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

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:

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 Clausen (| 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?

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