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    Displacement maps from Fog

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    • J Offline
      jopsa2
      last edited by

      I apologise for the size of the images, I had to scale the image down to fit forum rules. Hopefully you'll get the gist of it without the larger images.

      I'm sure this isn't groundbreaking, it's just a method for creating displacement maps using the fog in Sketchup. Surely I'm not the first one to think it up, but I felt quite proud seeing the decent results it produced.

      http://forums.sketchucation.com/download/file.php?mode=view&id=33478&sid=10b6309c6dd4389f7c995fa9ca5be2ed


      test PQ.jpg

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      • EscapeArtistE Offline
        EscapeArtist
        last edited by

        That's really neat. What software are you using the displacement in?

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        • A Offline
          Aerilius
          last edited by

          Thanks! This is very helpful for me and much faster than making a depth render in KT.

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          • J Offline
            jopsa2
            last edited by

            Cheers guys! EscapeArtist, I'm using VRay to render it.

            I'm sure my technique with the fog can be refined, I was basically aiming to get as much contrast in Sketchup as possible.
            Also, I was telling a friend today about it, and he pointed out that displacement maps are basically hypsometric plans! (hypsometric plans are used in topography, they are colour-coded according to height)

            So now I'm printing out my displacement map because I can use it as a hypsometric 😄 very proud lol

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            • E Offline
              Ecuadorian
              last edited by

              Actually this technique can also be used to produce bump maps from geometry, very cool!

              -Miguel Lescano
              Subscribe to my house plans YouTube channel! (30K+ subs)

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              • M Offline
                mirjman
                last edited by

                how are you controlling the height of the displacement so that it matches real world units?

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                • J Offline
                  jopsa2
                  last edited by

                  @mirjman said:

                  how are you controlling the height of the displacement so that it matches real world units?

                  I'm not... 😕 😆 I just eyeballed it, did a couple of tests before settling... I did think about it, and I guess a more precise way of eyeballing it (so not precise either) would be opening both files, use the front view on both and compare.

                  I remember reading somewhere the multiplier for displacement maps had some real world meaning, I'll do some research.

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