17
Apr
08

Spherical Height Maps

These Heightmaps create distorted spherical forms when fed into the input of the GL Height Field plugin in QC



The three images use different method of combining the live input video with the height field. All three methods seem to produce similar results in terms of the 3D mesh forms created.

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9 Responses to “Spherical Height Maps”


  1. 1 hob
    April 17, 2008 at 3:50 pm

    that’s really cool. took me a second to realise where the video input was coming from though!

  2. 2 hob
    April 17, 2008 at 4:06 pm


    Did I do it right? It looks great either way 🙂

  3. 3 hob
    April 17, 2008 at 4:07 pm

    d’oh, the HTML never made it in:

    Spherical Height Map?

  4. 4 hob
    April 17, 2008 at 4:32 pm

    hold on, if I’m reading this right, the height map can be lofted, based on the grey levels?

    i tried chucking everything into a 3D tranformation and rotating it to see if it was having any effect, but the rotation/translation did not affect the output image… strange…

  5. 5 toneburst
    April 17, 2008 at 4:58 pm

    Hi hob,

    my fault for not explaining things properly. That’s what happens when you keep a web sketchbook 😉

    The idea is that this image is patched into a GL Height Field plugin patch.
    There’s an XCode project in
    /Developer/Examples/Quartz Composer/Plugins
    Open, that, compile it by hitting the Build button, then drop the plugin from the XCode projects’s Build/Release folder into
    /Library/Graphics/Quartz Composer Plug-Ins

    When you restart QC, you should find a GL Height Field patch in the list.

    Now try connecting the Image input of the Height Field to your Heightmap image.

    It should all make more sense now…

    Hope this helps 🙂

    a|x

  6. 6 hiltmeyer.inc
    April 18, 2008 at 3:04 pm

    hell toneburst
    did u get the highfield work in vdmx. i tryed it with out any succes.
    keep th good work going
    greatz hiltmeyer.inc

  7. 7 toneburst
    April 18, 2008 at 4:39 pm

    Hiya hiltmeyer.inc

    haven’t tried it in VDMX. I’ll try it and get back to you.

    a|x

  8. 8 toneburst
    April 18, 2008 at 5:47 pm

    Hi again,

    yep, it seems to work OK in VDMX. Have you tried the demo QTZ in the next post? You’ll need to replace the video input object with a video splitter with an input published as ‘inputImage’. It actually needs a few tweaks to work in VDMX. It’s really just a work in progress at the moment. I’ll release a more functional (and better-looking) version of it sometime soon 🙂

    a|x

  9. 9 hiltmeyer.inc
    April 18, 2008 at 9:40 pm

    hi
    thanks try the demo qtz.


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