In this tutorial I'm showing a method to visualize principal direction of any given mesh geometry.

[Project File]
https://github.com/jhorikawa/HoudiniH...

[Hip file implementing principle curvature]
https://github.com/jhorikawa/HoudiniH...

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[Houdini Turorials Playlist]
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[Books]
Algorithmic Design Workbook with Houdini: https://gum.co/GOZFw
Tiling Pattern with Houdini: https://gumroad.com/l/OVDgY
Algorithmic Design with Houdini: http://www.bnn.co.jp/books/9788/
Books on BOOTH: https://orangejellies.booth.pm/

[Contact]
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