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Jean Prouvé - S.A.M. Tropique table - 1950

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  • M Offline
    massimo Moderator
    last edited by 13 Mar 2013, 17:17

    Pilou, I have no problem at all in sharing materials. I've done that many times. However I think it's more fun trying to rebuild it. 😉

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    • M Offline
      massimo Moderator
      last edited by 13 Mar 2013, 18:21

      @unknownuser said:

      I'd like this model in my library 😉

      Ok, you can find it here

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      • N Offline
        notareal
        last edited by 14 Mar 2013, 00:15

        @rich o brien said:

        The result is perfect but my understanding of fresnel was for fabrics. This is where my confusion begins.

        Custom fresnel has other uses too, for example it can be used to create a car-paint that changes the color based on viewing angle... it's not only the reflectance color tham can be changed, but curve itself can be modified (there some preset when you right click on custom curve area, when it's enabled)

        I think massimo got a novel idea to use it with these finger prints. 👍

        Welcome to try [Thea Render](http://www.thearender.com/), Thea support | [kerkythea.net](http://www.kerkythea.net/) -team member

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        • D Offline
          dale
          last edited by 14 Mar 2013, 15:50

          So much to learn.... so little time 😲

          Just monkeying around....like Monsanto

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          • M Offline
            massimo Moderator
            last edited by 18 Mar 2013, 08:23

            Rich here you have some experiments to play with on a bit unorthodox use of the fresnel effect.
            Just a fingerprints map in the fresnel reflectance slot with a custom curve...
            fresnel.jpg
            fresnel_mat.JPG
            ...the same material with a roughness map added in order to enhance a bit the effect.
            fresnel+roughness.jpg
            roughness.JPG
            Of course you can do almost the same using the map in the reflectance slot, but here the effect is more subtle and slightly changes in relation to the angle of view.

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            • M Offline
              massimo Moderator
              last edited by 18 Mar 2013, 10:42

              And here you can see the fresnel effect in reflections on some aged plastic.
              fresnel effect.jpg
              Cattura.JPG

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              • R Online
                Rich O Brien Moderator
                last edited by 18 Mar 2013, 11:06

                You can definitely see the impact the roughness map has on the fingerprints. If find just the fresnel looks the best.

                Is the tweaking of the custom curve just a hit and miss affair? I can see the presets but is there info somewhere on this?

                Download the free D'oh Book for SketchUp

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                • M Offline
                  massimo Moderator
                  last edited by 18 Mar 2013, 11:19

                  @unknownuser said:

                  I can see the presets but is there info somewhere on this?

                  As far as I know for Thea you have just this at the moment. But of course you can find something searching on the net.

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                  • R Online
                    Rich O Brien Moderator
                    last edited by 18 Mar 2013, 11:37

                    Thanks for that.

                    @everyone...

                    sorry for spoiling this thread with meaningless banter that should occur over on the Thea forums

                    Download the free D'oh Book for SketchUp

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                    • M Offline
                      massimo Moderator
                      last edited by 18 Mar 2013, 11:38

                      Anyway the concept is basically that at a 0° deg angle you can see reflections coming from what you have in the reflectance slot, and at 90° deg angle you'll see reflections coming from what you have in the fresnel slot. Adjusting the curve you can change this transition/balance relating to the viewing angle (in the x axes you have the degrees). Here you have the same plastic with a different curve. As you can see the transition in reflections is more abrupt from 0° to 90° deg because the curve goes from 0° to 90° deg more drastically.
                      fresnel.jpg
                      Cattura.JPG

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                      • R Online
                        Rich O Brien Moderator
                        last edited by 18 Mar 2013, 11:46

                        How have you the Structure box in the same area as the Scatter box?

                        Another off topic query.... 😒

                        That explanation makes perfect sense.

                        Download the free D'oh Book for SketchUp

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                        • M Offline
                          massimo Moderator
                          last edited by 18 Mar 2013, 11:48

                          @unknownuser said:

                          sorry for spoiling this thread with meaningless banter that should occur over on the Thea forums

                          Well I think that many rendering app (for example Vray & Maxwell) support something like that. So maybe interesting also for non-Thea users. 😄

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                          • M Offline
                            massimo Moderator
                            last edited by 18 Mar 2013, 11:55

                            @rich o brien said:

                            How have you the Structure box in the same area as the Scatter box?

                            Another off topic query.... 😒

                            That explanation makes perfect sense.

                            Control + Left Click (on Layer/Scatter/Struct buttons). Merge layer/scattering/structure properties listed in a single panel.
                            Cattura.JPG

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                            • R Online
                              Rich O Brien Moderator
                              last edited by 18 Mar 2013, 12:15

                              Thanks Massimo.... 👍

                              Download the free D'oh Book for SketchUp

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                              • B Offline
                                bytor
                                last edited by 22 Mar 2013, 01:24

                                I don't have any of these renderer's and I found this post most rewarding. Massimo - thanks so much for taking the time here to explain the detail in the material, and thanks for the model as well!

                                Find the Cost of Freedom.....

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                                • R Online
                                  Rich O Brien Moderator
                                  last edited by 25 Mar 2013, 22:00

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                                  Download the free D'oh Book for SketchUp

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