFF
    Render Settings -> Environment -> Draw Ground to ON
    then render (see pic01) and save as png.
    In your paint program you should then be able to use the png's alpha channel
    as mask to set everything to white except the figure and shadow (see pic02).

    01.jpg
    837 x 813 - 277K
    02.jpg
    800 x 663 - 40K
  • kayto93_073094d40ckayto93_073094d40c Posts: 100

    oh nice thats good to know. Thank you that makes all more easy without shaders.

     

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