CheckOutwardNormals
Version 1.0.0 (2.52 KB) by
Darrel Robertson
Checks face/vertex list of closed triangulated objects to make sure all normals are outward facing.
Checks normals are outward facing and re-orders face if not.
Works with concave objects and with cavities. e.g. swiss cheese
Only works with triangular faces
Requirements: Function TriangleRayIntersection by Jarek Tuszynski
Input: faces, F (Nx3)
vertices, V (Nx3)
Output: corrected face list so all normals are outwards facing
list of any faces reordered
Assumptions: Normals are from clockwise orientation of faces. I.e. Right hand rule
Shape is closed and watertight.
No duplicate faces
Potential improvements: TriangleRayIntersection accepts multi-face, multi-ray input so should be able to speed up by removing the loop over the faces.
Cite As
Darrel Robertson (2024). CheckOutwardNormals (https://www.mathworks.com/matlabcentral/fileexchange/169468-checkoutwardnormals), MATLAB Central File Exchange. Retrieved .
MATLAB Release Compatibility
Created with
R2024a
Compatible with any release
Platform Compatibility
Windows macOS LinuxTags
Acknowledgements
Inspired by: Triangle/Ray Intersection
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Version | Published | Release Notes | |
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1.0.0 |