On Mon, 3 Feb 2003, John Edstrom wrote: > On Mon, Feb 03, 2003 at 09:39:58AM -0600, Lars Clausen wrote: >> On Sun, 2 Feb 2003, John Edstrom wrote: >> > So far my biggest concern with a dot2dia transformation is that dot >> > uses splines and dia doesn't. Some of dot's edges get pretty baroque >> > in complex graphs and arcs and polylines can't do equivalently >> > tortuous paths as well. >> >> Can't you use Dia's beziers? As I understand it, there are standard >> translations between most such things. > > My background is not in graphics and I didn't know that. That would > simplify things immensely. Is there a list of such algorithms > anywhere?
I have my info from _Computer_Graphics_, by Hearn and Baker. Not the greatest book by any means, but it does describe transformation matrices between varies splines/beziers. Some related sites: http://escience.anu.edu.au/lecture/cg/Spline/printCG.en.html Note also that Dia's "bezier" isn't really a Bezier line. It's a string of line segments (I believe Bezier) with 4 control points each. The xfig import plugin has some hacky translation from FIG style splines to Dia beziers, but it's not exact. -Lars -- Lars Clausen (http://shasta.cs.uiuc.edu/~lrclause)| Hårdgrim of Numenor "I do not agree with a word that you say, but I |---------------------------- will defend to the death your right to say it." | Where are we going, and --Evelyn Beatrice Hall paraphrasing Voltaire | what's with the handbasket? _______________________________________________ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
