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    More Hdri , Reflection question

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    • P Offline
      phmeier
      last edited by

      Ive seen sometopics talking about hdri and reflections .. but uhmm, lets see ..

      Ive tryied in a diferent project, i couldt realize it. How it was a secondary detail, left it behind... now im trying again. Well .. i want things to reflect teh enviroment, but i dont want a bg and want sky as my source of light. This i way coundt apply a hdri map to any of these.. Well.. so ive apllyed a Hdri image to the reflection at the enviroment vray option.

      UHmm ok .. the glass is reflecting .. but , a problem is the position ,, i have these maps , im trying to figure the way to apply each of them.. angular, cubic, mirror ball and etc , but doesnt matter how i do that i cant find a way to have my image all reflected. . i mean , just one piece is reflected its like the image is too big .. i have tryied to increase the number of repeations ( how do i write that?) .. but again, , the image is too big ,,, well here is a bulding im modeling ,, and ive applyed a hdri that would fit very well, that it could be reflect entirelly !!! C- u guys !

      http://i65.photobucket.com/albums/h233/jullysixx/sandiego0989.png

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      • Al HartA Offline
        Al Hart
        last edited by

        Was your HDRi just one or two trees. To work properly, a HDRi should be a complete 360 degree by 360 degree spherical image, (or at least 360 x 180 - above the horizon), so it can provide lighting and reflected images from all possible directions.

        One "trick" I use when examining HDRi's for reflection is to place a large reflective dome on the ground, or a large reflective sphere in the model to see how the reflection is working. This is much easier to see - with a spherical object reflecting from several angles - then to look at reflection in a couple of windows and try to guess what is happening.

        Al Hart

        http:wiki.renderplus.comimageseefRender_plus_colored30x30%29.PNG
        IRender nXt from Render Plus

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        • P Offline
          phmeier
          last edited by

          Oh sorry ,,, my mistake .. well in this image tha trees are not part from the hdri they´re 2d trees located at the other side of the street .. The hdri is basiclly a bkue sky with clouds and mountains .. ive tryied another ones tih houses .. but all of them just reflect a small part in a big scale ..

          I will try this dome thing !!! But anyway ,, is there a way to reduce or map how it will reflect !?!

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          • Al HartA Offline
            Al Hart
            last edited by

            @phmeier said:

            Oh sorry ,,, my mistake .. well in this image tha trees are not part from the hdri they´re 2d trees located at the other side of the street .. The hdri is basiclly a bkue sky with clouds and mountains .. ive tryied another ones tih houses .. but all of them just reflect a small part in a big scale ..

            I will try this dome thing !!! But anyway ,, is there a way to reduce or map how it will reflect !?!

            In general "no" - an HDRI needs to cover the entire universe. However there may be some tools to help you create a HDRI by repeating a smaller pattern.

            You might also try some full HDRi skies from the web, such as this one:

            http://www.hdrmill.com/PanoramaThumbnails/Free Samples/SunnyRenoSuburb01.jpg

            Free HDRi Skies

            Al Hart

            http:wiki.renderplus.comimageseefRender_plus_colored30x30%29.PNG
            IRender nXt from Render Plus

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