[LDPE] 1.8.64 Released (rectifier defaults / usability / txt2dat)

[Philippe Hurbain]

Thanks for your feedback! I am thinking about removing "interpolate flatness" completely. It just adds vertices to line segments, which is "pointless"*

1.) I prefered direct colours. When I implemented it, a few years ago, I wanted to use them, because it does not collide with anything which might be already in your file.
2.) * "interpolate flatness" is basically a workaround to avoid triangulation errors, but it also introduces a lot of additional triangles. I will try to find a solution with a constrained Delaunay triangulation. This will make the interpolated flatness unnecessary. For this, I can take a look at Ross Crawford's work, too! (#947)
3.) Constrained Delaunay triangulation will solve this (#946).
4.) I created an issue (#948).
5.) I created another issue (#949).
6.) The "min angle" has no effect. It is not used. I will try to find out, what the original intention was (#950).

1: you have a point! Alternatively you could give the user the choice of colors, but probably not worth the trouble!