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How to find right place on image on skydome

WilmapWilmap Posts: 2,917
edited July 2015 in The Commons

You can't see the Dome in Iray preview so how can you work out what rotation you need to get just the part of the image you want?

I can never get my images where I want them.

Post edited by Wilmap on

Comments

  • HavosHavos Posts: 5,582
    edited December 1969

    wilmap said:
    You can't see the Dome in Iray preview so how can you work out what rotation you need to get just the part of the image you want?

    I can never get my images where I want them.

    If Draw Dome is on and your main viewport or the aux viewport is set to Draw Style "NVIDIA Iray" then you should be able to see the dome in the viewport. Now rotate the dome in the render settings until it is at the desired position.

  • WilmapWilmap Posts: 2,917
    edited December 1969

    Thanks for that. Slows up my PC a lot though!

  • HavosHavos Posts: 5,582
    edited July 2015

    wilmap said:
    Thanks for that. Slows up my PC a lot though!

    If the scene is complicated it will. Works better on the small Aux viewport in the corner, and even then things can get quite slow. I generally only activate it when moving/changing lights, or when you want to see how reflections will look for a particularly camera angle.

    Post edited by Havos on
  • JackReasonJackReason Posts: 144
    edited December 1969

    I've been pulling my hair out trying to set up outdoor scenes with Iray. I've tried various HDRI and sky images applied to the dome with the environment map. Scaling and rotating the dome has been difficult to get desired results. Setting the draw style to NVIDIA Iray does help.

    What has worked best for me is to use sun-sky if there are no other lights in the scene. If I am using additional lights, I use dome and scene. To get a nice sky positioned as I want, I use a sky image as a backdrop, placed with the environment pane. I have been using the sun dial to get my desired sun elevation and azimuth.

  • JackReasonJackReason Posts: 144
    edited December 1969

    One other thing...

    If using an image on the dome with the environment map, switch on NVIDIA Iray in the draw style. Turn on draw dome. Scale and rotate the dome before adding anything else to the scene. Then switch back to texture shaded (or desired mode) to build the scene.

    This allows positioning the dome and sky without dropping your computer to a crawl.

  • SnowSultanSnowSultan Posts: 3,773
    edited December 1969

    This journal I wrote a while back might help a little. Good luck, I know it can be a pain!

    http://snowsultan.deviantart.com/journal/Old-school-HDRI-lighting-in-Iray-523712116

  • j cadej cade Posts: 2,310
    edited December 1969

    wilmap said:
    Thanks for that. Slows up my PC a lot though!


    Easiest way is to hide most of the scene. For HDRs I will often hide everything and stick in a sphere primitive to make sue the shadows fall in the direction I want. If you want to keep more items in your scene, the best rule of thumb is hide objects with transparencies. When I setup portraits hair is hidden for 95% of the time. Also set objects that use subd to base resolution.

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