Live object distortion


    Mar 21 2006 | 2:08 am
    Hi List,
    I was wondering if is there a way to link X / Y values from a motion tracking could be applied to distort the shape of and object, like sending info to 3D max or Maya to distort. Or perhaps if its possible to affect the geometry of a object in openGL. if it is, is it possible to do real time? Thanks so much!!
    tbird

    • Mar 21 2006 | 2:23 am
      On Mar 20, 2006, at 8:08 PM, Bird wrote:
      > I was wondering if is there a way to link X / Y values from a > motion tracking could be applied to distort the shape of and > object, like sending info to 3D max or Maya to distort. Or perhaps > if its possible to affect the geometry of a object in openGL.
      You mean like making a donut throb in time to those techno beats? Andrew Benson regaled our last Max/MSP/Jitter workshop with this bit of Really Unique Image Processing. Perhaps by distributing it, more people will decide to do something else. Please.
      See that scale message? There are other messages that can be sent to the jit.gl.gridshape object. perhaps you might wish to look at some other ones on the reference page. For the rest, it's a matter of putting the image following output where peakamp~ is.
      gregory
    • Mar 21 2006 | 2:40 am
      thank you for that most happy of toroids, Gregory. here's a variation on a theme, i'll count it as "something else".
      -mark
    • Mar 21 2006 | 2:42 am
      Thanks for your reply Gregory,
      I was thinking to have perspective distortions of a room for example (square shape), related to X and Y values from a motion track. Like if you change vanishing points in a perspective drawing.
      Cheers man
      tbird
    • Mar 21 2006 | 2:50 am
      And so shines a good deed in a weary world, to quote Willy Wonka by way of The Bard. Onward until the throbbing techno torus is a mere memory like unto orchestral hits in a sampler!
      owner of a lonely heart, gregory
    • Mar 21 2006 | 3:00 am
      You might exploit the lens_angle attribute of jit.gl.render or manually manipulate the vertices of jit.gl.model in matrix output mode, or use a custom vertex shader.
      -Joshua
    • Mar 21 2006 | 3:01 am
      You looked at Tutorial 32 on camera view? Might be helpful in terms of moving the furniture. There are all kinds of possibilities and other ways to do anything. You might want to visit maxobjects.com and take a look at the inimitable Jasch's rotatexyz object, too.
      And in case you haven't done so already, have a looksee at Mr. Henrikson's little tweak; having had the pleasure of his presence onstage as a visualist for a recent performance in Minneapolis, I think I can say with some confidence that you could do a LOT worse than following *him* around. :-)
      gregory
    • Mar 21 2006 | 4:20 pm
      just to add to the confusion: