[SOLVED] How the curved edges are drawn in the preview mode?

[kaigephi]

I am very interested in knowing how the curved edges are drawn in the "preview" mode.

First, what type of curve is it? A Bezier curve? And how is it computed?

Second, how to decide which side a edge bends to? There are always two options and how to choose between them? Is there any heuristics such as reducing the edge crossings or keeping all the edge bending to the same side?

I tried to look into the source code, but can't find where the code is (probably because I am very new to gephi

[eduramiba]

Hi kaigephi,

Yes the curves are bezier curves and the direction of the edge is clockwise (see http://forum.gephi.org/viewtopic.php?t=973)
And as far as I know there is no heuristic, just curved edges.

The class that calculates it is org.gephi.preview.EdgeImpl of PreviewImpl module.

Eduardo