Mesh "Flow Line"

Dear All,

I have a quad mesh, and I would like to pick those edges so that I have a minimum of points where more than two edges meet. I have gotten pritty fare but it doesn't work in all cases see atached file.

Idea was to use neighbourhood condition to define face orientation...

Any ideas?

Replies to This Discussion

Permalink Reply by David Rutten on September 21, 2017 at 1:04am

I don't get it, the only place where only two edges meet is at the corner points of a mesh, even points along naked edges will always have a valence of at least 3.

Permalink Reply by Richard Schaffranek on September 21, 2017 at 3:29am

Sorry for being imprecise thought the drawing would do it. At the end I want a set of Lines which come from the edges of the faces, and there should be a minimum of points where three lines meet.

And of course lines should be "flow" (whatever that means) along the shape. That is why the idea was to have a vector for each face that is orientated along the longest diagonal, use alignment behaviour based on the neighbours of each face to select the mesh edges (0,2) as Lines to use.

This works really good in the back but as soon as you come to more complicated areas where two directions meet it doesn't.

So the question was if there is any other way to do it? Hints would be enough...

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