Surface Paneling Deviation Angle

by biboarchitect

Dec 22, 2011

Hi All,

been struggling trying to detect how much panel deviate from its neighbors (same as in Paneling tools), and use these information to group panels according to how much they deviate (to use them for flattening according to surface curvature)? 

Any help how to make a panel detect neighboring panels?

I simple subdivided my surface into panels and trying to get this information. (see image attached)

Appreciate your help.

Cheers

bibo

  • up

    Jissi Choi

     

    I don't agree to your image..

     

    I think the panels are not flat.. and don't know what the angles between edges mean..

     

    Rather.. if I were you, I'll check the (average) normal vector between neighbor panels..

     

    Here is my suggestion..

     

    Anyway you can use partially to calculate angles between neighboring vectors from a vector-data set of 2-dimensional matrix..

     

     

    Dec 22, 2011

    • up

      biboarchitect

      Hi Jissi,

      Thanks for your reply.

      I know my panels are not flat.. I am trying to calculate the angle of deviation of each panel according to its neighbors& according to each panels on itself, (which is easy), to decide which one to keep convert to flat panels and which single curved or double curved...

      What am thinking is: to calculate the angle of deviation between panels u need to calculate the angle between edges (correct me if I am wrong please, I am just guessing:)) ), then give some tolerances (less angle convert to flat, big angles be single or double curved panels, (according to angles on both directions, U &V) 

      Finally, Thanks for your file and explanation, I will give it a try, although I don't beleieve measuring the angle between normals will define what i am aiming to, I need TWO angles per panel to determine (or as I think, and again, please correct if I am wrong).

      Cheers

      bibo

      3

      Dec 22, 2011

      • up

        biboarchitect

        Hi Jessi/Manuel,

        Jessi's def is really helpful, I have learned things from it, yet i won't completely solve what am aiming to. It won't differentiate between single and double curved panels.

        I have created a couple of sketches to demonstrate my idea clearly..(excuse my scanning quality, used my mobile)

        The target is to detect whether Panel B is Flat, Single or Double curved panel.

        Case (1)

        Two angles between Panels A &B have small vlaues

        Two angles between Panels B & C have small values

        There Panel B is Flat.

        Case (2)

        Two angles between Panels A &B have big vlaues

        Two angles between Panels B & C have small values

        There Panel B is single curved at Panel C direction.

        Case (3)

        One angle between Panels A & B has small value, second has big value

        One angle between Panels B & C has small value, second has big value.

        There Panel B is twisted; i.e. Double curved panel ... and so on..

        Hope that's demonstrates my idea better.

        Trying to achieve that: http://data-tribe.net/wework4her/quad_panel/user%20manual.htm

        Please let me know what you think.

        cheers

        bibo

        2

        Dec 22, 2011