ISEQUALTRIANGULATION Compares triangulations and their orientations

Usage Notes

For a sample triangulation of f faces, the output will be an f x 1 vector: values of 1 mean that the face is found in the template, values of -1 mean that the face is found with the opposite orientation, and values of 0 mean that the face is not found.

Examples

ismemberTriangulation([1 2 3], [1 2 3])
rng(1); f=delaunay(rand(9,2)); x=ismemberTriangulation(f,f); assert(all(x==1));
rng(1); f=delaunay(rand(9,2)); x=ismemberTriangulation(f,f(randperm(12),:)); assert(all(x==1));
rng(1); f=delaunay(rand(9,2)); x=ismemberTriangulation(f,f(:,[1,3,2])); assert(all(x==-1));
rng(1); f=delaunay(rand(9,2)); x=ismemberTriangulation(f,f(randperm(12),[1,3,2])); assert(all(x==-1));

v=table2array(combinations(1:3,1:3)); f1=delaunay(v); v2=v+v(:,1); f2=delaunay(v2); ismemberTriangulation(f1,f2);
v=table2array(combinations(1:3,1:3)); f1=delaunay(v); v2=v+v(:,1); f2=delaunay(v2); ismemberTriangulation(f1,f2(:,[1,3,2]));

rng(1); f=delaunay(rand(9,2)); x=ismemberTriangulation(f,sortTriangulation(f)); assert(all(x==1));
rng(1); f=delaunay(rand(9,2)); x=ismemberTriangulation(f(:,[1,3,2]),sortTriangulation(f)); assert(all(x==-1));

TODO

• docs

See Also

sortTriangulation, isequalTriangulation, sortTriangulationFaces

Authors

Mehul Gajwani, Monash University, 2024