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HOT for Vray for Maya

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  • HOT for Vray for Maya

    Ok, an update. Did a test render based on the HOT library(Houdini Ocean Toolkit).
    With help from Nico Rehlberg I was able to compile and output HOT data to Vray for Maya.
    Right now Im using Vector Displacement and also a "foam map" (Eigenvalues<0) that indicates where the wave breaks.

    Video 1 shows a HOT ocean surface with water shader and simple foam.
    https://vimeo.com/49128478
    alt download mov file: http://www.timjan.org/public/tessendorf_vray_v01.mov

    Video 2 shows the same surface upclose with simple shading. Note the waves where it breaks/inverts.
    https://vimeo.com/49128479
    alt download mov file: http://www.timjan.org/public/tessendorf_vray_v02.mov

    Technical stuff:
    Im still trying to figure out what to include in the final Vray shader.
    Useful stuff like the "Eigenvalues" indicates where the wave breaks, but there also seems to be some "foam vectors", Eplus and Eminus.
    Any Tessendorf experts or creative individuals that have any idea what these can be used for?

    Saw some blender guys digging in on the Iwave solver to get reflecting waves.
    Can this be combined with HOT/tessendorf??

    I think Maya Ocean optimize ocean displacement by outputting all the fine details with bump maps.
    Can this be a good idea here aswell? (all waves shorter than x::bump maps)

    To be continued...
    Last edited by timdog; 09-09-2012, 06:21 PM.

  • #2
    great work Tim

    let me know if u need testers for HOT

    cheers

    Comment


    • #3
      Heya

      Mao thats nice new ! Good work on shader and so on thanks ! As a side note any way to tune it to make the sea more like desert dunes? I was wondering the other day how to make them and I come across this script for max...

      Thanks, bye.
      CGI - Freelancer - Available for work

      www.dariuszmakowski.com - come and look

      Comment


      • #4
        Thanks guys I´ll post the shader here as soon as its ready to use.

        Regarding the dunes its kinda possible I think, did a quick test by upping the "shortest wave" parameter:
        Click image for larger version

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        Besides that I got a really interesting side effect by tweaking the dunes, a really cool and stylized ocean surface:
        Click image for larger version

Name:	funky_v01.jpg
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ID:	846046

        Remember that theres already a working hot deformer that essentially does the same thing as my shader:
        http://www.nico-rehberg.de/shader.html

        Comment


        • #5
          Heya

          MM dummes looks pretty promising ! If we can only somehow contrast the tips... That would make it a good base for modeling and so on so wow gratz!!!
          CGI - Freelancer - Available for work

          www.dariuszmakowski.com - come and look

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          • #6
            very nice work here. This looks very good to me.
            I tested HOT some time ago, and it was quite nice to use.

            continue, continue
            www.mirage-cg.com

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            • #7
              timdog my friend whats up? any update?

              cheers

              Comment


              • #8
                +1 bump!! plz

                Comment


                • #9
                  I was wondering about HOT and its tiling, for example if you zoom out the tiling pattern is very noticeable, is there a way to avoid the tiling at all? The vray results look great though!
                  Dmitry Vinnik
                  Silhouette Images Inc.
                  ShowReel:
                  https://www.youtube.com/watch?v=qxSJlvSwAhA
                  https://www.linkedin.com/in/dmitry-v...-identity-name

                  Comment


                  • #10
                    Yeah, allthough Tessendorff tiles can be very large tiling can become a problem.
                    I know that Naiad has a system based on HOT that randomizes the ocean structure.
                    An idea would be to blend two hot ocean surfaces based on a noise map. Ive seen people do it with Mayas ocean.

                    Comment


                    • #11
                      By the way, sorry for the delay.
                      I didnt have time for personal projects lately so the plug is still on hold.
                      Ill try to finish it during christmas holiday

                      Comment


                      • #12
                        Originally posted by timdog View Post
                        By the way, sorry for the delay.
                        I didnt have time for personal projects lately so the plug is still on hold.
                        Ill try to finish it during christmas holiday
                        Thank you timdog !
                        I hope you will find time.
                        www.deex.info

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                        • #13
                          Hi,
                          Any news about this ?
                          www.deex.info

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                          • #14
                            amigo, i know that we r maybe boring but could u plz give us some update on this?

                            thx

                            Comment


                            • #15
                              timdog if ur too busy

                              is it possible to share the source i would like finish it, i have some friends who would like to help me?

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