jpjst@unix.cis.pitt.edu (James P. Joyce) (02/14/91)
I have a set of 3-points. I would like to draw a spline through these points. Does anyone have any references or pointers to where I can look this up? Its easy enough to draw splines through 2-D points, but I'm not sure how to do it with 3-points. Thanks Jim
zap@lysator.liu.se (Zap Andersson) (02/26/91)
jpjst@unix.cis.pitt.edu (James P. Joyce) writes: >I have a set of 3-points. I would like to draw a spline through these >points. Does anyone have any references or pointers to where I can look >this up? >Its easy enough to draw splines through 2-D points, but I'm not sure how >to do it with 3-points. If what yuu refer to as 2D splines is a set of Y points as a '}ifunction' of set of }iX points, then that is really a 1D spline, where X is the 'time' axis. To traw an N dimension spline, use N of these 1D splines, where the set of X (time) values are the same for all variables. I use 7 D splines for camera motion in my raytracing program fr'instance... > Thanks > Jim Ye~rr welcome (sorry for the noisy line) /Z -- * * * * * * * * * * * * * * * * * (This rent for space) * My signature is smaller than * Be warned! The letter 'Z' is Copyright 1991 * yours! - zap@lysator.liu.se * by Zap Inc. So are the colors Red, Green and * * * * * * * * * * * * * * * * * Greenish-yellow (Blue was taken by IBM)
joerg@cat.de (Markus Schichtel) (03/05/91)
Zap Andersson (zap@lysator.liu.se) schrieb am 26. 2.: > jpjst@unix.cis.pitt.edu (James P. Joyce) writes: > > >I have a set of 3-points. I would like to draw a spline through these > >points. Does anyone have any references or pointers to where I can look > >this up? > > >Its easy enough to draw splines through 2-D points, but I'm not sure how > >to do it with 3-points. > > If what yuu refer to as 2D splines is a set of Y points as a '}ifunction' May I suggest to look into literature on Bezier or Bspline techniques they are formulated to use them in d-space. For more infos feel free to e-mail me personally. Markus --- Markus Schichtel (joerg@cat.de) C.A.T. Kommunikations-System, Frankfurt, Germany