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Merging 2D bezier curves into a 3D one

  1. May 7, 2012 #1
    This is my first post, and I hope I'm not in the wrong forum.

    I'm a CG artist working for the film and animation industry. I'm currently programming (in my spare time) a free tool for animator, that give the ability to edit the animation curves directly in 3d in a bi-directional way.
    You can see a short demo here: vimeo.com/20538565

    It's working quite fine, but now I would like to push it forward and give the ability to display and edit the curve's tangents!
    Unfortunately I just can't get it...Currently, I'm evaluating the global

    I have three bezier curves, one for each axis of a cartesian 3d space, that represents a translation in time.
    I need to convert the tangent handles ( P1 and P2 for a 4 point bezier curve) X,Y values of each axis into 3D positions that will give me the ability to rebuild a curve in 3D.

    I hope my explanations are not too confuse.
    Kind regards.
  2. jcsd
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